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IS 1570-7 (1992): Schedule for wrought steels, Part 7:Steels for elevated temperature service (creep resistantsteels) [MTD 16: Alloy Steels and Forgings]
Indian Standard
SCHEDULE FOR WROUGHT STEELS PART 7 STEELS FOR ELEVATED TEMPERATURE SERVICE
(CREEP RESISTANT STEELS )
( Second Reprint APRIL 1998 )
UDC 669*14*018*44 (083.4)
@ BIS 1992
BUREAU OF INDIAN STANDARDS MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG
NEW DELHI 110002
May 1992 Price Group 7
Alloy Steels aud Special Steels Sectional Committee, MTD 16
FOREWORD
This Indian Standard was adopted by the Bureau of Indian Standards, after the draft finalized by the Alloy Steels and Special Steels Sectional Committee, had been approved by the Metallurgical Engineering Division Council.
Schedules for wrought steels for general engineering purposes ( IS 1570 : 1961 ) was first published in 1961. On the basis of the experience gained in the production and use of steels, the Sectional Committee has decided to revise the standard and issue it in parts. The other parts of the standard are as follows:
Part 1
Part 2
Part 3
Part 4
Part 5
Part 6
This schedule specifications.
Steels specified by tensile and/or yield properties
Carbon steels ( Unalloyed steels )
Carbon and carbon manganese free cutting steels
Alloy steels ( excluding stainless and heat-resisting steels )
Stainless and heat-resisting steels
Tool steels
does not give limits for sulphur and phosphorus. These have to be specified in the detailed
For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, expressing the result of a test or analysis shall be rounded off in accordance with IS 2 : 1960 ‘Rules for rounding off numerical values ( revised )‘. The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard,
IS 1570 ( Part 7 ) : 1992
Indian Standard
SCHEDULEFOR WROUGHTSTEELS PART 7 STEELS FOR ELEVATED TEMPERATURE SERVICE
( CREEP RESISTANT STEELS )
1 SCOPE
1.1 This Schedule ( Part 7 ) covers the technical requirements and informations for wrought carbon, low alloy and high alloy steels for elevated temperature applications used for the construction of steam and water boilers, pressure vessels, turbines, water and steam pipe line as well as other power generating plants. They are delivered as strips, sheets, plates, pipe lines, forgings and forged, rolled or drawn bars as well as blooms and billets.
2 GENERAL
2.1 While preparing Indian Standards, or revising the existing standards, steels listed in this schedule shall be selected. The specification of mechanical properties different from those given in this schedule should not be made unless special condi- tions of service render this essential. In that event, full reasons for the proposed departure from the steels specified in this schedule shall be submitted to the Alloy Steels and Special Steels Sectional Committee, MTD 16 and its approval obtained.
2;2 The ladle analysis of the steels is given in Table 1. These steels have an Increased resistance
to creep due to their alloy contents. The permis- sible deviations between analysis and product analysis are given in Table 2 and the heat treat- ment schedule is given in Table 5.
2.3 These steels are suitable for hot working and cold forming operations and they may generally be welded by the usual welding processes. The hot working characteristics of austenitic steels should be noted.
2.4 In addition to defining the composition limits, the specified mechanical properties appli- cable to the different conditions are included. Table 3 gives the mechanical properties at room temperature and Table 4 gives proof stress at elevated temperature. Table 6 ( for guidance only ) include the data for steels for average creep stresses for 1 o/o elongation and rupture stresses for 10 000, 30 000, 51 000, 100 000, 150 000, 200 000 and 250 000 h.
2.5 The specified mechanical properties are appli- cable to test samples taken from a standard location which should he included in the specifi- cation.
Type of Steel
Table 1 Type of Steel, Chemical Composition and Typical Forms
( Clause 2.2 )
Chemical Composition, wt. y’ Typical Form
(1) 1) Fe360H
2) Fe4lOH
3) 12C7H
4) 18ClOH
5) 16Mo3H
6) 15Mo6H
7) lOMo6H
N 8) 20Mo5H
9) 12Cr4Mo5H
10) 12Cr2Mo5V2H
11) 12Cr9MolOH
12) lOCr36MolOH
13) 4OCrMoH
14) 21CrMoVH
15) 40CrMoVH
16, 20CrMoVTi BH
17) 25Cr2MoVH
18) 20Cr2MoVH
19) 12Cr13H
#.-------4-_------ ______ -__-----*---a--- _-___ -.--I_--- .____ --v----e
