MIL-STD-808A(USAF)18 January 1983SUPERSEDINGMIL-STD-808(USAF) ,,22 December 1960
MILITARY STANDARD
FINISHES, MATERIALS AND PROCESSES FORCORROSION PREVENTION AND CONTROL IN
SUPPORT EQUIPMENT
AMSC No. F3231 AREA MFFP
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.’$IIL-STD-808A(IJSAF) ,,
,, .DEPARTM’ENT OF DEFENSE ,, ‘. ~~ ., 0“l.~ashington,D.C’. ‘?0301 .,
.“
Finishes, Materials and Processes
,,‘for Corrosion prevention and . .-’
Control in Support Eouipment, MIL-STn-808A(USAF). , : ,. ,,
1. This Military Standard is approved for use b,ythe Air Force” , ,Wright Aeronautical Laboratories, De~artment of the A~r Force!
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and is available for use by all .Departments and Aqencles, Of the., .’ , .:Department of Defense.
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2. Beneficial comments (recommendations, additions, delet~ons)and any pertinent data which may be of use in improving th~sdocument should be addressed to the Air Force Wright AeronauticalLaboratories, hlLSA,,Wright-Patterson Air Force Base, Ohio 45433byusing the self-addressed Standardization ‘Ocumentl mProvement “ ~Proposal (DD Form 1426) appearing at the end of this document or!iyletter.
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.0MIL-STD-808A(USAF)
FOREWORD
The purpose of this standard is to establish acceptable requirementsfor materials selection, materials processing, cleaning processes,finishing materials and finishing processes and techniques foreffective protection against corrosion for support equipment exclu-ding munitions and electronic equipment. This standard covers bothorganic and inorganic finishes. A finish code system is provided , -for identifying the selected finishon engineering drawings.
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.MIl_.sTD-808A(usAF)
‘“0CONTENTS
Paragraph .,’,,
SCOPE. . . ; . . ... . . . . . .....>,’Scope, . . . . . . . . . s “ . “ . “ “Exclusions .. . . . . . . . . . . . .
Classification . . : . . . . . . . . .Applicability. . . . . .S ‘ “ “-o “ “
I
1,
1
1.
2
2’24
5
55
5
5566,6667
7
77
778888899999
1.
1.1
1.21.3 :1,4,”
,,,,’,
,..2,
2.12.1.12.1.2
Government documehts . . . . . . . . .Specificationsand Standards . . 0 . “Other documents and publications . . .
DEFINITIONS. ’... . . . . SO .- . “’”3.
Abrasive blasted surfaces. . . . . . .Nhite metal surface finish . . . . . .Commercial blast metal surface
finish. . . .. . . . ... . . . . . .
3,13.,1.13.1.2
GENERAL REQUIREMENTS . . . . . : . .,. .Finishing processes.” . . . . . . .. . .~a~~~~~? ~“: . . . . . . . . . . . ... .Selection. . . . . . . . . ● . “ ~ . .Exceptions . . . . . . . . . . , . ..Parts fabrication. . . . . . . . . . .Holes and recesses”. . . . . . - . . .‘Masking. . . . . . . . . . ..... . . .
4.’,. ..
4.1A-
;:;4.44.54.64.7
DETAILED REQUIREMENTS. . . . . . . . . .5.
Materials and finish process consider-ations in design . . . . . . . . . .
Design considerations. . . . . . . . .General design guidelines for
corrosion prevention . . . . . . . .Exclusion of water . , . . . . . . . .Ventilation. .. . . . . . . . . . , . .Drai”nage. . , . . . . . . . . . . . .Dissimilar metals. . . . . . . . . . .Insulating materials . . . . . . . . .
5..1
5,1.15.1.2
5.1.2.15.1.2.25.1 .2.35.1 .2.45.1.2.55.1 .2.65.1 .2.75.1 .2.85,1 .2.95.1.2.105.1.2.11
Hinges.., .. .. . . . . . c ● . . . .Storage compartments . . . . . . . . .Battery areas . . . . . . . . . . . . .Exhaust systems. . . . . . . . . . . .Nonstandard ferrous hardware . . . . .Closed hollow members. . . . . . . . .
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eparaqra~h 5.2
5.2.15.2.25.2.2.15.2.2.25.2.2.35.35.3.15.3.25.3.2.15.3.2.25.3.2.2.15.3.2 .2.25.3.2.35.3.2.45.3.2.4.15.3.2.55.45.4.15.4.1.15.4.1.25.4.25.55.5.15.5.1.1
5.5.1.25.5.1.35.5.1.45.5.1 .4.15.5.25.5.2.15.5.2.25.5.2.35.5.35.5.3.15.5.3.2
5.6
5.6.15.6.25.75.7.15,7.2
MIL-STD-808A(USAF)
CONTENTS - Continued.
Documentation. . . . . . . . . . . . .Finish specification . . . . . . . . .Detailed drawings. . . . . . . . . . .Supplementary notes. . . . . . . . . .Manufacturers options. . , . . . . . .Multiple finish. . . . . . . . . . . .Cleaning requirements. . . . . . . . .Precleaning. . . . . . . . . . . . . ;Cleaning of surfaces . . . . . . . . .Aluminum and its alloys. . . . . . . .Low strength steels. . . . . . . . . .Abrasive blasting. . . . . . . . . . .Zinc surfaces . . . . . . . . ...”.Hiah strenath steels . . . . . . . . .Corrosion and heat resistina steels. .Passivation treatment. . . . . . . . .MiJgnesiumand its alloys . . . . . . .Surface treatments for metals. . . . .Aluminum and aluminum alloys . . . . .Electrical parts . . . . . . . . . . .Touch-up. . . . . . - . . . . .. “.Magnesium alloys . . . . . . . . . . .T-...---:..-A.+.ina.illur-yalllb buablllys . . . . ● . . . “ -
Metallic coatings application. . . . .Limitation on use of protectivemetal coatings . . . . . . . . . . .
Coating for corrosion control. . . . .Cadmium plating and coating. . . . . .Zinc plating and coating . . . . . . .Inorganic zinc rich primer . . . . . .Coatings for functional purposes . . .Chromium plating . . . . . . . . . . .Nickel plating . . . . . . . . . . . .Aluminum coating . . . . . . . . . . .Inorganic nonmetallic coating. . . . .Phosphate treatment. . . . . . . . . .Hard anodic coating for aluminum
surfaces and its alloys. . . . . . .Shot peening and other residual
compressive stress inducingtreatments. . . . . . . . . . . . .
Processing. . . . . . . . . . . . c .Plating finish selection . . . . . . .Organic coatings . . . . . . . . . . .Selection. . . . . . . . . . . . . . .Facilities and equipment . . . . . . .
v
Paqe
101011111111111112121212121313131313131414141414
1415’161616161616181818
18
181919191920
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Paragraph
.
5.7.2.15.7.2.25.7.2.35.7.35.7.3.15.7.3.2.5.7,3,35.7.3,45.7,.3.55.7.3.65.7.3.6.15.7.3,6.25.7.3.7
5.7.3.8
5.7.3.95.7.3.105;7.3.10.15.7,3.115.7.3.125.7.3.13
5.7.3.145.7.3.155.7,.45.7.4.15.7.4.2
5.7.4.35.7.4 .3.15.7.4.3.25,85.8.15.8.25.95.9.1-5.9.25.9.35.9.45,9.’55.9.6.5.105.10.15.10.25,115.11.15,11.25.11.3
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CONTENTS -Continued. ,. ~ ., . “’, “e,Page,.’
Facilivies . . ...”...-. . ...’”.’ 20 :’Environmental controls. . . . . . .’ . . .20 “Application equipment . . . ‘. . .’. . “ 20 ‘“ .“Organic coating application .-. .. . . 20Material. . . . . . . . . . . . . . . ‘.,’.20 :,Mixing. .... ... . . . . . . . ... .. . 20Selection of thinners . . . . . . . .. . 20, :Storage of paint materials.- ...1...,,. 21 ., ,Cleaning, general . . . . . ... . ... . 21..””Tests for surface condition . . . . . . 21 . .
Reaction of surface ; . . .. . .’- ; . 21,,
Water-break test. . . . . . . . . . . . 21Manually applied surface treatment
and touch-up. . . . . . . . . . . . ~ 22Aluminum and magnesium surface
treatments . ...+.... .,”:. 22Final preparation for painting. . . . . 22Special precautions . . . . . . . . . . 22 .General requirements. . . .’. . . . . . 22Production spray test panels. . . . . . 23,Final dry of the finish . . . . . . . . 23 .Application of subsequent coats to
previously painted surfaces . . . . ., 23Finish code selection . . . . . . . . .. 23 0Finish.selection. . . . . . .... . , . . 23Colors. . . . . . . . . . . . “ . . . .“23Color coding . . . . . ... .....” ,24Pipelines and compressed gas
cylinders. . . . . . . . . . . . . “ 24Authorized colors . . . . . . . . . . . 24’Exterior surfaces . . . . . . . . . . . 24Interior surfaces . . . . . . . . .. . 25Marking. . . ; . . . . . . : . .“ “ “ 26Reflectorized adhesive sheetln9 .“. . 0 26Stenciling. . . . . . . . . . . . . . . 26Other finishes . . . . . . . . . . ..”26Electrical components . . . . . . . . . 26 ,. ~~ ,,Open hollow members . . . . . . . . . . 27Closed hollow members . . . . . .. . . 27 ‘“Wood surfaces to be painted . . . . . . 27Nonmetallic surfaces. . . . . . . . . . 27Surfaces not requiring paint. . . . . . 27Environmental sealing . . . . . . . . . 27General requirements. . . . . . . . . . 27Detailed requirements . . . . . . . . . 27Fastener installation . . . . . . . . . 28Detailed requirements . . . . . . . . . 28Removable fasteners . . . . . “ .“. “ . 28Monel and stainless steel fasteners . . 28 0
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a’
Paragraph 6.
6.16.26.2.16.2.26.36.46.56.66.76,86.96.10
TABLE I.II.111.
IV.
v.VI.VII.VIII.
Ix.
MIL-STD-808A(USAF)
CONTENTS - Continued
INSPECTION. . . . . . . . .
Responsibility for inspect”
. . . . . . . . .
on. . . . . . . .General inspection requirements . .Tests. . . . . . . . . . . . . . .Test specimens. . . . . . . . . . .Condition of surfaceprior to paintContinuity and uniformity of coatin!
. . . . .
. . . . . .
. . . . .ng. . . .. . . . ,.
Thickness of coating, . .. . . . . . . . . .Paint application . . . . . . . . . . . . . .Paint adhesion. . . . . . . . . . . . . . . .Color. . . . . . . . . . . . . . . . . . . .Hiding power, gloss, and smoothness of paint,Data requirements . . . . . . . . . . . . . .
TABLES
Plating finishes (P). . . . . . . . . . . . .Paint finishes (Fand FF) . . . . . . . . . .Electrical conductivity of passivatedfinishes. . . . . . . . . . . , . . . . . .
Metallic coatings other than electroplated“m-- ItfilCchitllty> \l’i/. . . . . . . . . . . . . . . .
Final paint film - gloss. , . , . . . . . . .Final paint film - semi-gloss . . . . . . . .Final paint film - lusterless . . . . . . . .Finishes or process other than painting orplating(D). . . . . . . . .“. . . . . . . .
Finish selections . . . . . . . . . . . . . .
Pa e%=
28282829292929’.”2929292929
3133
46
5254
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MIL-STD-808A(USAF)
FINISHES,CORROSION
1. SCOPE
MILITARY STANDARD
MATERIALS AND PROCESSES FORPREVENTION AND CONTROL INSUPPORT EQUIPMENT
1.? Scope. This standard establishes minimum requirements for finishsystems for Air Force sumort eQuiDment and also establishes a codes~stem to”specify those finish systems in a simplified manner on draw-ings by Air Force engineering activities and in contractor generateddrawings as required by procurement officers.
1.2 Exclus~ons. Electronic equipment and munitions are excluded fromthe requirements of this standard.
1,3 Classification For application of finishes to support equipment,surfaces are classified as follows:
Type I (exposed) Type I surfaces are areas either ex~osed ~~d;rectly to the environment when equip-iiieniis in operating or travailing con-figuration, or areas not exposed directlyto the environment but subject to combineddirect action of environmental elements.Environmental elements include temperatureextremes, humidity extremes, rain, hail,snow, sleet, salt laden air, industrialatmospheres, direct solar radiation, dust,and the abrasive action of wind-blown sand.
Type II (sheltered) Type II surfaces are areas not exposeddirectly to the environment during equip-ment operation and traveling configurationand are not subjected to direct action ofrain, hail, snow, sleet, direct solar rad-iation, and wind-blown sand.
1.4 Applicability. This standard is applicable for use by all AirForce procuring activities and their respective contractors involved inthe design and procurement of support equipment. The detailed drawingsand detailed finish specification applies to all elements of supportequipment, including spares.
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FIIL-STD-808A(USAF),,
2. REFERENCED DOCUMENTS ~ , , .
2.1 Government documents. “ .
2.].1 Specificat.ionsandstandardi. Unless o~herwise specified,the following specifications and.standards of the issue listed inthat issue of the Department of Defense Index of Specificationsand Standards .(DoDISS) specified in the solicitation, form a partof this specification to the extent specified herein. “
SPECIFICATIONS
FEDERAL’
L-P-41O
.L-S-300O-A-51O-T-620 “
P-D-680’QQ-C-320QQ-N-290QQ-P-35’
QQ-P-416QQ-Z-.325
“ TT-C-490
TT-M-,261TT-N-95.TT-P-636TT-V-121
MILITARY
MIL-!I-3171MIL-C-54.1O
MIL-C-5541,,
MIL-S-85~2
MIL-A-8625MIL-S-8784
MIL-S-8802
MIL-C-8837MIL-H-9850DOD-D-I000MIL-C-10578
.’,,,,,
,.’ ,,,’. .,,, ‘.., ,’,,
Plastic, Polyamide (Nylon); Rigid, Rods, Tubes,Flats, Molded and Cast PartsSheeting and Tape,. Reflective, Nonexposed LenseAcetone, TechnicalTrichloroethane 1,1,1, Technical, Inhibited(Methyl Chloroform)Dry Cleaning Solvent ‘Chromium Plating (Electrodeposite@)Nickel Plating (Electrodeposited)Passivation Treatments for Corrosion-Resisting.SteelPlating; Cadmium (Electrodepoiited’),Zinc Coating,. Electrodepos”ited, Requirements. forCleaning Method and Pretreatment of Ferrous”Surfaces for Organic CoatingsMethyl Ethyl Ketone, Technical’Naptha, AliphaticPrimer Coating, Alkyd, Wood and Ferrous MetalVarnish, Spar, Water Resisting
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Magnesium Alloy, Processes for PretreatmentCleaning Compound, Aluminum Surface, Non-Flame-SustainingChemical Conversion Coatings on Aluminum andAluminum AI1OYS and Prevention of Corrosion onSupport Equipment, Aeronautical, Special, GeneralSpecifications for the Design ofAnodic Coatings, for Aluminumand Aluminum Alloys
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Sealing Compound, Aluminum Integral Fuel ‘Tanks andFuel Cell Cavities, Low Adhesion, Accelerator RequiredSealing Compound, Temperature Resistant, IntegralFuel Tanks and Fuel Cell Cavities, High AdhesionCoating, Cadmium (Vacuum Deposited)Hinge, Butt, Continuous, Piano (SUPP 1)Drawings, Engineering and Associated ListsCorrosion Removing and Metal Conditioning Compound
a
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MIL-STD-808A(USAF)
m
MIL-C-11796
MIL-W-13518
NIL-S-13165MIL-P-13924MIL-C-16173
DOD-P-16232
MIL-C-17711
MIL-C-23217‘MIL-C-23236
MIL-P-23377
MIL-C-25769MIL-C-26074MIL-P-26915MIL-P-27418MIL-S-38249MIL-C-38334
MIL-P-38336
MIL-M-43248MIL-C-43616MIL-M-45202MIL-R-46068MIL-T-81533MIL-C-81562MIL-&81706
MIL-S-81733MIL-C-81740
MIL-C-81751MIL-S-83286
MIL-S-83430
MIL-C-83488MIL-C-83982
STANDARDS
FEDERAL
FED-STD-141
Corrosion Preventive Compound, Petrolaturn, HotApplicationWood preservative, Tetrachlorophenol and penta-chlorophenol, Surface Sealing Compound ,.Shot Peening of Ferrous Metal PartsCoating, Oxide, Black for Ferrous MetalsCorrosion Preventive Compound,- Solvent Cut Back,Cold ApplicationsPhosphate Coatings, Heavy, Manganese or Zinc Base(for ferrous metals )Coatings, Chromate, for Zink A~loY castings and
-Hot-dip Galvanized SurfacesCoating, Aluminum, Vacuum Depositedpaint Coating Systems, Steel Ship Tank, Fuel andSalt Water BallastPrimer Coating, Epoxy Polyamide, Chemical andSolvent ResistantCleaning Compound, Aircraft Surface, Alkaline WaterbaseCoating, Electroless Nickel, Requirements for
‘, Primer Coating, Zinc Dust Pigmented, For Steel SurfacesPlating, Soft Nickel (Electrodeposi ted, Sulfamate Bath)Sealing Compound, FirewallCorrosion Removing Compound, Prepaint, for AircraftAluminum SurfacesPrimer Coating, Inorganic, Zinc Dust Pigmented, SelfCuring, for Steel SurfacesMat, Reinforcing Glass FiberCleaning Compound, Aircraft SurfaceMagnesium Alloy, Anodic Treatment ofResin, Polyester, Bisphenol - A Type1,1,1 Trichloroethane (Methyl Chloroform) StabilizedCoating, Cadmium and ,Zinc (Mechanically Deposited)Chemical Conversion Materials for Coating Aluminumand Aluminum AlloysSealing and Coating Compound, Corrosion InhibitiveCoatings, Aluminum and Aluminum Alloys (MetallicCompound Decomposition)Coating, Metallic CeramicCoating, Urethane, Aliphatic Isocyanate, for AerospaceApplicationsSealing Compound, Integral Fuel Tanks and Fuel CellCavities, Intermittent Use to 360 Degrees FCoating, Aluminum, ION Vapor DepositedCompound, Sealing, Fluid Resistant
Paint, Varnish, Lacquer and Related Materials,Methods of Inspection, Sampling and Testing
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MIL-STD-101 , Color Codes for Pipelines and for Compressed .Gas Cylinders ‘. “ ~~~~ “’
MI’L-STD-490 Specification Practices -MIL-STD-753 Corrosion Resistant Steel Parts, Sampling”” ‘;”
Inspection and Testing for Surface Preparation “ .MIL-STD-889 Dissimilar Metals
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MIL-STD-1504” Abrasive Blasting‘;;MIL-STD-1568
,,.Materials and Processes for Corrosion Pre- ,.,-,,,,
vention and Control in Aerospace Weapon Systems ‘
DEPARTMENT O’FTHE AIR FORCE
AFR 400-44 Corrosion Preventionand Control ProgramAFM 88-15 Air Force Design Manual - Criteria and Standards”
of Air Force ConstructionAFOSH STD 161-2 Industrial VentilationAFSC Design Handbook 2-6 Ground Equipment FacilitiesT:O. 42A-1-1 Safety, ,Fire Precaution and Health promoti~ri
Aspects of Painting, Doping and Paint Removal ~~.,T.O. 1-1-8 ‘Application of Organic Coatings, Aerospace. ., .,
Equipment
(Copies of specifications, standards, drawings, and publications “orequired by Manufacturers in connection with specific acquisition ,.
