1.2083 X40Cr14

Chemical Composition :

C Si Mn P S Cr

Min. % 0.36 12.50

Max. % 0.42 1.00 1.00 0.030 0.030 14.50

Material Code :

DIN ASTM JIS GOST

1.2083 420 SUS 420J2 40Ch13X40Cr14

Properties :

Martensitic stainless chromium steel for plastic moulds, excellent polishability and corrosion resistance in hardenedcondition, high wear resistance, high compression strength, through hardening, low distorsion, good machinability andphotoetching properties. This grade can be produced on request by the process ESR and quenched and tempered con-dition.

Applications :

Moulds for corrosive plastic materials such as PVC, recycled polymers etc., moulds for chemically aggressive plastics andplastics containing abrasive fillers, mould inserts, dies and gauges for PVC extrusions, screws and barrels for extruders,moulds for automotive, food, medical and optical industry such as spectacles, compact discs, lenses.

Physical Properties :

Density : at 20 C 7,70 kg/dm3 Thermal expansion between : 20 C and... C, 10-6 m/(mK)

Thermal conductivity : at 20 C 22,0 W/(m.K)100 C 200 C 300 C 400 C 500 C

10,5 11,0 11,0 11,5 12,0

Heat Treatment :

Annealing : 810 - 830 C

Hardness after annealing : Max. 230 HB

Stress relieving : Approx. 650 C

Hot forming : 1050 - 850 C

Hardening : 970 - 990 C

Quenching media : Oil, Vacuum

Hardness after quenching : 52 - 56 HRC

Hardness after tempering :100 C 200 C 300 C 400 C

54 HRC 52 HRC 52 HRC 52 HRC

Z ELK TCARET LTD.T.

Ha

rdn

ess

, H

RC

Tem

pera

ture

, C

This grade is produced on request.

Time - Temperature - Transformation Diagram1000

900Austenitizing 980 C

A+K Ac1e

800

700P

90100

100100 Ac1b

F+K6005

500

400

Ms300

200M

100

642 635 627 606 525 234 222 214 209

01 10 102 103 104 105 106

Seconds

Time Minutes1 10 100 1000 10000

Tempering Diagram66

62N/mm2 HB

58 2194

2054

54 1912

1789

50 1677

1575 461

46 1482 436

1399 413

42 1327 392

1263 373

38 X40Cr14 1198 354

1138 337

34Heat treatment :

1080 319

1024 303

30

980 C / Oil

970 286

0 100 200 300 400 500 600 700 800

Tempering temperature, C