C Si Mn Cr MO
(2) 0 20 Max
(3) 0’10 to 0’35
0.10 to W35
0.10 to 0’35
(4)
0’40 to 1’20
U’50 tc, 1’30
0’40 lo 1 %Jo
P S Max Max (5) (6)
0’03 0.03
0’04 o-03
0,045 0’045
(7) (8) 0.25 Max 0'10 Max
Ni V
(9) (10)
0’30 Max --
Others’
0’20 Max 0.25 Max 0’10 Max
0’17 Max W25 Max -
0.30 Mu - -
0.35 Max -
(12)
cu 0.30 Max
Cl1 0’30 Max
CU 0’30 Max
0’15 to 0’22
0’12 to 0.20
0’10 to 0.35
0’10 to 0.35
0.60 to 1’40
0’40 to 0’80
0.045
0’04
0’045
WO30
0’04
0.040
0’040
0’040
0.040
0’035
0’030
0’030
0’03
0.030
0’030
0’040
0.045
0’04
- 0’35 Max -
0.30 Max 0.25 to 0.35
0.35 Max -
CU O-30 Max
CU 0’30 Max Al met 0’02 Max
o-10 to 0.20
@I5 Max
0’15 to 0.25
0’10 to 0’50
0’50 to 1’00
0’10 to 0’35
0’30 to 0’80
0.30 to 0.60
0’90 to 1’40
0’045
0’030
0.04
-
1’00 to 1’50
O-30 Max
0’44 to 0 65
0.45 to fJ.60
0’40 to 0.60
- -
0.30 MUX -
0’10 to 0’10 to 0’40 to 0’18 0.35 0’70
0.70 to 0’45 to 1’10 0’65
-
0’10 to 0.18
0’08 to 0’15
0.15 Max
0’30 to 0’60
0’040
- 0’22 to - 0.32
- -
- -
Cu 0.30 Max Al met 0.02 Max
Al met 0’02 Max aeam
Al met 0.02 Max Al met 0.02 Max Al met WO2 Max
0.35 to 0’45
0.17 to 0.25
0.86 to 0’44
0’17 to 0’24
0’10 to 0’35
0’10 to 0.50
0’25 to 1’0
0.10 to 0’35
0’40 Max
0’10 to 0’35
0’35 Max
xz to
0’30 to 0’70
0’30 to 0.60
0.40 to 0’70
0.40 to 0’80
0.45 to 0’85
0’5 Max
0’030
0’035
0’03
0’03
:z to 1’90 to 2.60
8.00 to IO%0
1.00 to 1’50
1.2 to 1’50
0.9 to 1’2
Y:E to
0’90 to 1’15
0.90 to 1’10
0.50 to 0.80
0.65 to 0 80
::75z to
0.8 to 1’10
0’60 Max 0’25 to 0.35
0.25 to 0’35
0’50 Max 0’7 to 1’0
0’20 to 0’30
0’20 to 0’30
0.09 to 0’15
0’20 to 0’50
0’20 to 0’50
1.00 Max
0’30 to 0’60
0’30 10 O’GO
1’00 Max
0’025
0’030
0’030
1’5 to I’80
1.5 to 1.80
11’5 to 14WI
0’90 to 1’20
0.60 to 0’80
-
0*40 Max 0.20 to 0’30
0’40 Max W20 to 0.30
1’00 Max -
w
(11)
-
-
-
-
-
_-
-
-
-
-
-
-
-
-
-
-
-
Ti 0’05 to 0’12 B 0.005
Cl1 0’30 Max
cu 0*30 Mm
(13)
Plates
Plates
Sz;Tless pjpes pipes
with scam
do
Seamless pipes bars forgings steel plates
Steel plate,s
S;;;leo pipes pipes
with plates
Seamless pipes plater
Seamless pipes bars, forgings
Seamless pipes
Bar, forging
do
do
Bars, forgings
Forgings
Bars, forgings
Bar, forging plates
Table 1 ( concluded )
Type of Steel
(1) 20) 12Cr12MoH
21) 12Crl2MoVH
22) 12Cr12Ni2Mo
23) $K$l2MoNi
24) $IC$NiMoNb
25) 7Cr18NilOH
w 26) 3Crl8NillH
27) 6Cr17Ni12 Mo2H
28) 3g317Ni12Mo
29) 7Cr19Nill TiH
30) 7C$rNi I1
31) 1 lCrl7Ni 0.07 to 1.00 Max 13W3TiH 0’15
0’03 to 0’08
1’00 Max
Chemical Composition, wt. y0 Typical Form --------- __-_- ____ -__--*--_--___-_-----~__.__~~-~ ,
C Si
(2) (3) 0’08 to 0’16
0’08 to 0’16
0’08 to 0.16
O-17 to 0.23
0'60 Max
0.60 Max
0’35 Max
0’50 Max
Mn
(4) 0.40 to 1’00
0’40 to 1’00 0’50 to 0’90
1’00 Max
P Ma*
(5) 0.040
0’040
0.040
0’040
8z0 to
0’045
0’045
0.045
0’045
0’045
0’045
0’045
0’045
AL%
(6)
Cr
(7)
MO Ni Others
0’035 11’5 to 13’00
(9) 1’0 Max
V
(10)
0’035 11’5 to 13’00
1’0 Max
(12) (13) - Bar, forging
Bar, forging
0.030 11’0 to 12’5
0’030 11’0 to 12.50
2’0 to 3’0
0’30 to 1’00
N 0’02 Bar, to 0’04
forging plate
- Bar, forging reamless
0.16 to 0’24 “tt& to
0.04 to 075 Max 0’10
0’030 Max 1.00 Max
0’08 Max 1’00 Max
0’030 Max 1.00 Ma%
0’04 to 0’20 to 0’10 0’80
0’04 to 0’75 Max 0’10
0’3 to 0’24
y$o to 10 to 12
(8) 0’40 to 0’80
0’40 to 0’80 1.5 to 2’00
0’7 to 1’20
0’5 to 1’0
0.3 to 1’00
0.10 to 0% 0’25 to 0’40 0’20 to 0’35
0’1 to 0’30
2’00 Max
2’00 Max
2’00 Max
2’00 Max
0.030
0’030
0.030
0’030
0’030
0’030
0’030
0.030
Bin@yoMax Bar forging
Ma; Nb0’2 to 0.50
17.00 to 20’00
- 8’00 to 12’00
17.00 to 19.00 16.00 to 18’00
- Seamless tubes, plates bars, forgings
Plates, forgings seamless tubes
16.00 10 18’00
-
2’00 to 3’00
2’00 to 3’00
9’00 to 13’00 10.00 to 14’00
10’00 to IWO
- Seamless pipes, bars, forgings plates
- Plates,seamless tubes
2’00 Max 17’00 to 20’00
9.00 to 13W
2’00 Max 17’00 to 19’00
- 9.00 to 13%0
-
-
W
(11) -
-
Ti> 4xc< Seamless pipes, 0’60 bars forgings
yob,‘, ps&== Seamlesspipes, . bars, forgings,
plates 1’00 Max 15.5 to
17.50 00.006 0 13’5 to 16’00
- 12’00 to 14.50
2’00 Max forgings 1’00 to 1’50
24.00 to 27’00
2’5 to Ti > 4xc 3’5 <O-80 B
Seamlesspipes,
O*OOO 6 Max bars forgings
O’lOto Ti 1’9 to 0’50 2’30
Bars forgings,
Al met Seamless pipe
0’35 Max B WOO3 to 0’010
Element not quoted in this table shall not be intentionally added to the steel without the agreement of the purchaser, other than for the purpose of finishing the heat. All reasonable precautions shall be taken to prevent the addition, from scrap or other materials used in mechanical properties and applicability.