functions should be obtained from the procuring activity or as directed “ ,by the contracting officer. ),,
2.1.2 Other documents and publications,. The following other Government “-documents form a partof this standard to the extent specified herein. “
AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)
ASTM A 123 Zinc (Hot-galvanized) Coatings on Products “Fabricated from Rolled, Pressed, and ForgedSteel Shapes, Plates, Bars, and Strip
ASTM,A 525 General Requirements for Steel Sheet, ?inc- ‘Coated (Galvanized) by the Hot-Dip process -
ASTM F 519. Mechanical Hydrogen Embrittlement of Testingof Plating Processes and Aircraft MaintenanceChemicals
(Application for copies should be addressed to the American Society forTesting and Materials, 1916 Race Street, Philadelphia, PA 19103.)
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oMIL-STD-808A(USAF)
STEEL STRUCTURES PAINTING COUNCIL
SSPC-SP6-63, Edition 6 Steel Structures Painting Manual”;Volumes 1 and 2
(Applications for copies should be addressed to the Steel StructuresPainting Council, 4400 FifthAvenue, Pittsburg, PA 15123).
(Industry association specifications and standards are generallyavailable for reference from libraries. They are also distributedamong technical groups and using Federal Agencies).
2.1.3 Order of precedence. In the event of a conflict between thetext of this standard and the references cited herein, the text ofthis standard shall take precedence.
3. DEFINITIONS
3.1 Abrasive blasted metal surfaces.
3.1.1 White metal surface finish. A white metal surface finish isdefined as abrasive cleaning that removes all mill scale, rust scale,rust, adhering mill scale, casting sand, slag, weld spatter and otherforeign matter. The surface produced will have a very uniform greyishliietd~~icwhite co~~i’with ~ r~ughnej~ p}-Gfi~e c0iif0fiifi5tO the Sizeof abrasives used. This surface is required when organic and inorganiczinc rich primers and galvanizing is’applied to steel. See alsoMIL-STD-1504 on abrasive blasting.
3.1.2 Commercial blast metal surface finish. A commercial blastmetal surface finish is defined as abrasive cleaning which will leavethe surface clean and free of all adhering mill scale, corrosion pro-ducts, dirt, casting sand, slag and other foreign substances and pro-vide a dull grey slightly streaked surface. This surface finish issuitable for the application of organic coatings. See also MIL-STD-1504 on abrasive blasting.
4. GENERAL REQUIREMENTS
4.1 Finishing processes. The cleaning procedures, sealant materials,coating systems and other preservative materials covered by thisstandard will provide protection against corrosion and other effectsof the environment and service conditions providing the finishingsystems are properly planned, selected and applied during the designand manufacture of the support equipment. High performance finish
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MIL-STD-808A(USAF) ~ ‘, ~.,,
systems :are extremely critical of the surface ’to,whjch they are . “applied. !iofinish systemw’illadhere to corroded metals and “’ ~~,alloys or,improperly cleaned materials. Conse~uently”, jroperattention mustbe given to cleaning prior to applicationofany
finish. Also.of paramount importances the selection of compatiblefinishing systems in order to insure film adhesion and eliminatelifting, blistering and wrinkling. Good workma,nship’and strict ‘quality control of the mixing, application and curing of the finishsystem is mandatory in order to,obtain acceptable protective, coatingsystems. ,
.,, ,,.
4.2 Materials. All materials and.processes shall conform,to, the ,requirements of the applicable specifications and shall be used inaccordance with the governing documents.
4,3 Selection.” The responsibility for selection and approval ofall materials and processes lies .with the engineering activity havingengineering responsibility for the System or item. The engineeringresponsibility shall also include selection and approval of materials,,processes and finishes which are consistent. with approved corrosioncontrol practices and Air Force inventory standardization as,definedin AFR”400-44 and supplements thereto and MIL-STD-l,568i
4.4 Exceptions. Materials, processes and finishes not Iistedinthis standardmay be utilized where unique. functional requirementsexist.or when materials, processes and finis-hes:required by,thisstandard are not applicable. Some materials, processes and-finishesreferenced in this standard,arenot covered by either Governmentor Industry specifications. Information on the applicability andavailable sources forsuch materials, processes and finishes canbe obtained from the engineering activity responsible for the systemor item. Complete information on materials, processes, and finishesin the above cases shall be included on the applicable detaileddrawings and in the finish specification.
“ 4.5 Parts fabrication. Parts fabricated by means of lock seams,lap joints, tack welding, spot welding or other permanent fasteningtechniques shall be primer coated, plated or chemically treated ora combination of the treatments prior to the assembly operation, orthe design shall be such that,plating and otherchemical solutions ‘will drain from the part.
4.6 Holes and recesses. When it is not possible to meet thicknessrequirements for organic paint finishes or metallic finishes, sealantmaterials containing corrosion inhibitors shall be used. (See 5.11)
6
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MIL-STD-808A(USAF)
o .“
4.7 Masking, Plated or base metal parts containing areas specifi-tally intended for electrical contact or heat trattsmission ’shallhave such areas masked or otherwise protected during subsequent.finishing processes.
4.7.1 Items such as fabrics, plastics, rubber, working parts ofmachinery, and other surfaces not normally painted in good com-mercial practice, shall not be painted unless specified in theequipment specification. These items shall be masked or otherwiseprotected during subsequent finishing processes,
5. DETAIL REQUIREMENTS
5.1 Materials and finish process considerations in desiqn.
5.1.1 Design considerations. The primary consideration in thedesign and construction of support equipment is the abjlity of thedesign to comply with structural and operational requirements. In ,addition, the support equipment is expected to perform reliablyand require minimum maintenance over a specified lifetime, whichincludes minimizing the rate of deterioration. Therefore, in theselection of suitable materials and appropriate processing methodsto satisfy functional performance and structural requirements inaccordance with MIL-S-8512 and AFSC Design Handbook 2-6, considera-tion must also be given to those materidls, prucessiiigmethods aiidprotective treatments which reduce service failures due to deter-ioration of parts and assemblies in service. Deterioration modeswhich contribute to service failures include but are not limitedto pitting corrosion, galvanic corrosion, exfoliation corrosion,stress corrosion, corrosion fatigue, thermal embrittlement, frettingfatigue, oxidation, hydrogen embrittlement, weathering and fungusgrowth. In the entire design phase, attention shall be given toprecautionary measures to minimize deterioration of individualparts and assemblies as well as the entire system. Precautionarymeasures include proper selection of materials, limitations ofdesign operating stresses, relief of residual stress levels, shotpeening, heat treatments which reduce corrosion susceptibility andprotective coatings and finishes.
5.1.2 General desiqn guidelines for corrosion prevention.
5.1.2.1 Exclusion of water. The design of the system shall besuch as to prevent water leaking into, or being driven into, anypart of the system interior when either in an operating or travel-ling configuration. All windows, doors, panels, covers, etc., shallbe provided with sealing arrangements such that the entry of wateris minimized when these items are correctly closed. Particularcare shall be taken to prevent wetting of equipment, and heat andsound proofing materials. Sharp corners and recesses should be
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MIL-STD-808A’(USAF) ,,, .,,
avoided so that moisture and solid matter cannot accumulate to, “initiate localized attack. Sealed floors with.suitable drairiageshall be provided’ for storage compartments, enginecompartrnents, “’ ~~0,and other areas in the design that could collect.and retainwater.’,.
“5,1,2;2 Ventilation.,.
Ventilation shall be sufficient to prevent,, moisture retention’ and buildup. .,
.,,,. ,,
5.1.2.3 Drainage. Drain holes shallbeprovid,edto prevent collection:or entrapmentof water or other unwanted fluid in areas’where ex-elusion is impractical. . All designs shall include considerations,
for the prevention of water or fluid entrapment and insure that ‘.,drain,holes are.located to ef,fectmaxirnum drainage of acfurnulated,
,,
‘“fluids. The number and location of drain,holes shall be sufficient ‘ ,’.,
to permit drainage of all fluids when the unit is in a 10 degreeincline in any plane. The minimum size of the drain,holes shall be0.25 inch (6.35 mill imeters’ (mm).
5.1.2.4 Dissimilar metals. Use of dissimilar metal< as definedby MIL-STD-889, in contact shall be”limited to applications wheresimilar metals cannot be used due to peculiar design requirements.When it is necessary to use dissimilar metals in contact, the metalsshall “be protected against galvanic corrosion. Galvanic corrosioncan be minimized by interposition of a material which will reducethe overall electrochemical potential of the joint or by inter-position of an insulating or,corrosion inhibiting material such assealants, and organic coatings. “
o5.1.2.5 Insulating materials. When thermal oracoustical insulating ‘,materials are required, they,shall have either a permanent baked ‘“on water repellant bindersystern’ or s“uitabl,yprotected with sealantto prevent any moisture absorbed by the material from contactingthe metal structure. The metal towhich the insulation materialis attached shall have a complete finish system of primer and top-coat prior to application. After installation, all edges shall besealed with sealant material conforming to MIL-S-8~733.
5,1.2.6 Hinges. All hinges used on support equipment shall conformto MIL-H-9850 and Supplement 1 thereto. The appropriate militarystandard drawing shall be selected from Supplement 1 to MIL-H-9850with the following exceptions:
Aluminum alloyhinges, leaves and pins,’shall be used forattac~rnent to magnesium or aluminum alloys only (Material A). Seealso MIL-STD-889 on dissimilar metals.
b. Hinges that are attached to low carbon steel shall be eithercorrosion resisting steel, leaves and pins, and shall be mechatlically
fastened only (Material C) or low carbon steel leaves, (Material D),plated or galvanized in accordance with Table I and Table IV by the
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MIL-STD-808A(USAF)
hinge manufacturer after forming and other manufacturing opera-
0
tions have been completed. The hinge pins shall be wear resistantnylon conforming to L-P-410. The nylon pins shall be secured inthe hinge nodes with button head 5000 series aluminum fasteners orbutton head nylon fasteners.
c. The design of the selected hinge shall have sufficientclearance from the outer face of the knuckle to the cutout of theopposite leaf to prevent the removal of paint finishes when thehinge is rotated through the entire range of its pivotal movement.
5.1.2.7 Storage compartments. Storage compartments of supportequipment for hoses, ducts, tools, electrical cables, etc. ,shallbe protected from abrasion with’a pressure sensitive transparentadhesive backed polyurethane tape. The tape shall be applied oversurfaces that have the final protective coating system applied.
,, 5.1.2.8 Battery areas. Battery compartments not constructed ofleakproof and corrosion resistant materials consisting of MIL-R-46068 polyester resin and MIL-M-43248 glass fibers or equivalent,shall have the battery compartment and adjacent areas which aresubject to vapors and spills coated with a suitable polyurethanecasting resin.
5.1.2.9 Exhaust systems. All components of exhaustding mufflers, spark arrestors, resonators, pipes, c’
●stops, bolts, nuts, fasteners and specially designedconstructed of a suitable stainless steel alloy shal”
systems inciu-arnps,weathercomponents notre~uire the—
application .ofa finishing system. All exhaus~ systems and componentsconstructed of low carbon steel shall be coated on both sides witha’commercial grade aluminum coating or equivalent coating materialthat is suitable for high temperature application.
5.1.2.10 Nonstandard ferrous hardware. All ferrous (other thanstainless steels) hardware such as U-bolts, fasteners, etc., notconforming to MS, AN, NAS or ANA Standards shall be cadmium platedor zinc plated in accordance with
5.1.2.11 Closed hollow members.hers, except those that transportdrainage provisions at the lowestmembers, drain holes will be provmembers shall have drain holes inpermits. Otherwise, the drain ho-
Table I or Table IV.
All closed hollow structural mem-fluids or gasses, shall have waterpoint of the member. For horizontalded on the lower side. Verticalthe bottom end cap if the designes shall be located on the side
of the member at the lowest possible point. The drain holes shallbe a minimum of 6.35mm (0.25 inch) in diameter. Drain holes in ver-tical hollow members shall be closed with removable Wellnut plugsor equivalent devices. All drain holes in horizontal hollow membersshall be left open. The interior surfaces of vertical and horizontalhollow members shall be protected against corrosion in accordancewith Table 11.
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MIL-STD-808A(’USAF) “ , ,~~,.
5.2 Documentation. When required by the contractor pu’rchaseorder,“’thefollowing documents shall be furnished by the manufacturer to theprocuring agency for review and ’approval by theengineeringactivityhaving responsiblity, for a system or item. ~~ ,.
5.2.1 Finish process specification. The contractor shall prepare &finish process specification in compliance with MIL-STD-490 which ~~identifies the specific cleaninq Processes and finishes.to be used onthe various substrates of all p~rts, components and complete assembliesto protect them against corrosion in the environments to which theywill be exposed.’ After .thedocument has been approvedby the resPon- ‘sible Air Force engineeri ng.activity, the requirements contajned therein.shall be included in all applicable production drawings. The ‘finishprocess specification shall also include the following data.
a. Designation of a person or persons in the design, engineering,and manufacturing departments as focal points for corrosion control..,
b. Data justifying the contractor’s materials selection andfinish processes and materials selection criteria shall be presentedand any special testing requirement’s shall be identified to insureacceptable levels of protection against corrosion.
c, Any company materials and finish ’process specifications shallbe cross-referenced to any applicable Federal or Military specifications.
d. Any special considerations concerning system or item peculiarity,“nuclear effects, chemical warfare agent effects and environmentalconcerns shall be stated and defined.
e. Special ’finishes for special areas such as engine compartments,ecwiDment and tool storaqe compartments, battery compartments, surfacesexposed to high temperat~res, surfaces exposedlaminates and exterior markings.
f. Surfaces” not to be treated or coated.
9. Sealing requirements in the following
1. Environmental sealing.
2. Sealing for containment of fuel.
to engine exhaust gases,
areas:
3. Sealing for containment of electrolytes.
4. Firewall sealing.
5. Heat resistant sealing.
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6. Fay surface sealing. ‘o7. Permanent fastener sealing.
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MIL-STD-808A(USAF)
8. Drainage provisions.—
9. List of sealing materials and process specifications tobe used.
5,2,2 Detailed-drawings. The contractor shall furnish detailedengineering drawings of parts, components and assemblies that clearlyidentifies the specific types of finishes to be used on the equipment.The finish system shall be identified on the drawings by the finishcodes presented in this standard. All engineering drawings shall beprepared to Level 3 (Production) in compliance with DOD-D-1OOO.
5.2.2.1 Supplementary notes. When a specification offers options, ;supplementary notes on the drawing shall be required to complete theidentification of a finish.
5.2.2.2 Manufacturers options. If the finish of a part is to beoptional with the manufacturer, the basic code for a specification maybe specified. The amount of freedom a designer or manufacturer has toselect types, classes, etc.,however, is still governed by the finishspecification or the particular material specification.
5.2.2.3 Multiple finish. A drawing which must reflect more than onefinish or a partial finish, shall contain codes and notes to identify
a the finishes-with the appropriate areas or zones.
5.3 Cleaninq requirements.
5.3.1 Precleaning. Prior to subjecting materials to cleaning processesinvolving mechanical or chemical removal of metal, all surfs’ces sha?l becleaned free from preservative oils, cutting oils, greases, weldingfluxes, soldering fluxes, and other soils.
5.3.1.1 Organic contamination removal. Organic soils shall be removedby emulsion cleaning, alkaline cleaning, vapor decreasing or solventcleaning, whichever is more applicable to the nature of the soil to beremoved. The materials and processes used shall be completely characterizedand controlled to insure no corrosion effects. Vapor decreasing shall bedone with 1,1,1 trlchloroethane conforming to MIL-T-81533 or O-T-620. Thecondensate of each vapor decreasing unit shall be sampled weekly to determinethe pH. If an acid reaction is found, the use’of the installation shall bediscontinued until the acid condition is corrected and also available treatedparts examined for corrosion effects. If corrosion effects are noted, all parts
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MIL-STD-808A(USAF) ,’ ,,,, ,,
processed during, interval.of cleaning sha’11be 100 percent inspected.Materials used for hand cleaning shall leave no contaminating residuesor react with cleaning solvents. ‘.Solvents for hand cleaning shall bel,l,ltrichloroettianeconforming to MIL-T-81533 or O-T-620, aliphatic‘petroleums such as naptha conforming to TT-N-95, acetone conformin9 ‘.to O-A-51, methyl-ethyl-ketone conforming to TT-M-261, et~.’ solventsshall be wiped from thepart and shall not be allowed to dry on the ‘“.,:,part. , ,.,
5.3~1 .2 Flux removal . Soldering ;,wel,ding,and brazing.fluxes shall , “be completely removed: Ho,twater,,alcohbl, or dry cleanin9 solvent,sconforming to P-D-680, Type II, shall’be used, as may be appropriate for’the flux or by a method which will not attack metals it’contacts” MethY~.or wood alcohol (methanol) shall not be used for magnesium and its alloys.Acid or alkaline materials shall not be used. ,,
5.3.2’ Cleaning of surfaces.,,’
5.3.2.1’ Aluminum and its alloys. Aluminum and its alloys shall”be eitherchemically,or mechanically cleaned. The use of uninhibited alkalinematerials suc,h as sodium hydroxide solutjons, and of abrasives containingiron and its oxides, steel wool and wire, and copper alloy based wire,which may become embedded and accelerate corrosion of aluminum alloys‘shall not ,be used for cleaning. Materials conforming to MIL-C-5410,MIL-C-43616, or MIL-C-25769 shall be used for ch,emical cleanin9. Other “materials or methodsma.y be approved for use..
5.3.2.2 Low-strength steels. Steels of Rockwell hardness less than C40shall be cleaned in accordance with TT-C-490 or by other suitable processes:
“.
5.3.2.2.1 Abrasive blasting. Machined parts and sheet.metal thinnerthanO .0625 inch (1$ gage U.S. standard) shall not be blasted. Blastingwill not be required on component parts of equipment (such as track chainassemblies, track roller assemblies, interiors of welded type box sections,blades, bowls, and buckets for dozers and crane shovels, interior of drumsofcement mixers, and interiors of aggregate driers) which are painted forprotection during Iimited. storage or from which the paint will be worn offalmost immediately when the equipment is ’placed in use. However, the sur-face to be painted shall be dry and free from loose mill scale, oil, grease,dirt and rust.
.,,5.3.2.2.2 Zinc surfaces. Electroplated’ zinc coated steel surfaces, hot-,dipped galv,anizedzinc coated steel surfaces, mechanically applied zinccoated surfaces and solid zinc surfaces shall be solvent vapor cleaned,solvent washed, alkaline detergent cleaned.or,a combination of alkalinedetergent and solvent cleaning. When aqueous alkaline detergent solutionsare used for cleaning zinc surfaces, they shall be immediately anpthoroughly rinsed with clean water.
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MIL-STD-808A(USAF)
o 5.3.2.3 tiiqhstrenqth steels. Steels, including corrosion andheat resistant steels, hardened .by thermal treatment or by coldworking to full or surface hardness level of Rockwell C40 and higher,shall be mechanically blasted for rust or scale removal.
5.3.2.4 Corrosion and heat resisting steels. Except as indicatedin 5.3.2.3, corrosion and heat resisting metals and alloys shallbe cleaned by suitable chemical or mechanical processes, or combin-ations thereof. However, materials which are susceptible to damageby hydrogen shall be mechanically cleaned. For metals and alloyswhich are sensitive to contamination by gaseous constituents suchas hydrogen, oxygen, and nitrogen, and are exposed to atmospherescontaining such materials during heat treatment, etc., sufficient
metal shall be removed during manufacture to eliminate the contain-. ,.inated material. Verification of elimination shall be done. Pro-cedures for and verification of complete removal of contaminatedmaterial shall be accomplished. Where chemical cleaning methods
.,
are used, the materials shall not result in any attack of the sur-face, either pitting or intergranular. Daily determination forthis behavior shall be made using a microscopic method with examinationat a magnification which will clearly establish the condition. How-ever, whenintermittent cleaning operations exist, the frequencyof examination shall be reduced accordingly but shall not be lessthan weekly intervals. Parts with pitted surfaces or showing inter-
0
granular attack shall be rejected.
5.3,2.4.1 Passivation treatment. The final operation for 200,300, 400 series and precipitation-hardened corrosion resistantsteels shall be a passivation treatment in accordance with QQ-P-35. -Carburized or nitrided surfaces shallnot be passivated. The”veri-fication of the surface passivation shall be in accordance with MIL-STD-753 for all parts.
5.3.2.5 Magnesium and its alloys. Magnesium and its alloys shallbe cleaned in accordance with MIL-M-3171.
5.3.2.6 Rinsing. When either acid or alkaline materials areemployed, the cleaned parts shall be given a thorough rinse withwater of adequate purity to remove all acid or alkali prior tofurther treatment and not leave any residual contamination.
5.4 Surface treatments for metals.
5.4.1 Aluminum and aluminum alloys. All aluminum and aluminumalloys ’including clad aluminum alloy surfaces used in load bearingstructural applications shall be anodized to produce coatings con-forming to type II of MIL-A-8625. All 7000 series aluminum alloysused in any application shall be anodized to produce coatings con-forming to type II of MIL-A-8625. All 2000 series aluminum alloys
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I1,
,-..
used in any application. shall be “anodized to produce ”coatin9s.con- -“ ‘“ “ ‘‘forming to type I or type II of MIL-A-8625. All 5000 and 6000 ‘,., ,,. ,*serjes aluminum-alloys may be anodized in ac.c~rdance’with tYPe I :.:,of MIL-A-8625 or may be chemical conversion coated in accordance ~~ “;
,,
with class 1A of,MIL-C-81706. Parts subject to ,wear, abrasion, ‘ ‘erosion, and severe corrosion conditions shall be anodized. ,“Chemical.conversion coated parts shall not @ used wh~.re:ubsequent”Organic ‘ , .finishing is not.specified.
,,,. ,,.. ,’ ,“,,.
5.4.1.1 Electrical parts.,,
Chemical films ’conforming~o Class 3 , , ,,,,treatment of MIL-C-81706 shall be used”onelectrical’p arts Where .,. ,.,, ,,,,,~~,’
low electrical resistance: is required. Table 11] gives electrical.’ , ,:conductivity properties of other conversion’coatings and ’surface ., ~~ ~passivation processes.
,, ,..
5.4.1.2 Touch-up. Unless otherwise specified, all surfaces whichhavethe anodic or cherhical conversion codings, removed or damaged’ ~shall be touched up only where, required with MIL-C-81706 materials
,,
approved for Class 1A treatment by Method B application (brush or .“swab). (See 5.7.3.7).
5.4.2 Magnesiumalloys. All magnesium alloys shall be surface ‘treated or.reteive an anodic coating in accordance with MIL-M-3171or MIL-M-45202. Anodic coatings applied in accordance wi,thMIL-M-. ~~45202 shallbe used for parts subject to wear, erosion, or abrasion.
5.4.2.1 Touch-up. All surface)s which have the anodic or chemical” , ~~film removed or damaged shall be touched up, :using eitherthe Type I ‘
“e
or Type VI process of MIL-M-3171.,,
5.5, Inorganic coatings. ,: ,,
5.5.1 ,Metallic coatings application. Metallic coatings shall be .applied by electrodeposition, vacuum deposition; mechanical deposi-tion, metallic compound deposition, or conventional spraying methodsin conformance to applicable specifications. Where thermal appli-cation processes are used, in no case shall the temperature of thepart be raised to adversely affect the mechanical, or corrosion andstress corrosion properties of the part and if the part is shot-peened prior to,coating, shall not impair the effectiveness of theshot-peening operation. ,.
5.5.1.1 Limitation on use of protective metallic coatings. Softsurface coatings such as cadmium, nickel-cadmium, and aluminum shallnot be used for sliding or wear applicat~ons. Cadmium plated sur-faces shall not be used in applications where surface temperatureexceeds 450°F (232°C). The use of chromium plating for corrosion
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MIL-STD-808A(USAF)
oprotection of alloy steel wear surfaces in interior environmentsis acceptable. For applications involving exposure to the exterior.environment chromium plating shall be considered an acceptablecorrosion protection of alloy steel wear surfaces only when the ,.
chrome plating. is periodically lubricated (fluid or grease typesonly) or a 0.04tnn (0.0015 inch) minimum layer of nickel plating isapplied under the chrome. All chrome plated steel parts used infatigue applications shall be shot peened prior to plating. Chromeplated surfaces shall n$t be u~ed in applications where servicetemperatures exceed 700 F (370 C). , ,“
5.5.1.2 Coatings for corrosion control. Non-corrosion resistant:steels shall be coated as follows:
a. With cadmium by vacuum deposition in accordance with MIL-C-8837 .
b. With aluminum by vacuumC-23217.
With cadmium or zinc bywith f%L-c-81562.
deposition in accordance with MIL-
mechanical deposition in accordance
With electrodeposited zinc conforming to QQ-Z-325 or e“depos!~ed cadmium conforming to QQ-p-416.
● With aluminum and aluminum alloys by metallic compounddepos~~ion in accordance with MIL-C-81740.
ectro-
f. With ion vapor deposited aluminum in accordance with MIL-C-83488.
9. With metallic-ceramic coating conforming to MIL-C-81751.
Steels heat treated to an ultimate tensile strength of 1230 megapa-$cals (mpa) (180,000 psi) or above shall not be coated with zinc.Electrodeposited cadmium may be used on high strength steel, 1230mpa (180,000 psi) Ultimate Tensile Strength (UTS), provided the pro-cess can be demonstrated by satisfactory behavior of specimens pre-pared and tested in accordance with ASTM F519 using Type 1A notchedround bars, stressed in tension, under constant load. Unless other-wise specified, to assure continuous control of the process to pre-vent detrimental hydrogen embrittlement during production, thesatisfactory behavior of specimens, prepared and tested in accordancewith ASTM F519, shall be made for each production lot of coated steelparts. If evidence of hydrogen embrittlement of specimens is shown,the use of the process shall be discontinued until the process con-ditions are corrected.
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1.
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5.5,1.3 Cadmium plating and coating..,Cbclrnium’’plating shall,be
in accordance with QQ-P-416. Cadmiunvcoatings shall “be in accordance. with MIL-C-8837,0r MI-L-C-81562.”’Unless otherwisespecified, cadmium’coating orplating shall be Class 2 thickness0.008mm (0.0003 inch). Cadmium plating and coating shall not be:use~’in the following application., .’
,,
a. Parts which may be in ’contac~ with hydraulic fl,uids, fuels,lubricating oil and other petroleum base products.
,-..!’,
b. Parts in frictionalbe a detrimental factor.
,.
‘c. In confined spaces,which give off corrosive and
d. Parts which will be
contact where gouging orbinding,.
in the presencedamaging vapors
subsequently so”
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of organic mater
dered.
my
als
5.5.1 .3.1 Parts which cannot be processed to completely removepre-plate and plating fluids shall be vacuum coated in accordance
.. .
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with MIL-C-8837 or mechanically coated in accordance with MIL-C-81562.
5.5.1 .3.2 Cadmium, plated or coated partsshall be supplementarychromate treated in accordance with MIL-C-17711”.
5.5.1.4 Zinc plating and coating. Zinc plating shall be in accor-dance with QQ-Z-325. Mechanically applied zinc coatings shall,bein.accordance with MIL-C-81562. Hot dipped galvanized ”coatings’forlow carbon structural steel such as beams, channels; etc. shall bein accordancewith ASTM A123. Hot dipped galvanized coatings forlow carbon steel sheet shall be in accordance with ASTM A525. Zincplating and mechanical lyapplfed zinc coatings shall be a minimumthickness ”of O.025mm (0.001 inch). Hot dip galvanized coating forlow carbon steel structural members shall be a minimum thicknessof 0.086rmn (0.0034 inch), Hot dip galvanized coating for low carbonsteel sheet shall be a minimum ofG90 in accordance with ASTM A525.
‘a,“
Zinc coating and plating shall not be used in the fol~owing applications.
with structural
where corrosion
Where the temperature of coated parts or surfaces they arein co~~actwith exceed 500% (260q).
b. Parts. in contact
c. Parts in contactwith normal functioning.
,.
fabric surfaces,
products might interfere
d. Grounding contacts where the increased electrical resistanceof zinc-plated surfaces would be objectionable.
Parts and assemblies constructed of steel heat treated toan ul~~mate tensile strength of 1230 mpa and above (180,000 psi).
*
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MIL-STD-808A(USAF)
●5.5.1 .4.1 Inorganic zinc rich primer. Inorganic zinc rich primershall be in accordance with NIL-P-38336 or MIL-P-23236 Type 1, Class3. The primer shall be applied only tb low strength stee~~ ~50 KSIY ,UTS or below, that has been abrasively blasted to a white metalcondition. Inorganic zinc rich primer shall be applied to a mini-mum dry film thickness of 0.090mm (0.0035 inch). The same limitations .apply to the use of inorganic zinc rich primer as specified for zincplating, mechanically applied zinc coating, and hot dip galvanized .coating in paragraph 5.5.1.4.
5.5.1 .4.2 Zinc plated surfaces, mechanically zinc coated ”surfaces,hot dip galvanize coated surfaces and inorganic zinc rich primercoated surfaces shall be chromate treated in accordance,with MIL-C-17711 prior to application of any organic coatings.
5.5.2 Coatings for functional purposes. Coatings for functionalpurposes shall be as specified in 5.5.2.1 through 5.5.2.3. Unlessotherwise specified, w}~ere the selected coating-does not provideprotection against corrosion for the basis metal and the coatedsurface or portion thereof is exposed to corrosive environment, anundercoat of 0,025rTimto 0.040mm (0.001 to 0.0016 inch) of nickel onsteel and zinc parts or an undercoat of 0.020nunto 0.0251’mn(0.0008to 0.001 inch) nickel on copper alloy parts in accordance with QQ-N-290 shall be used. The same restrictions that are applicable tosteel parts, coated by chemical or electrochemical deposition and
●having’ a tensile strength of 1230 ritpa(180,000 psi) and over, asstated in 5.5,1.2 shall be applicable to coatings for functionaluse except for chromium (see 5.5.2.1).
5.5.2.1 Chromium plating. Chromium plating shall be used for allsurfaces subject to wear or abrasion, except where other surfacehardening processes are used such as nitriding, carburizing orwhere other wear and abrasion resistant coatings are specified.Chromium plating shall be in accordance with QQ-C-320, Class 2(engineering) with a minimum of 0.050nvn (0.002 inch). When chrom- “ium plating is specified, it shall be used on only one of two con-tacting surfaces.
5.5.2.2 Nickel plating. Nickel plating shall be used for the fol-lowing applications only:
(a) Where temperatures do not exceed 1000OF (530%) and othercoatings would not be suitable.
(b) To minimize the effects of crevice corrosion with unplatedcorrosion-resisting steel or stainless steel in contact with otherstainless steel.
17
(c) As an undercoat for other functional coatings.
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,. HIL-STD-808A(USAF) , .,
(d) TO restore “dimensions‘by buildinguP worn’.surfa~?s” ‘“
(e) ,Fo,rresistance to sanderosion. : ~~ ., ~~ ~~,“. .’,.
Where’nickel plating of parts or surfaces”is ~Pecif”ie~~”it shall be’ .such as to produce coatings in accordancewith QQ-N-290.’ Nickel ‘,plating”, except where used as an underplating, shall be Class 2,(engineering) with a.minimum thickness of 0.076MT( 0.003 inch)”
“.5.5.2.2.1 Where applications require low residual tensile stress’in’th.e.plated nickel,plating shall,be inaccordance with,MIL-P-27418.
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5.5.2.2.2 Electroless nickel coatinq. Where specified, electrolessnickel coating shall be in accordance with MIL-C-26074.