manufacture, of such elements which effect the hardenability
IS 1570 ( Part 7 ) : 1992
Table 2 Permissible Deviation Between Specified Analysis and Prodact Analysis
( Clause 2.1 )
Element
%
CuptoO~25
C above 0.25
si up to 1’0
Mn up to 2.0
P up to 0’05
s up to 0’05
Cr up to I
Above 1 up to 2’5
Above 2’5 up to 1090
Above IO.0
Ni up to 1
Above 1 up to 2.5
Above 10’0
MO up IO I
Above 1
v
cu
Al
Nb
W
Permissible DeviPtions*
f 0’02
f 0’03
f 0’05
f 0’0.5
+ O-005
+ 0’005
+ 0’03
f 0.05
l 0’10
f 0.15
+ 0.03
f 0.05
* O-10
+ O-03
f 0’05
f o-02
f 0’02
f 0’005
f 0’005
+ 0’10
*The deviations, other than when maximum or minimum only are specified, apply either above or below the specified limits of the range but not both above and below for the same element from sample products from the same cast.
4
IS 1570 ( Part 7 ) I 1992
Table 3 Mechanical Properties at Room Temperature
( Clause 2.4 )
Tvue Pro duct Heat’) Thickness Hardnesst) R&23) Rm4)
MPa _-- A-.- ‘Min
(8) 360
Max
(9) 480
% Min
520
480
580 22
590
5%
-
660
448 590
470 620
;t
;z 17
22
30. 21
f :, 19
22
g
18
690
610
610
!E
15
19
610 560 640
E
% 1000
850
16
200
:: 15 20
::
16
1000 950
14 14
15
- 16
-
850
16
:6’
Ab) Bend’) KVQ Test Max D
J MflX
(11) (12) - 0’5 a
-
-
-
-
- -
-
-
-
-
-
-
- -
2a
4a
4a
3a
-
-
3a
-
3a
- -
-
3’5 a
-
- - -
-.. of Treatmdnt mm RB
Up to aod’ Including
(5) 16 40
1:; 150
G
1:: 150 -
(‘3) -
-
HFaN -
16
:; 100 -
-
- -
16
z 100 - 16 40
1::
- - -
-
- - - 16
:: 100
255 -
-
- - -
- -
200
250
100 200
200
-
- - - -
-
-
205-250
-
241-269
900
-
At the average
200 do
600 220
-Miin MPa Bend’)
Steel bver
(4) 3
16
: 100
3
z
1: -
3
2 63 -
- -
3 16
tB
3 16
E!
- -
1:
2
- - - - - -
-
loo -
-
-
- -
410
360
460
(1) 1 Plate (2)
(3)
N (7)
205 195 185 175 170 225 215 205
:z
215
265
260 250 250
Note 8 250
205 205 355 345 345
Note 8
:z 305 305
Note 8
440
440
380 415
510
410 375
275 285 285 285
Note 8
560 540
460
460
275 135 275 275 335 135 390 635
550
460 410 490
% 410 590 850
700
700 850 635 800
680-780 800
420 630
500
550 450
630
El
2 Plate
Quadrangular seamless pipe
Seamless pipe and pipe with seam
Seamless pipe and pipe with seam
Seamless pipes, steel plates
N
N
N,N+T
Bars, forgings Q+T Tuber N+T
Tubes N+T Steel plates N+T
6 7
8
Pipes Plates
9
Bars, forgings
Pipes Plates
N+T Q+T N+T N+T
10
Bars., forgmgs
Pipes
Bars, forgings
Pipes
Bars, forgings Bar?, forgmgs
Bars, forgmga
Bars, forgings
Forgings of tur- bine shafts
N+T Q+T A N+T M+T Q+‘JJ
11
ii 63
2”: -
-
-
12
13 14
15
16
17
:+T Q+T Q+T
- - -
Q+T -
Q+T
N+T
- 18 Bars, forgings
2s 1570 ( Part 7 ) t 1992
Table 3 ( concluded )
TS-- Pr0dlWt
Bend’) Steel
(1)
19 (2)
Bars, forgings plates
Bars, forgings
(3)
A
20
21
22
Bars, forgings
23
24
25
Bars, forgings
Bars, forgings plates
Bars, forgings Seamless pipe
Bars, forgings
Tubes, forgings plates
Q+T
Q+T
Q+T
Q+T
Q+ ‘G Q+ Ta
Q+T
Q
26 Tubes, forgings plates
Q
27 Pipes, ban forginga plates
Q
28 Tubes, platen Q
29 Pipes bars, forgings
30 Pipes, bars, forgings plates
Ql Q¶
Q
31 Bars, forgings pipes
hot cold worked S+P
32 Bars, forgings pipes plates
S+P
Heatl) Tkicknese Hudnesst~ ow Treatment mm RR “Rr*
e-d-* ---- I& her
(4)
0;
05
Up to and ’ Including
(5)
160 25
160 25
75
150
1560
250 250
250
(6) (7) (8) (9) (10) - 265 470 670 20
175-235 420 590 780 16
> 192
0’5
-
3 40
3 30
3 40
3 40
-
s 40
5
0’5
285-331 280-330
255-280 265-310
265-310
490 680
585 770
785 930 785 930
590 780 700 900
750 900
195 490 195 490 40
63
30 50
40 63
-
::
60
100
250
63
- 175 175
- -
- -
-
205 205 205
185 185
175-235
-
155 195
205
‘2::
398
220
490 440
510 490
490 448
E
510 490
600
500
248-341 600 900
Rm4) % MPm Min
‘Mh M&
880
930
1 130 I 130
930 I 050
1 050
%
690 640
710 690
690 710
710 690
808
730
ll60
20
15
$
14 II
10
!8 45
El 45
30
::
30
4:;
30 30
30
3:
25
35
15
A5) KW Max
J
(11) 60
40
25
40
27 20
20
-
55
70
40
Bead’) Test
Lx
( 12)
-
-
11 A = Annealed, N = normalised, Q- quenched, T - tempered, S = solution treated, P - precipitation hardened. HF= hot finished
s) In case of dispute, the tensile strength value is deciding.