5.5.2.3 Aluminum coatinq. Aluminum and aluminum alloy coatingsshall be used’where the properties of these materials present dis- .tinct’protective advantages in comparison with.o her coatings and
iplatings at”temperatures in excess of 450% (232 ) surface .treat-ment of aluminum. and aluminum alloy coatings, when required> s,hallbe as specified herein (see 5.3). Aluminum and aluminum alloy coat-ings shall be in accordance with,MIL-C-81740, MIL-C-232170r MIL-C-83488. ,.,,
‘1------5.5.3 -----J..71:.JlwIyailiCIiulmwbatIIL CG~tifi~S.
5.5.3.1. Phosphate treatments. Phosphate treatments may be usedonsteel surfaces where it is impractical to apply metallic coating.Phosphate treatments, that conform to DoD-P-16232 or TT-C-490; shabe used.
5.5.3.2 Hard anodic coatings for aluminum and its alloys. Hard.anodic coatings shall conform to Type 111 of MIL-A-8625, They sha”be used on parts where the functional purpose is to provide a wearresistant surface. Hard anodic coatinqs shall notbe usedon partswhere subject to rework and
5.6 Shot peening and othertreatments. Shot peen,ing, “compressive stress-inducing
fatigue behavior and stresscontrolled procedur~s. T~eshall not exceed 50 F,(10 Cthe stressed surface of the
1
1
to overhauling.
residual compressive stress-inducingn accordance with,MIL-S-13165, and othertreatments’rnay be used to obtain improvedcorrosion cracking resistance, usingmaximum temperatures for use of any partless than the recovery temperature of
material ~nvolved. Procedure detailsshall be prepared and listed on the applicable drawings or applicablereference ~ocuments for parts. Specific attention shall be paid touse of recognized procedures, equipment, materials, and control methods.
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MIL-STD-808A(USAF)
●5.6.1 Processing. Steel parts plated with hard coatings, such asnickel and chromium and combinations thereof, shall be processedas follows:
5.6.1.1 Plated parts below Rockwell C40 hardness and subject tostatic loads or designed for limited life under dynamic loads, orcombinations thereof, need not be shot peened prior to plating orbaked after plating.
5.6.1.2 Plated parts below Rockwell C40 hardness which are designedfor unlimited life under dynamic loads shall be shot peened in ac-cordance with MIL-S-13165 priorto plating. Unless otherwise speci-fied, the shot peening shall be accomplished on all surfaces forwhich the coating is required and on all immediately adjacent sur-faces when they contain notches, fillets, or other abrupt changes ofsection size where stresses will be concentrated.
5.6.1.3 Plated parts which have a hardness of Rockwell C40, orabove, and are subject to static loads or designed forunder dynamic loads, or combinations thereof, shall be3750 + 250F (191°C ~4°C) for not less than 3 hours, w“or as soon as practicable after plating.
5.6.1.4 Plated uarts which have a hardness of Rockwel
limited lifebaked atthin 4 hours
C40, orabove, and are designed for unlimited life under dynamic loads,
●shall be shot peened in accordance with MIL-S-13165 prior to plating.Unless otherwise specified, the shot peening shall be accomplishedon all surfaces for which the coating is required and on all imme-diately adjacent surfaces when they contain notches, fillets, orother abrupt changes of section size where stresses will be concen-trated.. The plated parts shall be baked at 375° + 25°F (191° + 4°C)for a minimum of 3 hours within 4 hours or as soo~as practica~leafter plating.
5.6,2 Platinq finish selection. Plating finishes for applicationto ecwipment or Darts thereof shall be in accordance with Table I.Specific finishes shall be selected with due regard to surface class-ification (type 1 or II) and the base metal to be protected. Platingfinishes are designated by the letter “P” followed by a number. ThusP-102 is a plated nickel finish for use on iron or iron-base alloyparts to be subjected to type I exposure, As specified in Table Ifinish .P-102 consists of O.O1OMM (0.0004 inch) (minimum) nickel over0.019nrn (0.00075 mil minimum) copper undercoat over the base metal.Other metallic coatings shall be selected in accordance with Table IV.
5.7 Organic coatings.
5.7.1 Selection. The selection of organic coatings shall be in
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MIL-STD-808A(USAF)
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accordance with this standard and as otherwi se.di~ectedby the . , ,.contract or purchase order. .0,,
5.7.2 Facilities and equipment for organic coatings application.,.
5.7.2.1 Facilities. The facilities in which organic coatings areapplied to support equipment,- including complete assemblies, subassembliesand parts, “shallmeet the ventilation’ requirements of AFOSH Standard ‘ ‘161-2, the fire protection standardsof the National Fire pro- ‘tection Association (NFF’A)and AFM 88-15 and the general”safetyprecautions ofT~O. 42A-~’-l. The engineering activityis responsible. .,, ,: ~for approval of organic coatings application facilities. ,,
5.7.2.2 Environmental controls. All organic coating materials shallbe applied at environmental conditions (temperature and humidity) inaccordance with T.O. 1-1-8, Application of Organic coatings.
5.7.2.3 Applicationequipment. Application eqyi’pment shall be’eitherconventional air atomization, airless spray or airless electrostaticsspray equipment. The spray equipment, the air supply and the’spray“booths shall be.maintained in accordance with T.O., 1-1-83 Application OfOrganic, Coatings.
5.7.3 Organic coatings application. ‘,,, ,.
~.~:~.~Mii’t~i-iFil. Unless 6thertitsiespecified, 511 niaterials”iisediii 0the finishing and coating,of support equipment and parts shall conform ,
to the requirements of the applicable specifications, and as specifiedherein. The’addition,to the paints of any materials other thanthinners is prohibited. Contractors shall conduct such check testsas necessary to ensure suitability of the materials.
.5.7.3.2 Mixing. Finishing materials shall be prepared for applicationunder clean conditions with clean ecwii)ment. Coatirvamaterials shallbe allowed to equalize to standard conditions before-mixing. The materialsshall be thoroughly stirred or shaken prior to thinning ,ormixing andapplication. Mixing shall be controlled by weight, volume, orviscosity to ensure complete uniformity of all material prepared foruse. The mixing of paints of the same specification but suppliedby different manufacturers is prohibited to avoid problems ofincompatibility in the liquid and drying phases. Every effort shouldbe madeto assure that a primer of a single manufacturer is employed ,on the item to be finished and similarly, the topcoat should berestricted to a product of a single manufacturer,
5.7.3.3 Selection of thinners. The thinner required in the applicableprocess specifications shall be used. Adjust the amount of thinner,as necessary, to obtain the prescribed thickness of coating, but avoidexcessive thinning which could produce runs and sags. Temperature andhumidity conditions should be determined and thinning adjusted asrequired by the applicable specification, for such atmospheric conditions. oOther thinners as recommended by the paint manufacturer for his particularproduct may be used.
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I’lIL-STD-808A(USAF)
5.7.3.4 Storage of paint materials. Support equipment finishing
@
materials shall be stored in a cool, dry place, indoors if possible,and should notobe stgr~d at a temperature lower than 500F (lo%) orhigher than 80 F (27 C) for long periods and may approach, but shouldnot exceed, 100% (38%) for shorter periods not exceeding 4 months.Where high temperatures are unavoidable, the quantity on hand shallbe held to a minimum, since temperatures exceeding 100% (38%) willproduce marked degradation of certain of these materials.
5.7.3.5 Cleaninq, general. The meticulous cleaning and surfacetreatment of support equipment prior to all painting operationscannot be overemphasized, since this factor is of prime importancein obtaining a satisfactory paint finish. Reclaimed paint thinneror other reclaimed thinners shall not be Used’for cleanin9 purPoses>since these materials may leave soils which will cause poor adhesionof the next coat. All abrasive or foreign particles must be removedafter sanding or cutting operations before application of paint-typematerials. Cleaning shall be accomplished with solvents, detergents,and processes which have no deleterious effect on the surface and whichproduce surfaces satisfactory for receiving subsequent finishes.Cleaning materials which may be effective against one type of contam-inant may be ineffective against others. Therefore, multiple cleaningprocedures may be required to provide the required water-break-freesurface. -Acid cleaners or surface treatments shall not be allowed tocontact materials susceptible to hydrogen embrittlement. (See 5.3)
5,7.3.6 Tests for surface condition. The following tests shall beconducted on the support equipment before surface retreatment and painting.
5.7.3.6.1 Reaction of surface. The surface shall have a neutral orslightly acid reaction. Red litmus paper moistened with distilled waterwhen applied to the surface shall not turn blue, otherwise a 0.20 to0.25 percent chromic acid solution shall be applied and shall be permittedto remain on the surface for 2 to 5 minutes followed by a water rinse,and the Surface then wiped dry with clean, lint-free cloths. Thesurface shall then be retested with red litmus paper.
O
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5.7.3,6.2 Water-break test. Representative areas of the surface to betreated shall be tested for ability to support an unbroken film of“distilled water. A mist of distilled water shall be atomized on thesurface under test, representative of the larger surface being tested,employing any convenient small atomizing device. If the water gathersinto discrete droplets within 25 seconds, in other words, if the surfaceshows a “water-break” within that time, then the surface shall beconsidered as having failed the test. If the water forms a continuousfilm by flashing out suddenly over a large area, then this shall be con-sidered indicative of the presence of an impurity on the surface,such as free alkali, residual detergent, etc., and the surface shallbe considered as also having failed the test. If the water dropletscoalesce into a continuous film of water without a sudden flashout andform a lens, then the surface shall be considered as having satisfac-torily passed the water-break test.
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5.7.3.7 ,Manuallyapplied surface treatment and touchup. For suppo~t “’,,
equipment already assembled, manually applied surface retrea~~nt isrequired on all surfaces before’pai,nting. For aluminum surfaces;. “ aMIL-C-81706’manuallyapplied surface ’retreatmeritis ’required. For :magnesium surfaces ,retreatinentfljsrequired. For magnesium surfaces,MIL-M-3171,Type VI, or other approved eqqivalent,manuallyapplied ~~surface treatment is required. For other metals, :the contractor s$alldetermine the necessary treatment to assure adequate paint a~hesion.Manually applied,surface retreatment shall.be applied after final cleaning’ :and draining of the surface preferably within 8 hours but not more than72 hours prior toapplication of the fi,ni’sh.Special precaution shall “ ~~be’taken where treated magnesium surfaces are scratched., Such scratched ,’areas inadequately-surface treated shall be ‘carefully touched Up’’with ‘ :MIL-M-3171 manuallyapplied chemical treatment, .or approved equivalent,prior to coating application, otherwise bubbling would be encounteredwhen coatings are applied to-these surfaces. (See 5.4.1.2,and 5.4.2 .1.)
5.7.3.8 Aluminum and magnesium surfaces shall reexamined to determinethat the optimum thickness of surface treatment has been applied. ~ ~Paint will not bond to treated aluminum surfaces which are too dark, norwill it adhere to the brown powdery,surface of excessively treatedmagnesiuti or aluminum.
5.7.3.9 Final preparation for painting. After application, anddrying, of the surface retreatment the surface shall be flushed with, ‘cl’earwater and tested in accorciance with 5.7.3,.6, If additionalcleaning is<necessary, it shall be done in such inanner,that t.hesurface’treatment will not be”damaged.
5.7.3.10 Special precautions. Paintings hould “begin irmnediatelyaftercleaning to ensure application to a water-break free surface. Solventcleaning of ‘thesurface. is a requlriment if there is a breakin thepainting sequence on the support equipment ofovernight,’or longer.Additional cleaning consisting of at least an additional wash withsolvent followed by a wash with detergent solution in hotwater orsteam will usually be required. A final hand wipedown shall be per-formed irrtnediatelybefore painting the support equipment to ensurescrupulous cleanliness and a proper paintable surface. All surfacesshall be thoroughly dry before receiving paint-type materials, takingspecial precautions to assure dryness of crevices, faying,surfaces, anddifficulty accessible areas.
5.7.3.10.1 General requirements. Surfaces shall be conditioned tostandard temperature before painting. Unless otherwise specifiedherein or in the detail process specifications, paint-type protectivecoatings may be applied by spraying processes or any other approvedmethod which will “ensure the application of a smooth, continuous filmthat is free of imperfections, such as dried overspray, runs, sags,blisters, ”or orange peel.
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MIL-STD-808A(USAF)
5.7.3.11 Production spray test panels.
a
Prior to the spraying operation, ‘ “the suitability of materials for the entire system shall be determined . .experimentally on test panels. The panels shallbe coated underprevailing conditions with the finish system that is to be’applied .“ ;to the support equipment. If the finish system applied to theexperimental panel is satisfactory, then full scale operation may begin.Defects found in the experimental app~ications such as b~ushing~ poor .adhesion, excessive orange peel, sagging, etc., shall be correctedprior to large scale application.
5.7.3.12 Final dry of the finish. The support equipment, afterpainting, shall be permitted to dry in a dust-free ’atmosphere for asufficient time prior to moving the equipment, to insure that the paint
.,
is adequately dry and to avoid damage to the finish. Painted supportequipment or parts shall also be protected from condensing moistureand rain during the first 22 hours after painting, This time may varysomewhat depending on the temperature and type of paint used. Theengines of the painted support equipment shall not be operated forat least 48 hours after painting.
5.7.3.13 Application of subsequent coats to previously painted surfaces.Assemblies and subassemblies that have been previously painted shall becleaned prior to further application of paint. A cleaning agent thatwill not adversely affect the existing paint and provide a surface thatwill be satisfactory for furthur application of paint shall be used.
a
Upon evaporation of the cleaning agent, all S071S shall have beenremoved. Care shall be exercised to remove all cleaning agent fromcrevices and recesses.
5.7.3.14. Finish code selection. Paint finishes for application toequipmentor parts shall be in accordance with tables 11, V, VI and VII.Table II specifies basic paint finishes by F numbers. A basic paintfinish is a system involving steps 1 through 3 of table II and lacksonly the final film, step 4 of table II, for a complete finish desig-nation. Table 11 also specifies finishes by FF numbers, these are corn-plete finishing systems. Tables V, VI and VII provide the final filmcolor requirements by letter designation. Thus a semi- loss green
?system for ferrous alloys is specified as F-1OCES, F-10 ES, F-102ES, orF-103ES. In this case F-100, F-101, F-102, and F-103 are the basic greenpaint finish numbers and ES is the color designation (No. 24052conforming to FED-STD-595). Either the basic designation orthe final film designation may be specified independently. Forexample, detail drawings may specify a F-1OO paint finish, in which case,the assembly drawing would call for a final film, such as film AG., Twocoats of final paint are required for type I or 11 exposure unlessnoted in table 11.
5.7.3.15 Finish selection. Complete finishes applied to equipmentshall be one specified in table I, 11, or VIII. Insofar as possible,selection of finishes for any particular application may be made inaccordance with table IX.
5.7.4 Colors. Unless otherwise specified all colors shall be inaccordance with FED-STD-595.
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,’.5,7.4.l” Color codirq.,
,.. ,.The following color coding,of ‘support, ~~,.
equipment shall be utilized. ,.’ , ;,‘, .,, ,.,
a‘. ,Red’ “,-
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b, Yellow -
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“c~ ‘Green -
Fire protection” equipment such’as fire ‘extinguishers, barricades; danger ”and ,’ .“: ,,stop,signs. : ‘“’ ‘,, ,, ... , ,.,
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Physical hazard ,’that might cause t[iPpin9 ~ “’ ~~stumbling, etc., obstacles, Caut’ionsigns~etc. . ,’”” , ,,
,., ,,,,, ,,,..‘Safetyandfirstaid’”e quipment,f.irst-aidboxes (agreen cross on white background) ~~ “stretchers, etc.
d. Orange - High voltage-areas, interior of switchesand fuse boxes.
e. Blue - Covered electrical outlets, fuse box exteriors :or as otherwise specified.
.f. Black, ,- Paint large stationary machinery a inedium ,white dark,gray, use black and white for direction :and : signs.
:gray ,,
9“ Yellow - Fuel cell repair equiptient. ‘. .with .,’,black ~ :sidebands
5.7.4.2 ‘Pipelinesand compressed gas cylinders. Pipelines and corn-pressed gas .cylindersshall be color coded in accordance withMIL-STD-101 (see table 11/FF-904).
5,7.4.3 Authorized colors.
5.7.4.3.1 Exterior surfaces. Unless otherwise specified by theprocuring activity, support equipment exterior surfaces shall be ,,,finished in the following colors:
FED-STD-595Color Color Number Type of Equipment
Lime Green 13670 Crash rescue and fire-fighting vehicles, in-cluding fire marshallvehicles, assigned forfire protection.
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MIL-STD-808A(USAF)
Color
Yellow
Aircraft Gray
Insignia Red
Strata Blue
Insignia White
Black (Lusterless)
Green
FED-STD-595Number
13538
16473
11136
15045
17875
37038
24052
Equipment
Cargo handling vehiclessuch as fork lifts, trucks,tugs, tractors, and trailersoperated exclusively inwarehouse docks.
Hanger equipment ,,
Safety and protective equipment ~~(attached to aircraft on ground).
Vehicles (personnel carriers,multistop vans, etc).
Garbage and refuse collectiontrucks.
Sunglare protection. Nhenspecified, hoods on vehiclesto be used in areas where snowor sand terrain is prevalentmay be pdinted with lusterlessblack.
All”mobility coded vehicularequipment. -Flight-line equipment.
5.7.4.3.2 Interior surfaces. Unless otherwise specified by theprocuring activity, support equipment interior surfaces shall befinished in the following colors:
FED-STD-595Color Number Equipment
Insignia White 17875 a. Ambulanceb. Closed type vehicles
(1) Equipment van and’trailer interiors
Gray 36440 (a) Floors
Green 34670 (b) Walls
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FED-STD-595 ,’
Color Number“’ 0..
Equipment ‘ ~~
White 37886 ~ . (c) Ceilings : . ,’,..’..,,
(2), ‘Storage,cabinets ‘ “’” ‘,Green ‘” 24300 (a)Exteri,or ‘ .“,,: ‘,.,
Gray 26622.. “’ (b) Interior ,,,.
,,,. ,,(3) Equipment racks : , .:
Green, : 24300 (s) Exk~ior . : ‘ :., ,,,,,
Gray ,,,
26622 (b) Interior ~
(4) ConsolesGreen 24300 (a) Exterior
Gray 26622 (b) Interior
Gray ““ 36492 (c) Console”panels :,“
Black 37038 (d) Panel letteringand marking ~~
5.8 Markin~.,.
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:05.8.1’, Reflectorized adhesive sheeting. Unless otherwise specified, :flight l,ineequipment shall be marked with reflectorized adhesive ~~sheeting conforming. toL-S-300.
.,.5.8.2 Stencil ing.. When stenciling is required for marking of equip-ment, paint conforming to MIL-C-83286 shall be utilized as follows:
a. Luster”coded vehicular
b. Yellow
c. Insignsurfaces.
ess black, color 37038, on yellow, white, all mobilityequipment and flight line equipment.,
color 33538, on strata blue or gray.
a white, color 37875, on red, dark or olive $rab
5.9 Other finishes.
5.9.1 Electrical components. Electrical componentsotherwise governed by applicable specifications shal’
of equipment notbe treated and
painted as specified by,the contract or purchase order.
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MIL-STD-808A(USAF)
5,9.2 Open hollow members. The interior surfaces of all hollowand tubular steel, aluminum alloy, and magnesium alloy parts ormembers having open ends shall be coated in accordance with Table II.
5.9.3 Closed hollow members. The interior surfaces of all hollowsteel, aluminum alloy, and magnesium alloy parts or members havingclosed ends shall be protected by the application of a corrosion-preventive compound (see procedure listed for each metal in Table II).However, steel parts or members that are subsequently plated shall notbe treated. (See 5.1.2.11)
5.9.4 Wood surfaces to be painted. Wood surfaces.to be paintedshall be smooth, dry, and thoroughly cleaned of all dirt, grease,and other foreign substances.
5.9.5shal1other
5.9.6
Nonmetallic surfaces. All nonmetallic surfaces to be paintedbe smooth, dry, and thoroughly cleaned of all dirt’,grease andforeign substances.
Surfaces not requirinq paint. Fabrics, plastics, rubber,working parts of machinery, and other surfaces shall not be ~aintedunless-so specified in the ’equipment specification. Such items shallbe masked or protected during treatment and painting to prevent damage.
5.10 Environmental sealing.
5.10.1 General requirements. Environmental sealing is utilized toprovide protection from corrosion by excluding moisture and othercorrodants from joints. It is important that the areas to be coatedwith sealant be adequately cleaned before sealant is applied,
5.10.2 Detail requirements. All joints and seams located in exterioror interior corrosive environments, including equipment compartments,storage compartments, engine compartments, mating surfaces joined by
spot, projection, tack, or skip welding shall be faying surfacesealed with sealant conforming to MIL-S-81733, MIL-C-83982, MIL-S-8802 or MIL-S-83430. The MIL-S-81733 specification covers a sealantwhich contains a soluble chromate content of 3 to 6 percent for cor-rosion inhibition. For sealing high temperature areas, MIL-S-38249,firewall sealant, shall be used, The use of sealants not covered bya Military Specification must be approved by the procuring activity,Removable panels and access doors shall be sealed, either by mechanicalseals or separable fay surface sealant MIL-S-8784. High adhesionsealant such as MIL-S-8802 may also be used for access door sealingproviding a suitable parting agent is used on one surface. Matingsurfaces which are joined by mechanical fasteners shall be assembled—.wet with MIL-S-81733 sealan~,
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MIL-STD-808A(USAF) ,., ,,
5,11 Fastener installation.,’,, ,,,, ,.
5.11’.1 Detail requirements. All permanently installed fasteners(all fasteners not norm lly re oved for regularacce$s or servicing)used in areasup to107 $? (225 ) shall be wet install ed.with either .a corrosion inhibiting sealant conforming’ to MIL-S-81733 or anepoxy.Primer ~onform”ng to MIL-P-23377.
+In high temperature areas, ,exceed-
ing 107 C (225 ),’MIL-P-23377 epoxy primer, or a“sealant which is‘suitable for the thermal environment shall be used; “ ~~~
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5.11.2 Removable fasteners. Quick’ release fasteners ‘and removable ‘“fasteners penetrating exterior surfaces shall be desig”ned and in-stalled so as to provide a seal to prevent moisture,or fluids fromentering. Holes for these fasteners shal~ beprimed with MIL-P-23377’epoxy primer and allowed to dry prior to installing the fastener,
5.11.3 Monel and stainless steel fasteners. Plonelfasteners orstainless steel fasteners shall be coated with cadmium or aluminumwhen used in contact with aluminum components.
6. INSPECTION
6.1 Responsibility for inspection. Unless otherwise specified inthe contractor purchase order, the supplier is responsible for the ‘perfomiance of all inspection requirements as specified herein. ExceDtas otherwise specified in the contract or order, the supplier may usehis own or any other facilities suitable for the performance of”theinspection requirements specified herein, unless disapproved by theGovernment; The Government reserves the right to perform any of theinspections set forth in the specification where such inspections aredeemed necessary to assure supplies and services conform to prescribedrequirements.
6.2 General inspection requirements. Al,lequipment being processedshall be inspected at the various stages of cleaning, surface treating,painting, electroplating, and application of other types of finishes,coatings and sealants to ascertain that each process is done in strictaccordance with this standard and individual specifications. Theinspection’s and tests covered in this section .shall not be consideredrestrictive. Any condition not in full accord with the applicable ‘drawings and specifications shall be regarded as defective.
6.2,1 Tests. Materials, prior to their use, shall be inspected,sampled and tested, in accordance with the applicable specificationand standard to determine compliance with the requirements of theparticular specification.
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MIL-STD-808A(USAF)
a 6.2.2 Test specimens. When available, test specimens shall beactual production items, or parts of the items. When approved bythe contracting officer, coating systems may be tested on an approvednumber of test panels of the same metal and coated identically andconcurrently with the manufactured ”parts they represent.
6.3 Condition of surface prior to paintin~. All surfaces shall beexamined just prior to painting to assure that the previously cleanedand pretreated surface is dry and free from soil or contaminationof any kind. Poor adhesion of paint shall be construed as evidenceof improper cleaning. When poor adhesion is indicated, ,paint on theentire part shall be removed and the part repainted.
,.
6.4 Continuity and uniformity of coatinqs. All’coatings, inorganic, ,and organic shall be visually examined for continuity and uniformity.
6.5 Thickness of coatinqs. All coatings, inorganic and organic, shallbe checked for dry film thickness as required by this standard, theapplicable specification or drawing. The corre~t dry film thicknessof coatings is very important. Small steel panels prepared with films,too thick, too thin, and correct, may serve as visual color guides forprimers and top coats. Film thickness gages shall be used for other coatings.
6.6 Paint application. The temperature and humidity conditions shallbe checked during application of paint for conformance to this standard.(See ~.7.2.~)
6.7 Paint adhesion. The painted items, or specimen panels shall beexamined for adhesion in accordance with TT-C-490 or the coating specifi-cation, after the coated items or specimen panels have dried for aminimum of 24 hours for quick-drying systems, and for a minimum of 72hours for all other systems.
6.8 Color. The color of painted surfaces shall be checked against thestandard color chip representing the specified color in FED-STD-595 orother standard as furnished by the procuring activity. Color comparisonsshall be made using the applicable test method of FED-STD-141,
6.9 Hiding power, qloss, and smoothness of paint. The painted surfaces(when dry) shall be checked visually for hidinqness against samples (when available) furnishedprocuring activity.
power, gloss, and smooth-or approved by the
6.10 Data requirements. When this standard iswhich incorporat~a DD Form 1423, Contract Datathe data requirements identified below shall beby an approved Data Item Description (DD Form 1664) and delivered in
used in an acquisitionRequirements List (CDRL)developed as specified
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MIL-sTp-808A(usAF) “,,
accordance wi,ththe approved CDRL incorporated into:,thecontract.~~When the provisions of DAR 7-104.9 (n) (2) are invoked’andthe DD”Form 1423 is not used, the data specified below shall be deliveredby the contractor in accordance with the contractor purchase order
,’ requirements . Deliverable, data required by this standard are,asfollows: :
,,
Paragraph no. Data requirements Applicable DID no.
(a) 5.2,, ‘. Finish Process.Specification DI-E-3130,, ,,..
(b) 5.2.2 Engineering Drawing “ DI-E-7031,’
(Copies of DID’s required in connection ‘with specific acquisitionfunctions should be obtained from the Naval Publications and FormsCenter or as directed by the contracting officer.)
..
Custodian: Preparing activity:
Air Force - 20 Air Force - 20
Review activities: (project No. MFFP-F234)Air Force - 79,99, 14
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MIL-STD-808A(USAF)
TABLE I. Platinq finishes (P).
Finish Type Plate Minimum Plating ApplicableNumber Expo- Description Thickness in millimeters Specifications
sure Intermediate FinalP1ates Plates .r
FOR USE ON IRON OR IRON-BASE ALLOYS
P-100 I Heavy nickel 0.025’copper 0.025 nickel QQ-N-290, Class 1,Grade C (heavybright finish)QQ-N-290, Class 1,
P-102 I Nickel 0.019 copper 0.010 nickel Grade F (brjghtfinish)
QQ-N-290, Class 1,P-103 1“ Dull nickel 0.019 copper 0.010 nickel Grade F (matte
finish)Engineering
P-104 I nickel None 0.076 nickel QQ-N-290, Class 2
0.015 nickel 0.025 QQ-N-290, Class 1,P-106 I Bright chrome over 0.017 chromium Grade E plus QQ-C-
copper 320, Type I, Class 1
n mn -+,-bDl n nqkU,ulurlkbm& t “.”-” QQ-N-29(1:Class 1$
P-107 I Satin chrome over 0.019 chromium Grade F, QQ-C-320,copper Type 11, Class 1
EngineeringP-108 I chrome None 0.050 chrome QQ-C-320, class 2
Chromate treat- 0.013 QQ-P-416, Type II,P-114 I ed cadmium None chromium Class 1
(must be paint-ed)
P-115 I Olive-drab 0.013 QQ-P-416, type 11,chromate treat- None cadmium Class ?ed cadmium
Chromate treat- QQ-Z-325, Type 11,P-115 I ed zinc (must None 0.025 zinc Class 1
be painted)
Olive-drab QQ-Z-325, Type II,P-117 I chromate treat- None 0.025 zinc Class 1
ed zinc
QQ-N-290, Class 1,P-152 II Nickel 0.019 copper 0.010 nickel Grade F (bright
finish)
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~mber I Expo-
+
sure
-153’~1
-155 11
-161 11
TABLE 1,. “e‘Plating.finisheS (P). - Continued” ‘“ ,,’ ,., ,
, IPlate !linirnumPlating
Description Thickness in millimeters ‘Specifications ;r
Intermediate I ‘Final .,,
I PlatesI
Plates ,,. “
FOR “USE ON IRON OR lPO!’bAsE Ai-Loys,,,
QO-N-290, Class 1,
Dull nickel 0.019c00per 0.010 nickel Grade F (matte “finish)
0.010 nickel 0.025 QQ-N-290, Class 1,
Bright chrome over 0,019 chromium Grade F PIUS QQ-N-,. 302, T.Ype I or ~1)
Class i“
Chromate treat- None .“ 0.008 ~Q-D-416, Type II,
ed cadmium caclmiurn Class 2
(must be paint-ed) I I
SMALL FERROUS PARTS - BOLTS , SCREWS, NUTS, NASHERS s ETC~ ~ ‘XCEPTHIGH TENSILE BOLTS .
0.008 ; ,,QQ-P-416,Type II,
~-l70 11 $’ Cadmium None cadmium .Class 2
QQ-Z-325, Type II,
)-171 II Zinc None 0.005 zinc Class 3
9-102 I
P-103 I
IP-106 I
P-152 I 11I
FOR USE ON ALUMINUM ALL~yS .
Nickel
Dull n“
Bright
Nickel
ckel
chrome
1/See P-102 for details and Note –
1/’,See P-103 for details and Note–
1/See P-106 for details and Note –
7,
,.
See P-152 for details and Note ~{
11Prior to plating, all aluminum alloys require treatment to remove oxide films,All surfaces shall be given a suitable treatmentto insure good adhesion ofplates.
32 o
Downloaded from http://www.everyspec.com on 2009-02-25T5:20:18.
●“..
FOR
USE
ON
Ferr
ous
allo
ysot
her
than
stai
nles
sst
eel
(Tan
kcl
eani
ngan
dPr
etre
atme
ntis
prac
tica
l)
TABL
E11
.’Pa
int
fini
shes
(Fan
dFF
).
FINI
SHCO
DENU
MBER
F-1
OO
F-10
1
F-10
2
TYPE
EXPO
SURE
Ior
11
Ior
II
Ior
II
FINI
SHPR
OCES
SES
—
Afte
rcl
eani
ng,
cond
itio
ning
not
requ
ired
.;:
Pret
reat
with
aph
osph
ate
film
per
TT-C
-490
type
I.3.
Prim
ewi
thon
eco
atof
MIL-
P-23
377
0.01
5mm
to0.
023m
m(0
.6-0
.9ro
il)dr
yfi
lmth
ickn
ess.
4.Fi
nish
-Pa
int
with
comp
atib
lefi
nal
film
from
.ta
ble
V,VI
,or
VII
ofth
isst
anda
rd.
1.
Afte
rcl
eani
ng,
cond
itio
nby
abra
sive
blas
ting
inac
cord
ance
with
comm
erci
alpr
acti
cepe
rSt
eel
Stru
ctur
ePa
inti
ngCo
unci
lVo
l.2,
Sec.
”2,
No.
6(S
SPC-
SP6-
63)
and
MIL-
STD-
1504
.2.
Pret
reat
ment
not
requ
ired
.3.
Prim
ewi
thon
eco
atof
!41L
-P-2
6915
to0.
076m
mto
0.08
9mm
(3.0
to3.
5ro
il)dr
yfi
lmth
ickn
ess.
4.Fi
nish
-Pa
int
with
comp
atib
lefi
nish
film
from
tabl
eV,
VIor
VII
Of
this
stan
dard
.— 1.
Afte
rcl
eani
ng,
cond
itio
nby
abra
sive
blas
ting
inac
cord
ance
with
comm
erci
alpr
acti
cepe
rSteel
Stru
ctur
ePa
inti
ngCo
unci
lVo
l.2,
Sec.
2,No
.6
(SSP
C.SP
6-63
)an
dYI
L-ST
D-15
04.
2.Pr
etre
atme
ntno
tre
quir
ed.
3.Pr
ime
with
one
coat
ofMI
L-P-
3833
6or
MIL-
P-23
236
type
1,cl
ass
3to
0.08
9mm
to0.
l14m
m(3
.5to
4.5
roil
)dr
yfi
lmth
ickn
ess.
4.Ch
roma
teco
nver
sion
coat
the
appl
ied
prim
erwi
thma
teri
alco
nfor
ming
toMI
L-C-
1771
1.5.
Fini
sh-
Pain
twi
thco
mpat
ible
fini
shfi
lmfr
omta
ble
V,V
Ior
VII
ofth
isst
anda
rd,
—..
..
c b-l
D -n
Downloaded from http://www.everyspec.com on 2009-02-25T5:20:18.
..’.
.“.
w -s
—.
FOR
USE
ON
All
ferr
ous
allo
ys(T
ank
clea
ning
and
pret
reat
ment
isno
tpr
acti
cal)
TABL
EII
.Pa
int’
fini
shes
(Fan
dFF
).-
Cont
inue
d“
-“,,
FINI
SHCO
DENU
MBER
F-10
3
F-10
1
F-10
4
F-10
5
TYPE
EXPO
SURE
Ior
11
Ior
11
Ior
II
Io.
rII
...-
.—
——
——
..—
-...
.--”
..._
FINI
SHPR
OCES
SES”
,.
1.””
2. 3. -—
Afte
rcl
eani
ng,
cond
itio
nph
ysic
ally
by:a
bras
ive
blas
ting
orwi
thph
osph
oric
-aci
det
chpe
rMI
L-C-
1057
8.Pr
ime
with
one
coat
ofMI
L-P-
2337
7to
0.01
5mm
to0.
022m
m(0
,6to
0.9
roil
)dr
yfi
lmth
ickn
ess.
”Fi
nicf
i-
Pain
twi
thco
mpat
ible
fin
alfi
lmfr
omta
blt
V,V
I,or
VII
ofth
isst
anda
rd..