s, Rp 0’2 = 0’2 O/e proof st?ess.
4) Rm= tensile strength.
w AP elongation after fracture. In case, of bars the values are valid for test pieces with a gauge length of Lo = 5’65 z/S%( So 3 original cross-sectional area ). In the case of flat products, the values are valid for both test pieces either of 20 mm width and 80 mm gauge length or of 12’5 width and 50 mm gauge length.
sl Average of three test results. One individual value may be below the specified value provided if it is not less than 70% of that value.
‘71 KV = impact energy of V-notch teat pieces.
s) Drnaa = maximum diameter of mandrel, a - thickness of teat piece.
91 For thickness > 63 mm but < 100 mm, the value specified for the thickness range > 40 mm but < 63 mm are lowered by 1% for each 5 mm thickness over 63 mm.
6
Table 4 Proo~Stnss at fievated ‘femperatmrem ( @‘or Gui&ace Oaiy i
( Claus 2.4 )
TJ-JP”
Steel
Product lid’) Thickness Treatment
Rp 92 Mftt in MPa at Temperature ‘C mm ------
‘loo 158 280 250 300 500
(14)
139
550 608 650 700 750 800 ,
(61 (7) (8) (9)
-
187
234
237
172 168 150 169 162 144 158 152 141 148 144 136 200 195 174 192 185 165 182 175 162 170 166 157 176 165 145
223 212 195
232 218 200
240 270 210 259
lack of data
230 220 210 259 248 237 200 192 180 248 235 218
108 261
98 363 630 530 670 630
99 92 85 253 245 236
88 79 78 348 334 330
610 500 635 615 lack of data
330 350 460 440 508 480
235 410
to be agreed upon 246 225 380 345
350
(11) 117 117 117 117 137 137 137 137 111
162
153
169 203 135 184
76 224
76 322
336 400 440
400 450
(12) (13) 115 115 115 115
tz 133 133 109 107
159 156
148 143
(15) 06) (17) (18) (19) (20)
164 161 156 151 146 199 194 188 181 174 130 127 124 120 117 177 168 155 148 135
72 69 218 205
75 74 316 311 525 498 410 380 540 506 525 480
:7: 337; 410 380
205 195 305 285
66
189 167 145
71 290 235 456 350 460 403 435 -
350
185 175 - -
-0lW
(4) 3
16 40 63
1:
48 63
-
-
-
-
108
up to ami Including
(5) 16 40 63
100
3 63
180 40
48
40 60
-
-
900
100 500
- -
(1) (2) 1 Plate
(3) N
2 Plate N
Seamless pipes and pipe with seam
Seamless pipea and pipe with scam
Seamless pipes, bars, forgings ateel plater
Tubes Tubes Steel plates Pipes Plates Bars, forgings Pipes, platea, Bars, forgings Pipes, bars, forgings
HF, N
HF, N
N,N+T Q+T
d 6 7 8 9
10
11
12 Pipes
13 Bars, forgings 14 Bars, forgingr 15 Bars, forgings
16 Bars, forgings 17 Forgings
N+T N+T N+T N+T N + T, N+T, Q+T N+T, N +T N+T, Q+T A N + T, N+T,Q+T A N+T Q+T Q+T Q+ J-1 Q+ T, Q+T N+T
18 Bars, forgings N+T
19 Bars, forginga plates A Bara, forgings plates Q+T
(10) 124 124 124 124 145 145 145 145 122
177
167
183 116 150 192
80
230
77 326 575 468 598 580
Table 4 ( concluded )
_---_-- Rp 0’2 Mist in MPa at Temperature “C ------h -- T”
Steel
Product
(1) 20
21
22
23
24
25
26
27
28
00 29
30
31
32
(2) Bars, forgings
Bara, forgings
Bars, forgings plates
Bars, forgings
Seamless pipes
Bars, forgings
Tubes, forgings, plates
Tubes, forgings, plates
Pipes plates bars forgings
Tubes, plates
Pipes bars,
forgings
Pipes bars, forgings, plates
Pipes bars, forgings
Pipes, bars, forgings, plates
Heat’) Treatment
(3)
Q+T Q+T Q+T Q+ TI Q+ TI QfT Q
Q
Q
Q Ql QI Q
Hot cold worked s+p
s+p
Thickness mm
r--.~-- Over
(4)
-
-
-
-
-
-
-
Up to and’ Including
(5)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
’ 100 150 200
(6) (7) (8)
480 450
575 555
680 655
560 530
650 600
730 700
132 120 109
lack of data
155 144 132
lack of data
107 103 97
148 144 139
171 162 153
383 373
210 195
590 570
250
(91
180
121
94
134
149
306 350
(10) (11)
410
535
650
480
550
655
93 87
113 107
90 85
130 124
139 133
324
176
555
400 450 500 550
(14) (15)
330 -
450 -
505 400
335 280
390 330
470 480
79 78
600 650 700 750 800 ; ID
(12) (13)
380 360
510 480
610 560
420 380
485 440
580 530
84 81
(16) (17) (18) (19) (20) ,”
250
205
258
315
76
101 89 95 92 90 89 88
80 76
119 114
129 125
275 250
157 155
535 520
74 73
111 107
123 122
226 197
152 143
510 498
72
104
120
71
101
70
99
167
137
465 425 375 305 225
1) A E annealed, N = normal&d, Q = quenched, T = tempered, S = Solution, P = precipitation hardened.
Table 5 Heat Treatment11
( Clause 2.2 )
Tzfpe
Steel
Heat Normalisation Treat_ r--_ _----_-h__----.y ment Tempe- Time of Coolings) Svm- rature Y: Holding
0)
1
2
(‘4 (3)
N 900-930
N 890-920
3 and 4
HF, N 880-940
5 N 900-940
N + T 880-930
9 N + T 900-960
., at Trmpe-
rature
(4) (5)
1 to 2 min In quiet per 1 mm air
Thickness of In quiet plate btrt not air less than 20 min
1 to 2 min In quiet per 1 mm air thickness of pipe wall hut not lens than 20 min
1 to 2 min In qlliet per 1 mm air thickness of forging or pipe wall but not less than 20 min
1 to 2 min In quiet per 1 mm air thickness of plate hut not less than 20 min
1 to 2 min In quiet prr 1 mm air thlckue>s of forging or pipe wall hut not le::s thau “:l !,,ir,
Tempering Stress Relief of Quenching and Tempering --------A-.-- -- Annealing or r_--.--_-- -h_ __.__ -. --7 Tempe- Time of Tempering after Quenching Temperings)
rature Holding Bending or #----A_ - _~ c--_-h---7
“C at Tem- Welding Tempe- Cooling Tempe- Time of rature Holding perature T-_-h___~
Tempe. Time of rature Holding
“C Trmpc- raturc
rat&e “C “C at ‘Tem-
perattIre
(6)
-
(7) (0) 1,‘))
- 600-650 2 min per 1 mm
- - 6OO-GSO Thickness of pla*e but not less than30min
- - 600-6.50 2 min per 1 mm
- - 60~650 Thickcvss of pipe wall bllt not less than 15 min
600-650 1’5 to 2 min 600.6.50 per 1 min thickness of pipe wall
do
600-650 1 to 3 min 600-650 2 min per per 1 min I mm thick- thickness ness but not but not less less than IS than 15 min min
6.10-720 1 to 3 min 660-710 2 min pvr per 1 mm 1 mm thick- thickness ncss hut not hut not 1~ ss Irss thau 15 than 1 ‘> m in miu
(10)
-
-..
-
900-940
-
W-IO-‘WI
(11) (12) (13,
- - -
Oil 6OO-NO - or
water
Table 5 ( concluded )
Type of
Steel
(1)
10
11
12
13
14
15
16
17
18
19
Heat Normalisation Tcmpcring Stress Relief of Quenching and Tempering Treat- r-------- _L_________~ ~_.__-__n__-... ~ Annealing or r-_ -_-----A.___,._ _-._ --_ meat Tempr- Time of Tempe- Time of Tempering Sym- rature “C Holding at
Coohugs) rature Holding after Bending
Quenching Ternprrings) _____h--__-_ ---__ *_-___
b&k’)
(2) (3)
N + T 930-980 Q+r
N + T 900-960 Q+T
A __ 850-950
Tempera- ture
“C
(4)
I to 2 min per 1 mm thickness of forging or pipe wall but not less than 20 min
(5) (6)
For pipes 670-720 in quite air, for forgings of 50 mm thickness in quiet air, above 50 to 100 in compres- sed air and above 100 mm in oil
1 to 2 min per 1 mm thickness of forging or pipe wall but not less than 20 min
do 650-780
1 to 2 min Air 700-800 I to 3 min 760-820 2 min per per I mm 1 mm thick- thickness ness but not but not less less than 15 than 15 min min
N + T 900-f 000 per 1 mm thickness of forging or pipe wall but not less than 20 min
Q+T -
Q + T 900-950 - Air
Q+T+ - - - Q+T* - -
Q+T - - -
N + T 940-970 -_ Quiet air
at Trm- perature
(7’
min 3 h
or Welding- ~---_L---~ Tempe- Time of rature Holding
“C Tempe- rature
(8) (9)
688-740 -
1 to 3 min 730-760 2 ruin per per 1 mm 1 mm thick-
thickness ness but not but not less less than 15 than 15 min min
- - - -
380-680 - 480-650 -
- - - - -
- - - -
690-760 - - -
N + 1’ 970-990
&+T 700-780
- Quiet air 680-700 - - -
- Air - - - -
Tempe- rature
“C
(‘0)
975-l 000
930-l 030
-
Cooling’ ‘Tempe- Time of rature Holding
“C at Tem- perature
(11) (12) (13)
Oil 730-750 -
Oil 650-760 - 08.
water
- -
840-870
920-980
Oil 600-700 -
Air 680-740 min 2 h Oil
880-950 Oil 670-720 - 940-970 Oil 600-700 -
- - -
870-900 Oil 600-700 ruin 2 h
950-I 000 Air, 700-750 min 2 h Oil
20
21
22
23
24
25
26
27
28
29
30
31
32
33
Q+T - Q+T - -
Q+T - -
Q+TI - -
Q+T2 - -
Q+T - -
Q -
Q -
Q -
Q -
g: z Q -
Hot cold - worked at about 750°C
s+p -
s+p -
- - -
-
-
-
-
-
-
-
-
- -
-
-
-
- -
-
- -
-
-
-
- - -
-
-
- -
749-780
740-780
-
-
-
-
-
-
-
-
-
-
-
-
970-l 020
1 050 f 10
1 035-I 065
1 020-l 070
I 020-l 070
I 109.1 159
9W1199
950-I 109
I 100-l 100
850-l 109
1 070-I 140
950-I 070
950-I 190
1 109-l 150
980f 10
Oil 650-750 min 2 h
Air, 650-700 oil
Oil 600-700
Air, 680-746 oil, water
do 649-790
Air, 670-750 Oil
Oil, - air, water
Air, - water oil
Air, -
$;p;JJ;; ,
Air, water - oil
do -
do -
Air, water - oil
-
-
min2h
min 2 h
min 2 b
-
-
Air, 759-800 - water
Oil, 720 f 10 - water
l Q + Ts would apply to sixes up to 100 mm, Q + Ta to sizes above 100 up to 200 mm.