Forf
inis
hpr
oced
ure
see
F-10
1.:
1.‘A
fter
clea
ning
,co
ndit
ion
’phy
sica
lly
byab
rasi
vebl
asti
ngin
acco
rdan
cewi
thco
mmer
cial
prac
tice
per
Stee
lSt
ruct
ure
Pain
ting
Coun
cil,
Vol.
2,Se
c.2,
No6
(SSP
C-SP
-6-6
3)an
dMI
L-sT
D-J5
04.
‘~
2.Pr
ime
with
one.
coat
ofMI
L-P-
3833
6or
MIL-
P-23
236
type
1,cl
ass
3to
0.08
9nm.
to0.
l14m
m(-
4,0,to
4.5m
ildr
yfi
lmth
ickn
ess.
.~~
..3.
Chro
mate
conv
ersi
onco
atth
ea~
plje
dpr
imer
with
mate
rial
conf
ormi
ngto
MIL”
-C-1
7711
.~
.’”
4.Fi
nish
-Pa
int
with
comp
atib
lefj
nal”
film
”fio
mta
ble
V,VI
,or
VII
ofth
isst
anda
rd.
1.Af
ter
clea
n’in
g,co
ndit
ion
phys
ical
lyby
abra
sive
~bl
asti
ngin
acco
rdan
cewi
thc.
oinm
erti
ialprac
tice
per
Stee
lSt
ruct
ure
Pain
ting
Coun
cil
Vol.
.2,.Se
c.2,
No.
10(S
SPC-
SP-6
-63)
and
MIL-
STD-
1504
.~
2.Pr
etre
atme
ntno
tre
quir
ed.
‘.”‘“
-,
3.Pr
ime
with
one
coat
ofMI
L-P-
2691
5to
0.07
6mm
to”.
0.08
%nm
(3.0
to3.
5m.i
l)dr
yfi
lmth
ickn
ess.
“‘
4.Fi
nish
-Pa
int
with
comp
atib
lefi
nish
film
from
tabl
eV,
VI.o
rV
IIof
this
stan
dard
..
.,.
,.
0“-.
0~~‘
/... ,.
Downloaded from http://www.everyspec.com on 2009-02-25T5:20:18.
MIL-STD-808A(USAF)
o———. ——.-..— —. .— ——[
,,nEaE
otu#
Lcuk-c.@
00N
-o.K
.@. .L .
aJIn
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InaJ
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- 0-
.L
35
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FOR
USE
ON
Exte
rior
sur
face
sof
open
and
clos
edho
llow
memb
ers
(Fer
rous
allo
ys)
Ferr
ous
allo
ysu
rfac
esco
ated
with
the
foll
owin
gme
tall
icco
atin
qs.
a. b. c. d. e. f. ,9.
h.
Elec
trop
late
dzi
ncHo
tdi
pga
lvan
ize
Mech
anic
ally
de-
posi
ted
zinc
:El
ectr
opla
ted
cadm
iur
nVa
cuum
depo
site
dca
dmi’
inMe
chan
ical
lyap
-pl
ied
cadm
ium
Vacu
umde
posi
ted
alum
inum
Ion
vapo
rde
posi
-te
dal
umin
um”
TABL
EII
.Pa
int
fini
shes
(Fan
dFF
).“
-.C!
mtin
ued
FINI
SHCO
DENW
IBER
F-1
OO
F-10
1
F-10
2
F-10
3
F-10
4
F-10
5
F-.1
08”
‘TYP
EEX
POSU
RE
Ior
11
Ior
11
Ior
II
Ior
II
Ior
II
Ior
II
Ior
II
0.
FINI
sHPR
OCES
SES
For
fini
shpr
oced
ure
see
F-1
OO
—. For
fini
shpr
oced
ure
see
F-10
1.
For
fini
shpr
oced
ure
see
F-10
2‘
For
fini
shpr
oced
ure
see
F-10
3.
,,Fo
rfi
nish
proc
edur
ese
eF-
104
—.Fo
rfi
nish
proc
edur
e”se
eF-
105
‘.
1.Af
ter
clea
ning
,co
ndit
ioni
ngno
t’rg
quir
ed.
2.Pr
etre
atwi
thch
roma
teco
nver
sion
coat
ing
“con
-fo
rmin
gto
MIL-
C-17
711
ifno
tpr
evio
usly
chro
-ma
teco
nver
sion
coat
edin
acco
rdan
ce.w
ithth
ere
spec
tive
coat
ing
spec
ific
atio
n.~
3.Pr
inie
with
one
coat
ofMI
L-P-
2337
7to
0.01
5ivn
to“
0.02
2MM
(0.6
to0.
9mil
)dr
yfi
lmth
ickn
ess.
4.Fi
nish
-Pa
int
with
comp
atib
lefi
nal
film
from
tabl
eV,
VIor
VII
ofth
is,st
anda
rd.
.,
,,,..
”
.,,
●“
..
...
,. 0“’
Downloaded from http://www.everyspec.com on 2009-02-25T5:20:18.
TABL
E11
.Pa
int
fini
shes
(Fan
dFF
).-
Cont
inue
d
.1
FOR
USE
ONFI
NISH
CODE
TYPE
FINI
SHPR
OCES
SES
NUMB
EREX
POSU
RE.—
Ferr
ous
allo
ysu
rfac
es”
F-10
9Ior
11Af
ter
clea
ning
,no
cond
itio
ning
,pr
etre
atme
nt,
coat
edwi
thor
othe
rco
atin
gre
quir
ed.
elec
trop
late
dch
romi
um
Inte
rior
surf
aces
ofF-
11O
Ior
111.
Afte
rcl
eani
ng,
cond
itio
ning
not
requ
ried
.fe
rrou
sal
loy
open
2.Ch
roma
teco
nver
sion
coat
the
appl
ied
meta
l-ho
llow
memb
ers
coat
edli
cco
atin
gswi
thma
teri
alco
nfor
ming
towi
thth
efo
llow
ing
MIL-
C-17
711
ifno
tpr
evio
usly
chro
mate
non-
meta
llic
coat
ings
.ve
rsio
nco
ated
inac
cord
ance
with
the
re-
a.El
ectr
opla
ted
spec
tive
meta
llic
coat
ing
spec
ific
atio
n;zi
nc3.
Appl
yco
rros
ion
prev
enti
veco
mpou
ndco
nfor
-b,
Hot
dip
ming
togr
ade
Iof
MIL-
C-16
173
toin
teri
orga
lvan
ize
surf
aces
..
c.Me
chan
ical
lyde
-po
site
dzi
nc.
d.El
ectr
opla
ted
cadm
iur
ne.
Vacu
umde
posi
ted
cadm
ium
f.Me
chan
ical
lyap
-.1
plte
dca
dmiu
m!l
.Va
cuwn
de~o
site
dI
alum
inum
.h.
iIo
nva
por
de-
1po
site
dal
umin
umf i
Inte
rior
surf
aces
of!
F-11
1Ior
111.
Afte
rcl
eani
ng,
cond
itio
ning
not
requ
ired
.fe
rrou
sal
loy
clos
ed~
7.Ch
roma
teco
nver
sion
coat
the
appl
ied
meta
llic
holl
owme
mber
sco
ated
‘co
atin
qswi
thma
teri
alco
nfor
ming
toMI
L-C-
with
the
foll
owin
g17
711
ifno
tpr
evio
usly
chro
mate
conv
ersi
onme
tall
icco
atin
gs:
coat
edin
acco
rdan
cewi
thth
ere
spec
tive
me-
a.El
ectr
opla
ted
zinc
.ta
llic
coat
ings
spec
ific
atio
n.b.
Hot
dip
galv
aniz
e
k 4 w & o m > - c m D -1
Downloaded from http://www.everyspec.com on 2009-02-25T5:20:18.
w w
-——
~—
—.-
.
FOR
USE
ON
-
Inte
rior
surf
aces
of,f
erro
usal
loy
(Con
t.)
c.Me
chan
ical
lyde
-po
site
dzi
ncd.
Elec
trop
late
dca
dmiur
ne.
Vacu
umde
posi
ted
cadm
iur
nf.
Mech
anic
ally
ap-
plie
dca
dmiu
m
TABL
EII
.Pa
int
fini
shes
(Fan
dFF
).-
Cont
inue
d
!J.
Vacu
umde
pos
alum
inum
h.Io
nva
por
de.
posi
ted
alum
ted
num
—
Exte
rior
surf
aces
offe
rrou
sal
loy
open
and
clos
edho
llow
memb
ers
coat
edwi
thth
efo
llow
inme
tall
icco
atin
gs:
a.El
ectr
opla
ted
zinc
b.Ho
tdi
pga
lvan
ize
c.Me
chan
ical
lyde
po-
site
dzi
nc
FINI
SHCO
DENU
MBER
F-il
l
....
...
F-1.
12
TYPE
EXPO
SURE
—.
.—
1or
II
-—--
1or
11”
—
.-..
——
....—
.——
.
FINI
SHPR
OCES
SES
““-
3.Af
ter
clos
ure,
exce
ptth
ose
holl
ow’~e
mber
sth
attr
ansp
ort
gass
esor
flui
ds,
appl
yMI
L-C-
1179
6,cl
ass’
1or
MIL-
C-16
1.73
,gr
ade
1co
rros
ion
prev
enti
veco
mpou
ndto
inte
rior
.su
rfac
es.
Appl
icat
ion
ofth
eco
mpou
ndto
the
inte
rior
surf
aces
ofve
rtic
alan
dho
ri-
-zo
ntal
clos
edho
llow
memb
ers,
exce
ptth
ose
holl
owme
mber
swh
ich
tran
spor
tga
sses
or,
flui
ds,
may
bedo
neth
roug
hpe
rman
ent
drai
nho
les
orho
les
that
have
been
dril
led
spec
ifi-
call
yfo
rap
plic
atio
n.o
fth
eco
rros
ion
pre-
.:vg
ntiv
eco
mpou
nd.
The
hole
ssh
all
besp
aced
~to
perm
itco
mple
teco
vera
ge-o
fth
eir
iter
nal
surf
aces
and
cons
eque
ntdr
aina
geof
.the
exce
ssco
atin
gma
teri
al.
All
hole
sth
atwe
redr
ille
d~~ex
pres
sly
for
appl
icat
ion
”oft
heco
rros
ion.
“.,
prev
enti
veco
mpou
ndsh
all
be,’
clos
,edwit
hse
lf-
tapp
ing
stee
lsc
rews
..So
lder
shal
lno
t,be
used
tocl
ose
thes
eho
les.
C)Fa
inho
les
inve
rtic
alho
llow
memb
ers
shal
l,b
ecl
osed
,wit
hre
mova
ble
well
hut
plug
sor
othe
req
uiva
lent
devi
ces.
Al1“’
di-a
inho
les
inho
rizo
n.ta
l..h.ol
lowme
inbe
rssh
all
bele
ftop
en’.
..—
.—,.
.
Forfi
nish
proc
edur
ese
eF-
108.
.”.
—.—
.—
.-—
.—-.
..
o,m
..
Downloaded from http://www.everyspec.com on 2009-02-25T5:20:18.
●
FOR
USE
ON
Exte
rior
surf
aces
offe
rrou
sal
lov
(Cont.)
d. e. f. 9. h.
Elec
tro~
late
dCa
dmiur
nVa
cuum
depo
site
dca
dmiu
mMe
chan
ical
lyap
-pl
ied
cadm
ium
Vacu
umde
posi
ted
alum
inum
Ion
vapo
rde
-po
site
dal
umin
um
Aust
enit
ic30
0se
ries
corr
osio
nre
sist
ant
stai
nles
sst
eels
Mart
ensi
tic
400
seri
esco
rros
ion
re-
sist
ant
stai
nles
sst
eels
used
inap
pli-
cati
ons
wher
ete
mper
-at
ures
dono
tex
ceed
649°
C(12
000F
)(s
uch
asex
haus
tsy
stem
sfo
rga
soli
nean
ddi
esel
engi
nes
used
for
supp
ort
equi
pmen
t)
TABL
EII
.Pa
int
fini
shes
(Fan
dFF
).-
Cont
inue
d
FIN
ISH
CODE
NUMB
ER
F-11
2
F-20
0
F-20
1
TYPE
EXPO
SURE
Ior
11
Ian
d11
Ior
11
FIN
ISH
PROC
ESSE
S
I $—Fo
rfi
nish
proc
edur
ese
eF-
108.
I
— 1.
Afte
rcl
eani
ng,
cond
itio
ning
not
requ
ired
.2.
Pass
ivat
ewi
thty
pes
1,II
,11
1or
IVpa
ssiv
atio
ntr
eatm
ents
ofQQ
-P-3
5.3.
Nofi
nish
requ
ired
..
——
1.Af
ter
clea
ning
,co
ndit
ioni
ngno
tre
quir
ed.
2.,P
assi
vate
with
appr
opri
ate
pass
ivat
ion
trea
tmen
tof
QQ-P
-35.
3.No
fini
shre
quir
ed.
Downloaded from http://www.everyspec.com on 2009-02-25T5:20:18.
—.
..
FOR
USE
ON
TABL
EII
.Pa
int
fini
shei
(Fan
dFF
).-
Cont
inue
d“
——
Mart
ensi
tic
400
seri
esco
rros
ion
resi
stan
tst
ainl
ess
stee
lsus
edin
appl
icat
ions
wher
ete
mp-
erat
ures
dono
tex
ceed
649°
C(lZ
000F
)(A
ppli
-ca
tion
sot
her
than
exha
ust
syst
ems)
Mart
ensi
tic
400
seri
esco
rros
ion
resi
stan
tst
ainl
ess
stee
lsus
edin
appl
icat
ions
wher
ete
mp-
erat
ures
dono
tex
ceed
371°
C(7
00°F
)
Mart
ensi
tic
400
seri
esco
rros
ion
resi
stan
tst
ain-
less
stee
lsus
edin
ap-
plic
atio
nswh
ere
temp
er-
atur
esdo
not
exce
ed15
9°C
(300
°F)
—
.—.-
—-
——
.—--
—-
IT..-——-.—.——
-——
-.-—--
————-.-
FINI
SHCO
DETY
PEFI
NISH
PROC
ESSE
S
NUMB
EREX
POSU
REI
1,
,
F-20
2lI
orII
.I
1.Af
ter
clea
ning
,co
ndit
ion
byab
rasi
vebl
asti
ng
F-2(
I3
F-20
4
~———
inac
cord
ance
-wit
hSt
eel
Stru
ctur
esPa
inti
ngCo
unci
l,Vo
l.2,
Sec.
2,!i
o.””
6(S
SPC-
SP6-
63).
2.Pa
ssiv
ate”
with
appr
opri
ate
pass
ivat
ion
trea
t-me
ntof
QQ-P
-35.
~:“
Fina
lfi
nish
with
alum
inum
coat
ing
conf
ormi
ngto
eith
er’MI
L-C-
2321
7,MI
L-C-
8174
0,MI
L-C-
8175
1i
orMI
L-C-
83W1
8..—
.———
+—–—
–.——
--
Ior
II!l
.i4
fter
clea
ning
,co
ndit
ionb
yab
rasi
vebl
asti
ngi :.
inac
cord
ance
with
Stee
lSt
ruct
ures
Pain
ting
I !.Co
unci
l.VO
1.2.
Sec.
2.No
.6
(SSP
C-SP
6-53
).:2.
.,Pa
s5iv
ate
with
-app
ropr
iate
pass
ivat
ion
trea
t-
1or
II
ment
ofQQ
-P-3
5.3:
Fina
lfi
nish
with
0.08
9MM
to0.
114m
m’(
3.5’
to4.
!ro
il)dr
yfi
lmth
ickn
ess
ofin
orga
nic
zinc
rich
prim
erco
nfor
ming
toMI
L-C-
3833
6or
”MIL
-P-”
2323
6ty
pe1,
clas
s3.
--
l;Af
ter
clea
ning
,co
ndit
ioni
ngno
tre
quir
ed.
2.Pa
ssiv
ate
with
appr
opri
ate
pass
jva’
tion
trea
t-me
ntof
QQ-P
-35.
,.
3..
Prim
ewi
th0.
015m
mto
0.02
3M(0
.6.to
0.9m
il)
~dr
yfi
lmth
ickn
ess
ofep
oxy
prim
er”c
onfo
rmin
gto
MIL-
P-23
377,
type
I.4.
’Fi
nish
-Co
atwi
thco
mpat
ible
fini
shma
teri
alfr
omta
ble
V,V
Ior
VII
ofth
isst
anda
rd.
—...’
●●
✎.
..0
:.””
”
Downloaded from http://www.everyspec.com on 2009-02-25T5:20:18.
*
FOR
USE
ON
,Hig
hst
reng
thst
eels
with
aha
rdne
ssle
vel
ofRo
ckwe
llC4
0an
dhi
gher
1230
MPA
(180
,000
KS
I)ul
tima
tete
nsil
est
reng
th
High
stre
ngth
stee
lswi
tha
hard
ness
leve
lof
Rock
well
C40
and
high
er12
30MP
A(1
80,0
00KS
I)ul
tima
tete
nsil
est
reng
th
Alum
inum
allo
ys.
(All
bare
orcl
adal
umin
umal
loy
surf
aces
used
inst
ruct
ural
load
bear
ing
appl
icat
ions
and
all
2000
and
7000
seri
esal
umin
umal
loys
used
for
stru
ctur
-al
load
bear
ing
orno
nlo
adbe
arin
gap
plic
atio
ns)
TABL
EII
.Pa
int
fini
shes
(Fan
dFF
).-
Cont
inue
d
FINI
SHCO
DE~l
JMBE
R
F-30
0
FF-3
01
F-40
0
TYPE
EXPO
SURE
Ior
11
Ior
II
Ior
II
FINI
SHPR
OCES
SES
1.Af
ter
clea
ning
,co
ndit
ioni
ngno
tre
quir
ed.
2.Ca
dmiu
mpl
ate
inac
cord
ance
with
QQ-P
-416
,ty
peII
,cl
ass
2or
cadm
ium
coat
inac
cord
ance
with
eith
erMI
L-C-
8837
orNI
L-C-
8156
2..A
lumi
numco
atin
gsin
acco
rdan
cewi
thei
ther
NIL-
C-23
217
orYI
L-C-
8348
8ar
eac
cept
able
subs
ti-
tute
sfo
rca
dmiu
m.3.
Prim
ewi
th0.
015m
mto
0.02
3mm
(0.6
to0,
9mil
)dr
yfi
lmth
ickn
ess
ofep
oxy
prim
erco
nfor
ming
toMI
L-P-
2337
7,ty
peI.
4.Fi
nish
-Co
atwi
thco
mpat
ible
fini
shma
teri
alfr
omta
ble
V,VI
.or
VII
ofth
isst
anda
rd.
1.Af
ter
clea
ning
,co
ndit
ioni
ngno
tre
quir
ed.
2.Ch
romi
umpl
ate
inac
cord
ance
,wi
thQQ
-C-3
20cl
ass
2.
1.
Afte
rcl
eani
ng,
cond
itio
ning
not
requ
ired
.2.
Pret
reat
with
anan
odic
coat
ing
conf
ormi
ngto
type
IIof
MIL-
A-86
25.
3.Pr
ime
with
0.01
5to
0.02
3mm
(0.6
to0.
9mil
)dr
yfi
lmth
ickn
ess
ofep
oxy
prim
erco
nfor
ming
toMI
L-P-
2337
7,ty
pe1.
4.Fi
nish
-Co
atwi
thco
mpat
ible
fini
shma
teri
alfr
ota
ble
V,V
Ior
VII
ofth
isst
anda
rd.
Downloaded from http://www.everyspec.com on 2009-02-25T5:20:18.
TABL
EII
.Pa
int
fini
shes
{Fan
dFF
).-
Cont
inue
d
FOR
USE
ON
~are
”or
clad
~o
oo
ml,
Alum
lnum
allo
ys
6000
seri
esal
umin
um”
allo
ysus
edfo
rno
n-st
ruct
ural
,no
nloa
dbe
arin
gap
plic
atio
ns)
Inte
rior
surf
aces
ofop
enan
dcl
osed
holl
owme
mber
s(A
llba
rean
dcl
ad20
00,
5000
,60
00,
and
7000
seri
esal
umi-
num
allo
ys)
FIN
ISH
CODE
NUMB
ER
F-40
1
F-40
2
TYPE
EXPO
SURE
—FI
NISH
PR~S
tS
1.,A
fter
clea
ning
,co
ndit
ion
with
deox
idiz
erco
n-fo
rmin
g’t
oMI
L-C-
3833
4.2.
Pret
reat
with
chem
ical
conv
ersi
onco
atin
gco
n-fo
rmin
gto
clas
sla
ofMI
L-C-
8170
6ap
plie
din
.’ac
cord
ance
with
MIL-
C-55
41.
3.Pr
ime
with
0.01
5to
0.02
3mm
.(0.
6to
0.9m
il)
dry
film
thic
knes
sof
epox
ypr
imer
conf
ormi
ngto
MIL-
P-23
377,
”typ
eI.
4.Fi
nish
’-Co
atwi
thco
mpat
i”bl
efi
nish
mate
rial
“fro
mta
ble
V,V
I,or
VII
“ofth
isst
anda
rd.
.-
1.
Afte
rcl
eani
ng,
cond
itio
ning
not
requ
ired
.2.
Holl
owme
mber
spr
evio
usly
pret
reat
edin
acco
r-~
danc
ewi
thfi
nish
code
sF-
400
and
F-40
1do
not
requ
ire
furt
her
pret
reat
”men
t.Ot
her
proc
edur
esre
quir
eap
prov
alof
the
proc
urin
gac
tivi
ty.
.3.
Afte
rcl
osur
e,ex
cept
thos
eho
llow
memb
ers
that
tran
spor
tga
sses
orfl
uids
,ap
ply
MIL-
C-16
173,
grad
eIco
rros
ion
prev
enti
veco
mpou
ndto
inte
rior
surf
aces
.Ap
plic
atio
nof
the
comp
ound
toth
ein
teri
orsu
rfac
esof
vert
ical
and
hori
zont
alcl
osed
holl
owme
mber
s,ex
cept
thos
eho
llow
memb
ers.
whic
htr
ansp
ort
gass
esor
flui
ds,
may
bedo
ne,,
thro
ugh
perm
anen
tdr
ain
hole
sor
hole
sth
atha
ve,be
endr
ille
dsp
ecif
ical
ly”f
orap
plic
atio
nof
the
corr
osio
n.pr
even
tive
comp
ound
.Th
eho
le’s
shal
lbe
spac
edto
perm
itco
mple
teco
vera
geof
the”
inte
rnal
surf
aces
and
cons
eque
ntdr
aina
geof
the
exce
ssco
atin
g,ma
teri
al.
All“h
oles
that
.we
redr
ille
dex
pres
sly
for
appl
icat
ion
ofth
eco
rros
ion
prev
enti
veco
mpou
ndsh
all
‘be,
clos
edwi
thse
lfta
ppin
gal
umin
umsc
rews
..S
olde
rsh
all
not
beus
edto
clos
eth
ese
hole
s.Dr
ain
hole
s.in
vert
ical
holl
owme
mber
ssh
all
b~cl
osed
-wit
hre
mova
ble
.,we
llnu
tpl
ugs
orot
her
equi
vale
ntde
vice
s.-
All
drai
nho
les
inho
rizo
ntal
holl
ow’”
rnem
bers.sh
all.
bele
ftop
en— ,0.
,.
Downloaded from http://www.everyspec.com on 2009-02-25T5:20:18.
●
TABL
EII
.Pa
irit
fini
shes
(Fan
dFF
)Z-
Cont
inue
d
@
FOR
USE
ONFI
NISH
CODE
TYPE
FINI
SHPR
OCES
SES
NUMF
JER
EXDf
)Sll
RE
Exte
rior
surf
aces
ofop
enF-
400
Ior
IIF
orfi
nish
proc
edur
ese
eF-
400
and
clos
edho
llow
memb
ers
(All
bare
and
clad
2000
,F-
401
Ior
11Fo
rfi
nish
proc
edur
ese
eF-
401
5000
,60
00an
d70
00se
ries
alum
inum
allo
ys)
Magn
esiu
mal
loys
F-50
0Ior
II1.
Cle
anwi
thal
kali
necl
eane
rco
nfor
ming
to~I
L-C-
2576
9or
inac
cord
ance
with
MIL-
M-31
71to
re-
move
all
soil
s.2.
Pret
reat
with
bich
roma
teco
nver
sion
coat
ing
con-
form
ing
toty
pe11
1of
MIL-
M-31
71.
3.Pr
ime
with
0.02
5to
0.03
8mm
(1.0
to1.
5mil
)dr
yfi
lmth
ickn
ess
ofep
oxy
prim
erco
nfor
ming
toMI
L-P-
2337
7,ty
peI.
4,Fi
nish
-Co
atwi
thco
mpat
ible
’fin
ishma
teri
al.,
from
tabl
eV,
VIor
VII
ofth
isst
anda
rd.
Magn
esiu
mal
loys
F-50
1Ior
II1.
Cle
anw
ithal
kalin
ecl
eane
rco
nfor
ming
toMI
L-C-
2576
9or
inac
cord
ance
with
MIL-
M-45
202
tore
-mo
veal
lso
ils.
2,Pr
etre
atwi
than
odic
coat
ing
conf
ormi
ngto
type
II,
Clas
sA,
grad
e3or
clas
sII
ofMI
L-M-
4520
2.3,
Prim
ewi
th0.
025
to0.
03%m
(1.0
to1.
5mil
)dr
yfi
lmth
ickn
ess
ofe~
oxyp
rime
rco
nfor
ming
toAI
L-P-
2337
7,ty
peI.
4,,
Fini
sh-
Coat
with
comp
atib
lefi
nish
mate
rial
from
tabl
eV,
VIor
VII
ofth
isst
anda
rd.
Inte
rior
surf
aces
ofop
enF-
502
Ior
II1.
Afte
rcl
eani
ng,
cond
itio
ning
not
requ
ired
.an
dcl
osed
.ho
llow
2.Ho
llow
memb
ers
prev
ious
lypr
etre
ated
inac
cor-
memb
ers
(All
magn
esiu
mda
nce
with
fini
shco
des
F-50
0or
F-5o
2do
not
allo
ys)
requ
ire
furt
her
pret
reat
ment
.Ot
her
proc
edur
esre
quir
eap
prov
alof
the
proc
urin
gac
tivi
ty.
A
Downloaded from http://www.everyspec.com on 2009-02-25T5:20:18.
.!
R.
I
TABL
EII
.Pa
int
fini
shes
(Fan
dFF
).Co
ntin
ued
——
FOR
USE
ON
Inte
rior
surf
aces
ofop
enan
dcl
osed
holl
owme
mber
s(A
llma
gnes
ium
allo
ys)
cont
inue
d.
Exte
rior
surf
aces
ofop
enan
dcl
osed
holl
owme
mber
s(A
llma
gnes
ium
allo
ys)
Wood
surf
aces
o
FINI
SHCO
DENU
MBER
F-50
2
..
F-50
0
F-50
1
F-60
0
TYPE
EXPO
SURE
Ior
II
Ior
II
Ior
II
IorI
I
._._
..—
____
___
...—
—
FINI
SHPR
OCES
SES
—.—
—.
“3.
.,
Afte
rcl
osur
e,ex
cept
.th
ose
holl
owme
mber
that
tran
spor
tga
sses
orfl
uids
,ap
ply
MIL-
C-11
796,
grad
eII
Ior
MIL
-C-1
6173
,gr
ade
2co
rros
ion
‘“pr
even
tive
comp
ound
.to”
inte
rioi
svrf
aces
.Ap
plic
atio
nof
the
comp
ound
toth
ein
teri
orsu
rfac
esof
vert
ical
and
hori
zont
al‘c
lose
dho
llow
memb
ers,
exce
ptth
ose
holl
owme
mber
s’wh
ich
tran
spor
tga
sses
orfl
uids
,ma
ybe
”do
neth
roug
hpe
rman
ent-
drai
nho
leso
rho
les
that
have
been
’dri
lled
spec
i.fi
c’al
lyfo
rap
plic
atio
n.of
the
corr
osio
npr
even
,~iv
eco
mpou
nd.,
The’
hole
s”sh
all
besp
aced
tope
rmit
‘com
plet
eco
vera
geof
the
inte
rnal
surf
aces
and.
cons
eque
ntdr
aina
geof
the
exce
ssco
atin
gma
teri
al.
All
hole
s’th
atwe
redr
ille
dex
Dres
slv.
four
aDDl
icat
ion”
ofth
eco
rros
ion
prev
enti
ve~o
mpou
nd’.
shal
lbe
clos
ed~
with
self
-tap
ping
magn
esiu
msc
rews
..So
lder
ish
all
not
beus
edto
clos
eth
ese
hole
s.Dr
ain
hole
sin
vert
ical
holl
owme
mber
ssh
all
be~. I
clos
edwi
thre
.mov
able
’wel
lnu
tpl
ugs
orot
her
ieq
uiva
lent
devi
ces.
All
drai
nho
les
inho
rizo
n-/
tal
holl
owme
mber
ssh
all
bele
ft.op
en.
~.-,
For
fini
shpr
oced
ure
see”
F-50
0...
~—.
For
fini
shpr
oced
ure
see
F-50
?,.
——..:-—.-
..—.
.—
1..T
horo
ughl
”ysa
ndsu
rfac
esin
acco
rdan
ce‘w
ithbe
stco
mmer
cial
prac
tice
..’
2.Af
ter
any
nece
ssar
y.bo
ndir
igor
mask
ing
ofar
eas
tobe
bond
ed,
seal
with
cle?
rMI
L-W-
1351
8wi
than
extr
aco
atap
plie
d’to
.en
dgr
ains
.3.
Fini
sh-
Pain
twi
thco
mpat
ible
fi”n
al’fil
mfr
omta
ble
V,VI
orVI
Iof
this
’st
anda
rd.
.,—-
—-.....~.—
..-—.
.._—
,“.0
,~~
Downloaded from http://www.everyspec.com on 2009-02-25T5:20:18.
J=
●o
TABL
EII
.Pa
int
fini
shes
(Fan
dFF
).-
Cont
inue
d
FOR
USE
ONFI
NISH
CODE
TYPE
FINI
SHPR
OCES
SES
NUMB
EREX
POSU
RE
Wood
surf
aces
F-60
11or
111.
Cond
itio
nby
thor
ough
sand
ing
inac
cord
ance
with
the
best
comm
erci
alpr
acti
ce.
2.Ap
ply
not
less
than
thre
eco
ats
ofTT
-V-1
21va
rnis
h.
Engi
nes,
auto
moti
ve,
FF-7
00?or
11J.
Clea
ning
}Pa
cket
te,
etce
tera
2.Pr
etre
atme
nt}
inac
cord
ance
with
best
3.Pr
imin
g]co
mmer
cial
prac
tice
,ex
cept
all
unit
s4.
Fini
sh)ex
pose
dto
view
shal
lbe
pain
ted
colo
rnu
mber
2405
2of
FED-
STII
-595
Cran
kcas
ese
aler
FF-7
01II
1.Af
ter
clea
ning
,co
ndit
ioni
ngis
not
requ
ired
.(C
ast
iron
hous
ings
of2.
Pret
reat
ment
isno
tre
quir
ed.
clut
ch,
tran
smis
sion
,3.
Prim
er-
Pain
tin
teri
orsu
rfac
e,th
isdo
esno
t
diff
eren
tal,
fina
ldr
ive
appl
yto
meta
l-to
-met
alor
meta
l-to
-met
alli
ning
and
brak
e)su
rfac
es,
with
one
coat
ofTT
-P-6
36to
0.02
5to
0.03
8mm
(1.0
to1.
5mil
)dr
yfi
lmth
ickn
ess.
Aco
mmer
cial
cran
kcas
ese
aler
may
beus
edin
lieu
ofth
eab
ove
mate
rial
s.4.
...Fini
sh-
Not
requ
ired
.
Gene
rati
ngpl
ant
comp
onen
tsFF
-702
Ior
111.
,Cl
eani
ngpr
oced
ure
will
bede
pend
ent
onst
eel
allo
ysu
bjec
tto
elev
ated
temp
er-
2.Pr
etre
atme
ntwi
llbe
depe
nden
ton
stee
lal
loy.
atur
esof
205°
Cto
530°
C;
3.Pr
ime
with
one
coat
ofMI
L-P-
3833
6or
MIL-
P-23
236,
[400
0Fto
1000
°F)
(Oth
erty
pe1,
clas
s3
to0.
089
to0.
l14m
m(3
.5to
4.5m
il)
than
stai
nles
sst
eel
exha
ust
dry
film
thic
knes
s.sy
stem
s)4.
Topc
oat
with
ahi
ghte
mper
atur
ere
sist
ant
sili
cone
/..
zinc
pain
tas
appr
oved
byth
epr
ocur
ing
acti
vity
.
Pipe
line
san
dco
mpre
ssed
FF-7
03Ior
111.
Clea
ning
,co
ndit
ioni
ng,
pret
rea”
tmen
tan
dPa
inti
ndga
scy
lind
ers
shal
lbe
asap
prov
edby
the
proc
urin
qac
tivi
ty.
2.Ma
rkin
qan
dco
lor
codi
nqsh
all
bein
acco
rdan
cewi
thMI
L-ST
D-1O
I.
Downloaded from http://www.everyspec.com on 2009-02-25T5:20:18.
,’
Mate
rial
Ferr
ous
Allo
y
Ferr
ous
Allo
ys
Ferr
ous
Allo
ys
Alum
inum
Alfl
oys
Alum
inum
Al10
yS
TABL
E11
1.El
ectr
ical
cond
ucti
vity
ofpa
ssiv
ated
fini
shes
.
Type
,Exp
osur
e
I II 1’ 11 I 11 11 II
Fini
shNu
mber
P-11
5
P-16
2
P-11
7
P-16
3
D-10
1
D-10
2
D-35
0
D-35
1
.—.
.
Fini
shDe
scri
ptio
n
.-—
——
.