1) Except in cases where test samples are to be reference heat treated, the indications in this table are for guidance only.
1) A = annealed, N = normalird, P = precipitation hardened, Q = quenched, S = aolution treated, T = tempered.
s) If a stress relief treatment is necessary, the stress relief temperature should be at least 30% lowar than the temperiog temperature.
‘bble 6 Stress Rupture Properties at Eievatd Temperatures ( For Guidance Only )
( Clam.9 2.4 )
=oT He*t Time EmtJmrted Average Stress for Rupture’), IMP=, Temperature “C Treat_ HO-m ----- _ -__--_--_--- e--_-w--w- h-----------__-__-.--~-~-~~-_-____~
Steel mcnt 380 390 400 410 420 430 440 450 460 470 480 490 500 510 520 530 540 550 560 570 580 590 600 S)%lhOl
(1) (2) (3) (4) (5) (6) (7) (8) (9) (IO) (11) (12) il3) (14) (15) (161 (17) (18) (19) (20) (21) (22) (23) (24) (25) (26)
1 N 10000 213 197 166 151 138 125 112 and 30000 192 176 tz 147 133 120 lo7
iii ‘ii ;z
67 l 3E
2 50000 183. 167 152 138 125 112 100 77 66 50. :2* 35. JO0 000 171. 155. 141* 127t 114. 102. 90. 78. 67’ 57. 47’ 36. 150000 164’ 149. 134. 121+ 108’ 96, 84’ 73. 62. 52. 41. 29. 200 OCK) 159. 144’ 1305 116. 104’ 92. 80. 69’ 50’ 48. 37’ 23’ 250000 155. 140’ 126* 113’ 101. 89. 77. 66. 55’ 45. 34’
3 N
is 4 N
HF
10000 221 30 000 192 50000 181.
100000 164’ 150 000 153’ 200 000 146. 250 000 1402
201 175 163. 145.
t:S* 3 l
123.
181 164 148 157 140 124 145’ 128. 112. 127. llO+ 940 1195 101. 84’ 111+ 93’ 77’ 1042 86. 72*
132 IOU 97’ 7Y’ 71. 64’ 59.
118 9.t 82. 68. 59. 53. 49.
104 81 701 56’ 48. 44* 401
91 ii: 68 59 51 70 51. 43+ (36)* 5Y* 50* 43. 365 (30)* 46+ 3Y* (33)* 40. (34)* (28)’ - -
(36)* (30)* (33)* (27)* - 1 r
5 N N+T Q+T
8 N+T lack of data
9 N+T Q+T
10 000 30 000 50 000
100 000 15olmu 200 000 250 000
10000 279 30000 251 50 000 237
100000 211, 150000 196. 200 000 185’ 250 000 177.
10000 30 000 50 000
100000 150000 200000 250 000
254 224 206 182*
;i;+ l
156+
229 206 197 174 179 158 157’ 135’ 144. J24* 135+ 114* 127* 106.
fE 137 117. 104. 95+ &8*
163 133 119 100+ 87. 79. 75.
145 117 103 aa+ 75* 692 64’
127 101 88 83+ 66+ 59f 551
298 273 2602 239’
;:g
210+
113 100 88 78 71 88 i: 68 60 (52)
E* 59 (52) (45)
50, (45)’ - - (56). (48)‘. . - - (50)*, - - - - (46)+ - __ - -
273 247 220 196 171 147 244 216 187 150 134 113 229. 208’ 172 144 119 99 208’ 178+ 140* 123+ 101 81 197. J68* 139* JJ4* 91. 74+ 188. 159* 130+ 105* 84’ 69+ lOO+ 151* 124+ lOO+ 68* 65.
304 273 239
267 233 239 207 :z 210 177 146 194* 161+ 132. 180+ 148’ 122* 170* 139’ 114.
209 i69 149 121 108’ 99. 91’
125 102 82 64 93 76 61 49 80
& 48’ (39P - 55+ 45’ (36jS - 52. (42). (33)* -
179 154 129 109 91 76 64 53 44 140 I16 96 79 66 54 44 36 (29) 124 101 82 68 55 45 - - - 99 81 67 54 43 35 - - - 07* 71 57 46 38 (31) - - -
:;: 64. 59. 52+ 48’ 42, 39+ 34+ 32* (28)* (26)* - - - - - -
fS 1570 ( Pmrt 7 ) t 1992
Table 6 ( ronhud ,
Type Hed Tfmt EstIm.tcd Arrngc Strms for RuPawr% MPm, Trmpcr.tmre “C of Tre.t- Holrs ~_--~--_---__---------.----___-----------
stcc, rmC¶lL 380 3% 4oa 410 420 430 440 *----- _____ - _.-_____ ___-________________ ,
4% 4Ml 470 4ao 4% 500 510 520 530 540 55o 560 570 SylUbOl
590 590 6oo 610 620 690 MO 650 660
(I) (2) (3) (4) (5) (6) (7) (R) (9) (IO) (11) (12) (19) (14) (15) (16) (17) (la) (19) (20) (21) (22) (23) (24) (25) (26) (27) (28) ,(29) (30) (91) (92)
610 620 690 640 650 660
IO N+T IO ooo
Q+T 9OCGl 929 268 241 219 198 179 I64 148 194 121 loa 95 78
Mooa 261 292 209 I87 1% I52 195 I21 107 99 80 67 Go)
loOOOO 249 217 193 172 I59 I96 I21 107 92 78 66 - -
15oooo 2la I91 170 I50 191 116 loo a5 72 59 (46). - -
2ooooo 205 179 156 I96 II9 101. 85. 70. 57’ (45). (95). - -
25ilm 194. 169’ 146. 127* 109. 9l* 76. 6l* (48). (37). (28). - -
185* 160* 19w ll9* 1010 890 6a* 54. (42). (92). - - _
I1 A IO ooo 25,* 2368 221. 2% I91 177 I62 I47 199 121 lo8 96 a5 76 68 61
N+T 30000 226* 211 I%* IllI 166 I53 139 126 II9 lol a9 78 70 61 54 48
5oow 211. 197. IaS* 170’ l56* 142. 128. 1160 104 32 a1 71 62 54 47
looooo 1%. 182. &a* 154. 141. l27* IW ,020 99. 70. 69. 59 51 44 (3s). ($
15OOOO 193. l77* 161. 145’. 129. 116’ 109. 91. 79’ 71. 620 54. 46’ 408 (35). Pm*
2oomnl I%* 170. 154. 1980 123. 1100 970 85. 75* 66. 580 50. 49. (97). (92). (28).
25ooflo lal* 165. I49* 132. lla* 1050 99. aI* 72. 69. 54. 47. 40’ (95). (3o).’ (26).
N+T IO 0% 309. 285. 263. 240 219 196 I76 I55 137 122 lo8 % a5 76 68 61
30 ml 276* 2549 239* 219 192 172 I52 194 II8 IO9 90 79 70 61 54 48
Mew 257’ 2%. 217. 197. 1778 I%* l99* 123. l07* 99 80 71 62 54 47 42
Q+T IMIOOO 221. 20). l%’ l70* 159* l97* 122. l07* 93 79 69 59 51 44 (38) (34).
15OKlJ 209. 1920 175. 1%. 141. 126. llO* 95* 82. 73* 638 54* 47 40 (33) (SOP
2wooo 209. I%* 169. 152. 134. 119* 109* 89. 77. 68’ 588 50. 43 (97). (32). (28).
25ooccl I%* laI* 164. 147* I%* 113* 98. 848 749 64* 55. 47. 41. (35)’ (90). (26).
12 A 10 ooo Iai I61 I42 127 I12 99 a6 76 67 58
3oocm
50 (44). (38) 39 28 25
139’ 137. 121. IO,* 90. 79. 69* 60. 520 45. Sa* 99.
5oooa
28’ 25. 228 19.
1470 1270 Ill* 950 a2* 739 620 590 46. 99. 39’ 28. 25* 21. la* (l6)*
IOOWO 131. 119. %* 83. 72* 62* 59. 45* 380 92. 27. 23. 20’ (17). (II). (II)*
1500% 123. 105. 90. 76. 65. 56. 478 408 939 280 24. 21. (17). (15). (19). -
2ooooo 116. 99’ 84. 72* 61. 52’ 44. 97* 91’ 25. 22. 19. (16). (14). - -
2xlrml III. 95. ao* 6a* 5a* 498 41. 340 280 2.50 210 (17). (15p - - -
IO wo 224 199 177 157 198 I21 I04 91 79 69 60
90 ooo
51 ti 3a 33 28 z5
197. 174. 142. IS3 II6 1% a5 74 63 54 46 99 34 29. 26.
Moo0
220 (lap
185. l62* 141. 129. I%* 90. 77’ 67. 57. 47. 41. 33. 29. 25. 19. (la). (16).
moooo 167. 144. 124. I%* 910 780 66. 57e 47. 40. 34* 2a* 248 21
l5OOlW
(17). (15). (12).
156. I%* 117. I%* 85. 74. 62. 52. 43* 36* SO* 30. 25. 22. (la)* (16). (13)
2ooooo 150’ 129. 111. 94. 80. 69. 57* 48. 40* 33’ 27.