Chro
mate
-tre
ated
cadm
ium
—
Phos
phat
e-tr
eat-
edzi
nc
—
Phos
phat
e-tr
eat-
ment
,,.
Anod
ized
“
..
Chem
ical
film
Cond
ucti
ngPo
wer
Freq
uenc
y
No No
——No No No
Cond
ucti
ngRF
Freq
uenc
y
Yes
Yes
No No
—-—.
. Yes
Rema
rks
-Ele
ctri
cal
cont
act
may
requ
ire
use
ofto
othe
dty
pelo
ckwa
sher
s.~/
kibc
tric
alco
ntac
tma
yre
quir
eus
eof
toot
hed
type
lock
wash
ers.
~/~.
—-.
.—--.—--:.—.
...—-.
—-Th
ese
fini
shes
are
poro
us,
thei
rus
ein
cont
act
with
othe
rme
tals
must
bere
stri
cted
toth
ose
form
ing
coup
les
comp
atib
lewi
thfe
rrou
sal
loys
(exc
ept
stai
nles
sst
eel)
.——
——..
——.—
.May
beus
edin
cont
act
with
any
“dis
simi
lar
“.me
tals
...
....
Elec
tric
alco
ntac
tma
y-re
quir
eus
eof
toot
hed
type
lock
wash
ers.
:—-
.—--
.-—-
-—--
-
1/Ch
roma
tefi
lms.
deRe
ndin
aon
thic
knes
s,ha
vea
rela
tive
lylo
wel
ectr
ical
“ies
fsta
nce
from
_,0.
0001
to0.
002
ohms
eve;
aco
ntac
tar
eaof
Isq
uare
inch
with
cont
act
pres
sure
of”1
00”P
SI.
,
0~~
o
Downloaded from http://www.everyspec.com on 2009-02-25T5:20:18.
MIL-STD-808A(USAF)
TABLE IV. Metallic coatings other than electroplated coatings (M).
f f&
Finish Type Metallic Coating Minimum Coating ApplicableNumber Exposure Description Thickness in Specification ,,
Millimeters“
M-100 I or 11 Vacuum deposited 0.008 MIL-C-8837, Type II,cadmiurn Class 2
I!%101 I or 11 Mechanically 0.008 MI.L-C-81562, Type 11,
deposited cadmium class 2
M-102. I or II Vacuum deposited 0.025 MIL-C-23217, Class 1aluminum
M-103 I or II Ion vapor depo- 0.025 MIL-C-83488, Type II,sited aluminum Class 1
M-104 I or 11 Mechanically 0.025 !41L-C-81562, Type II,depos~ted zinc Class 1
● ‘!4-105 I Oi’ 11 U-+ Ain 7fnp-I,ut. USy ..o..- 0.036 ASTM A525, Regularcoating (galvaniz- (To:o~)both Type, Designation GXied) (See 5.5.1.4)
M-106 1 or 11 Hot-dip zinc- 0.084 ASTM A123coating (galvaniz-ed) (See 5.5.1.4)
L t ~
47
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,,,., .
@
,-
●✌
0
MIL-5TD-808A(USAF) “.’,’
,.’
.’ ,,,’
,,,,%Nm ,,m
,, CL,. L ,,‘s
al
o
aJ
nfoLt.)g,--“ w-nLncL<
— — — — —— — —
N0FIn
h.w0e’
*u0In
1-CnFml.
m3.0
— — —— — — —
.> a
E2
L0
‘G,V
i
— — —— — — —
c0
g
—— — —
48
Downloaded from http://www.everyspec.com on 2009-02-25T5:20:18.
●
Film
Desi
g-na
tion
AS 0s Cs 0S ES
TABL
EV
I.Fi
nal
pain
tfi
lm-
semi
-gl~
.
Colo
rNa
me
—
Sea
Blue
Inst
rume
ntBl
ack
Green
Gray
Gree
n
FED-
STD-
595
Colo
rNo
.
2504
2
2703
8
2430
0—
2562
2
2405
2
Appl
icab
lePr
imer
s
MIL-
P-23
236
MIL-
P-23
377
MIL-
P-26
915
MIL-
P-38
336
Appl
icab
lePa
int
Spec
ific
atio
n
MIL-
C-83
286
—
r J/-1
G’
&
Downloaded from http://www.everyspec.com on 2009-02-25T5:20:18.
.,
MIL-STD”-808A(USAF),,.
a.’.
m1%
zm
—
co&
— — —
uLD
Loe-lI-’4
i-+.uu>
— . — — — — — — —
w
L0
“ov
vc
: 0
— — — — — — — —
i
-1r
—
-1m
-10
—— — — — — —
Downloaded from http://www.everyspec.com on 2009-02-25T5:20:18.
MIL-STD-808A(USAF)
cov
I
E
IEn
-mc
.u
H
>
w
al
al
)L
)1.co.ml-o
:U!ozI c
Lo
—
YLJm
n
—
—.
—
-1x
—
./’
51
Downloaded from http://www.everyspec.com on 2009-02-25T5:20:18.
,,
,’
., MIL-STD-808A(!JSAF) .: ‘“
,TABLE VI II., Finishes or process ottierthan .painting or plating (D), ‘
For Use On,,
Plated ferrous,alloys.(other than stain-~ess steels) having”aRockwell hardness.gFeater”than C-40 “
Ferrous alloys otherthan stainless steel(wearing parts lubri-cated in service)
Ferrous alloys otherthan stainless steel(non-wearing. partsnot lubricated inservice)
rnacninea or weldedstainless steel,parts
Corrosion-resistantsteels (dull finish)
Aluminum alloys.(see 5.4.1)”
Aluminum alloys(see 5.4.1)
“aType : Finish ProcessFinish ., :,,
Exposure Number ‘.
I or 11 D-1OO 1.’
,2.
,., 3.
Preclean in accordance with5.3.1. “Clean andcondition by abra,-sive blasting. (See.5.3 .2.3)Apply applicable metalliccoatinq in accordance withTable ~ or Table IV. ““--
.11
i or 11
II
I or II(see’~/)
II
D-101 1‘. After cleaning, conditioningnot required.
2. Pretreat with phosphate filmper MIL-P-16232,, type M;class 2.
iD-102 1. After cleaning, conditioning
not required.2. Pretreat with, phosphate film
per NIL-P-16232, type Z,class 2.
D-20U i. After cleaiiing, ccnditiofiifignot required.
2. Passivate with applicablepass.ivation treatment in ac-cordance with QQ-P-35.
3. All ferritic and martensiticsteels shall be chromatetreated after passivationin accordance with QQ-P-35.
I-I-219 1. Cleaning and conditioning(see 5.3.2.4)
2. Pretreatment with black oxidper MIL-C-13924, class 4.
D-350 ‘1. Conditioning not required.2. ‘Pretreat w~th anodic film
per ?IIL-A-8625, type II.
D-351. 1. Conditioning not required.2. Pretreat with chemical film
per MIL-C-81706, clais 1A.
,,.
,.
,,
a
1 I I
52
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oMIL-STD-!308A(USAF)
TABLE VIII. Finishes or process other thanpainting or plating (D). - Continued
For Use on Type Finish Finish ProcessExposure Number
Aluminum alloys. I or 11(See 5.4.1.1)
D-352 1. Conditioning, not requi~ed.
-2, Pretreat with chemical filmper MIL-C-81706, class 3.
Aluminum alloys 1 or 11 “D-353 1. Conditioning not required.2. Pretreat with anodic film
per MIL-A-8625, type 111.
~/ Anodic films are satisfactory for type I or II surfaces only on smallunthreaded parts.
53
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,,,,, MIL-”STD-808A(USAF) ‘, ‘ “,. ,“.,, ,,,
TABLE IX. Finish selections. “,,./ ..
,“.
rype.Class of Part” Conditions $ffecting Expo- , Applicable ‘Fi,nish.
‘Finish Selection sure “ “’,, ,,
FABRICATED FROY FERROUS ALLOYS OTHER THM iTAIt4LEis STEEL
Massivestructural Tank cleaning andpre- “I F-1OO; F-103, or F-102p~rtsand ass~bl.ies, treatment i“s,practical.
: ,. ,,,.suchas the bodies of ,’
trucks, ‘trailers, ,,,.
semi-trailers, atid, ~ ,. ,,,. .,,’vans,special, purpose
,,,’,,vehicles of all types,large brackets,, gus-.sets, and assembly ,,hardware.
La’rgebolts, nuts, Parts will require I P-114, P-115, ”P-116,washers, and similar painting after assembly. P-117, M-1OO, M-102type hardware for or M-103assembly of massive
,.
structures. ,
Lesser structural Tank pretreatment is .1 ‘F-101, F-103, F-102” ~parts and assemblies practical .such,as racks, cases, ,.
castings, ‘hous~ngs, Tank pretreatment is not I F-101, F-103, F-104panels, brackets, practical. C)rF-105etc.
Inside of open and “I F-106, F-107closed hollow’members.
Small hardware Parts will be exposed .1 F-1OO, F-101, F-102,(except threaded to environment when F-103, F-104, F-105,parts) such as assembled in equipment. P-114, P-118, P-170,hinges, fasteners, P-171, M-105, orcatches handles, M-106truck corners, Parts will not be expos- 1washers, special-
F-1OO, F-101’,F-102
ty parts, etc.ed to environment when F-103, F-104, or any
(See 5.1 .2.6.)assembled in equipment. plate of metallic coat-
ing for type I expo-sure per table I ortableIV.
Parts will be painted 1 P-114, P-115, P-116,after assembly. P-117, $I-1OO,M-101 ,
M-102, M-103, !4-105orhl-106
Parts will be exposed ‘1 P-102 or P-107to the environmentwhen assembled andcannot be painted.
54
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MIL-STD-808A(USAF}
TABLE IX. Finish selections (cont.).
Class of Part
Small hardware(continued)
Screws, bolts, nutsand threaded parts
Any type of part(except threadedparts )
Wearing parts lubri-cated in service
Conditions AffectingFinish Selection
TypeExposure
Parts were platedby manufacturerwith any plate,except cadmium orzinc, and requirespainting afterassembly,Parts were plated bymanufacturer withcadmium or zinc andrequires paintingafter assembly.
I
7-
Parts will not beexposed to environ-ment after assemblyin equipment.
Ior11
Parts will bepainted afterassembly.
!fter assembly in Iequipment (except orparts which cannot 11be painted, )
Parts will be sub- 1jetted to tempera- ortures in excess of
III
!50°F.
Applicable Finish’ “
F-108
~-170, P-171, M-1OO4-102, or M-103
)-162, P-170, M-1OO,!-102, or M-103
‘-100, F-101, F-102,)r F-108.
\ny plate or metallic:oating for type 1 expo-,ure from table I or IVycept cadmium or zinc. .
~arts will not be ; II Any plate or mecailicsubjecte+ to temper- ~
Ico~ting for type 11 ex-
atures in excess of \ posure from table I or I450°F, IIV.
1 IParts will be in con-tact with uncuredphenolics or subject-ed to Rhenolic vaDors
11 Any plate or metalliccoating for type 11 ex-posure from table I or IV.exceDt cadmium or zinc.
Parts will be period-l 11 ID-101 I
55
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., ,,
9
‘0
.0
TABLE IX. Finish selections (continued). ,“ ,:I
“ype:xpo-iure
Applicable Finish ;Class of Part Conditions AffectingFinish Selection” ,
‘Parts cannot be lubri-cated and will not besubjected to highbearing pressures
P-104 or P-108Sliding wearingsurfaces suchas.guiderails, et cetera,,re-quiring electricalconductivity
Gears, cams, slides,et cetera.
II‘, .,
Parts cannot be lubri-cated and will besubjected to highbearing pressure
11 P-108
IAny type of part I An electrical conduct-
ive dissimilar metal11 Any plate for type 11
exposure per table I& MIL-STCI-889.\ contact is required
Hardened steel partssuch as coil springs,washers, etc., sub-..jectto hydrogenembrittlement
Plating is requiredfor protection dueto equipment design ,
I Any plate or metalliccoating for type I ex-Dosurefrom table I orIV except zinc plus D-10(llnit g:~~~ ~y. --+-.77
I,l,,r Illcl.al Iic
co~ti,ng for type II,expo-sure from table I or IVexcept zinc plus D-1OO.
‘,
FABRICATED FROM STAINLESS STEEL”ALLOYS
Parts will be expos-ed to environment inassembled equipment
Parts will not be ex-posed to environmentin assembled equipment
Parts will be exposedto environment in as-sembled equipment
Parts will not be ex-posed to environmentin assembled equipment
I F-200,”F-201, F-202,F-203, F-204
Large ”parts
I No finish required.
Small parts F-200, F-201, F-202,F-203, F-204.
I No finish required
Welded or machinedparts made of stain-less steel
Any type parts in-cluding interiorsurfaces of hollowmembers .-...._---T-.-.-=..‘Exhaust systems
D-200
II No finish required
1 No finish requiredorII
Downloaded from http://www.everyspec.com on 2009-02-25T5:20:18.
MIL-STD-808A(USAF)
● TABLE IX.. Finish selections (continued),. [
Class of Part \ Conditions Affecting Type Applicable FinishFinish Selection Expo-
1 sureI
FABRICATED FROM ALUMINUM-BASE ALLOYS
I Massive structural II Tank Pretreatment I F-400, F-401 , D-350,I
parts and assemblies is practical or D-353. - -brackets, gussets, Tank pretreatment is I F-400, F-401, D-350,and hardwa~e not practical or D-353”assemblies
Any type parts Parts will be subject- 1 D-353ed to high degree of orabrasion when IIfunctioning
Lesser structural Tank pretreatment, I F-400, F-401, F-402,parts and assemblies is practical 0-350, D-353such as racks, cases Tank pretreatment Icastings, housings, .F-401
panels, brackets,is not practical
~~~ .
Small hardware such Parts will be exposed I F-400, F-401 or F-402.as hinges, fasteners to the environmentcatches, handles, when assembled in thescrews, nuts, bolts, equipmentwashers, etc. Parts will be exposed I D-350, D-351, D-353
to the environmentwhen assembledin equipment and can-.
t ‘ot be “a’nted
Parts will not be ex- 1 Any plate for type 11posed to the environ- exposure per table I orment when assembled D-350.in the equipment
I !
Internal structural None 11 D-350. D-351. D-353parts such as chassis A non-conducting II D-350, F-306, orfor electrical equip- surface is required D-353.ment, brackets, in- Plating is required 11 Any plates for type Iside of panels, for contact with dis- exposure per table Iclamps, clips, hinges, similar metals and MIL-STD-889.etc.
57
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TABLE IX. Finish selections (continued).!, a
Class of Part “., Conditions Affecting Type Applicable FinishFinish Selection ~xpo. .’. ”
sure ‘ ;
Parts made from A power electrical 11 D-3525000 and6000 alloys ,conducting surface
.,
is required “
Open hollow members ,, I ,F-402(Interior ‘surfaces) or
II
Closed hollow members(Interior surfaces),
I F-402or ,,11
PARTS FABRICATED FROM !vIAGNESIUM-BASEALLOYS
All parts I F-500II F-501
Open hollow members I F-502(Interior Surfaces) ‘, or
ii
‘Closed hollow m,emb,ers I(Interior surfaces)
F-502orII
FABRICATED FROM WOOD
All “wood surfaces I. F-600 or F-601unless otherwise orspecified II
Varnished surfaces I F-601orII
OTHER APPLICATIONS
Engines, automotive, I FF-700packette, etc. or
,, 11
Crankcase sealer-cast II FF-701iron housings ofclutch, transmissionsdifferentials, finaldrives, and brakes
,.
,,’
,,
“e
58
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MIL-STD-808A(USAF)
TABLE IX. Finish selections (continued).
TypeClass of Part Conditions Affecting Expo- Applicable Finish
Finish Selection sure
OTHER APPLICATIONS
Generating plant I FF-702components subject tohigh temperatures(400°F to 1,OOO°F)
Pipelines and com- ‘1 FF-703pressed gas orcylinders II
59
. - -- *>>... -. .:-.... “~ >
. . .
..-” ,l.P/’. . . .. ..— ...-
.--’.%-2/ -
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STANDARD;ZAT!ON DOCUMENT\ ltiPROVEMENT PROPOSAL(See lrutructions - Rpq&Sidej
00CUMENI’NLIMBER 2.OOCUME~TTITLE )
.NAME OFSUBMITTINGORGANIZATION 4.TYPEOF ORGANIZATION(M=kOU)
.0 “’VENDOR,. ,9
.O’k- “ “, “.AOOnE”~.(8frgr:.Cl~,Stiti,ZIPCOdr)
•1 ~ “, :’,,MANUFACTURER’
IPROBLEMAREAS ,.
a’ Pw~raph Number” ond Wording:,,, ,.,.
,,.
b. R-ommcndod Wording:
9c. Ro8son/Rstionalc for Rocommondmion:
REMARKS
. NAME OF SUBMITTER fkast, Fht, Ml] - Optional b. WORK TELEPHONE NUMBER (Jnclude AfwoCo&) - Optlon91
MAILING AOORESS (S-et, City. Wok, “ZIP Code) - Optionsl 6. DATE OF SUBMISSION (YYMMDDJ
IDO
FORM82 MAR 1426 PREVIOUS EDITION fS O@SOLETE.
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