2Moml
24’ 20. (17). (II)* - -
145. 125. 1%. 90. 76. 65. 54. 43. 97. 31’ 26* 22. 19. (16). (IS) - -
17 and IO ooo 370 452 434 412 9% 961 991 2% 262 235 210 la5
I8
169 I41
IM)o% 944 374 352 928 309 271 218 219 la7 159 194 II2 94 75
13
IS 157lJ ( Part 7 ) I 1992
Table 6 (confinutd )
VP”
Stnl
(1)
13
14 QfT
I5 QfT
I6
19
Q+T
A
Q+T
20 Q+T
21 Q+r
22 Q+T
23 Q+ TI Q+ T,
24
31
Q+T
Hot Cold
Worked
s+p
32 S+P
Tima liowu
(3)
10 O@l
100000
10 ml lOOMlo
10 000
100000
10000 100000
10 000
lOoOel
10000
10 000
IO 000
100 OI
10 000
IwO%
IO 000
10 co0
lOOOO+l
IO 000
10 wo
355 230 I40
2aa 170 74
lack of data
123 - 29
78 - 25
1wr w, 40’) 80’) 5eJ 25’1
137 36 39
4%
373 289 165 79
221 1% 44
347 245 137
16-S
579 441 324
(a) (9) (10) (II) (12)
478 247
347 136
405 2a2
323 la5
494
371
2%
170
4a0
432
59
109 74 45
196 98
5%
(13)
90
600
(14)
163
93
127
191 123
2w1
12(r) 130’) 75’)
98
2ca
157
102
211
137
274
373
284
69 47
w,
45’)
2%
270
347
215
3%
275
392
460
392
44
92
96
57
103
59
157 69
226
137
191
608 4% 363
(15) (16) (17)
127 68 68 29
I35 ml
216 127
67
14
Table 6 ( roncludtd )
IS 1570 ( Part 7 ) : 1992
“‘P’ Hat Time E.tlmnerd Avemge Screw for Rupt.te’,, MPa, T*mper.twe “C Trmt- HO_” _________-_-e-e--- ---- - ------ --- ---* -- - r_ ___ --------.-_-_-_--__-___._____ _____
Steel meat 610 620 630 640 650 660 670 680 690 700 710 720 p--7
730 740 750 Symbcw
(1) (21 25 Q
26 Q
27 Q
28 Q
29 Q
Q2
30 Q
(3) IO coo
2Qom
5oow looooa
WJOM)
2oowl
25om
IO CQO
30 OOQ
5olm
lrmooo
15ooim
mooo
25oUoo
(4)(5)(6)(7)(8)(9)(10)(i1)(l2l(l3)(1))(15~(~6)(l7~l~8)~lQ1~2") 121) (22) (23) (24) (25) (26) (27) (28) (29) (30) (31) (32) (33) (34) (35) (36) (37) (38) (39) (.Io) 141) 176 l6& 157. I42 131 122 113 104 95 87 79 73 67 61 55 48
147. 135. 126. llS* 105. 96' 88. 80' 74' 67. 61 55 50 44 (40)' 05).
134. 1239 113. 103. 94. 85. 709 72' 65. 58. 52' 47' 419 (36)* (82)~ (27).
115. 105. 98* 89. 81. 74* 68. 61. 55. 50. 45. (40)' (35). (30). 126)' 123).
108. 99. 89. 81' 748 67* 6O* 54s 49. 43' (39). (34). (30). (36)' (231' (20)'
102. 93. 84' 76* 69. 62. 56. 50' 45. (40)' (35). (31). (27). (24). (21,. -
978 88. 79. 73. 66' 59. 58‘ 478 428 (37). (33). (29). (25). (22,. - -
lack ofdrtn
260 245 228 211 195 179 I64 149 136 123 III 91) 89 8o 74 65 59 53 48 44 39
243 224* 204. 187* 171' 155 139 125 II2 IO0 89 79 72 64 57 51' 46 41 378 33* 30*
226. 208' 192* 175' l58* 142 128 II5 103 91 80 72 63 56* 50 45' 40' 36' 32. 29. (26). 1%' ,800 160' 147* 132. 118; 106. 96' 86* 76* 69. 6Q* 53. 46' 41* 37' 33; 30* 27* (25,' (?3)*
l87* 171. l52* 139. l24* 110' 97. 86. 76. 68* 60. 53. 47' 41* 36; 3L* 28' (25). (24). (2,). -
l8l* l65* 146' 1339 116' 103. 91. 8o* 71. 63. 56* 498 43* 38* 33' 29. (26)' (24)* (22)* (20)* -
1768 159' 14V 1279 110' 97. 86* 76. 67. 59' 52* 46* 40* 35* 31' 28' (25)' (23)* (21)' (19;* -
Iackofdata
197 182 170 157 145 134 124 II4 lo4 95 86 77 (70)' (63)
167' I.54 I42 130 120 109 99 90 82 75 (67)' (60,. (53)' (47)*
1548 142. l3O* 120. 110' 100' 91* 828 75* (67)' (6U)' (54)* (47). (42).
137' 126. ll6* 1%. 97* 88' 788 71. (64). (57). (50). (44)' (39). (3~
130* 119‘ 1o9* 99* 89* 80. 73. (65). (57). (XX* (44)* (38,' (33)* -
125. 113* 103. 93. 84' 76' (68)* (60)' (53). (46)' (4O)* (35). (30). -
120' iOQ* 99. 89* 800 72. (64)' (57). (50). (43;* (37); (32)' - -
I85 170 156 142 130 120 II0 lol 92 82 74 65 (S7,* (48)*
154. 141 128 118 107 98 88 79 71 61 (53)' (46) (40)* (34)*
l39* 127* ll7* l07* 978 87* 77. 698 6O* (52)' (44). (37). (37)* (27)*
l23* ll2* lO2* 92* 8L* 74* 64' (55). (47). (40,' (36). (31)' (27). (23)'
112' 102. 93* 83' 738 64. 55* (47)' (41)* (35)' (30)* - - -
106' 968 86* 76* 67* 589 (50)* (43,* (37). (32)' (27)' - - -
lOI* 92. 818 72' 62. (54). (46). (40)' (34). (29)' - - - -
243 228 215 2M) 186 173 159 146 134 I24 II4 104 95 86 77 69 61 54 46
210. Isa I84 172 I59 I46 133 123 112 102 92 83 74 66 58 51 44 38 (33)
1%. 185. 172. 159' 146 133 123 III IO1 91 82 74 66 58 5, +I 39 (33)' (28)
l8,* 168' 154. 142. 129' 118 106 96 86 77 69 61 53 46 40' 35. (30)' (25). (22).
l7l* l58* 145' 132' 121' 109. 98* 88* 7')* 76. 639 55. 48' 42' 36' (32). (28)* (24). -
1609 l5,* 138' 1279 ll4* 103* 938 831 75' 66* 58* 51. 4t* 38. (33)' (29)' r25i* r22)* -
159' 146. 133' 122. 110' 99* 88. 79' 71* 63' 55. 48. 41 36* (31)' (271' - - ,25,*
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This Indian Standard has been developed from Dot : No. MTD 16 ( 3335 ).
Amendments Issued Since Publication
Amend No. Date of Issue Text Affected
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