MATERIAL

CHEMISTRY

HEAT TREATMENT DETAILS

AISI/
ASTM

EN

DIN

JIS

C

SI

Mn

Ni

S

Cr

W

Mo

V

Anealing
(Slow Cooling)

Quenchent
(Hot Bath)

Quenching

Tempering
(Air Cooling)

Annealed
(HB) - Max

Quenched
(Hrc) Tempered

P20 

40CrMnMo7 

1.2311 

 0.4 

0.3

1.5

0.002

1.9 

0.2

720-750 

OIL/AIR 

850-880 

600-680

240 

300

P20+Ni 

40CrMnNiMo864 

1.2738 

0.4

  0.3 

1.5

1.1

0.002

2 

720-740 

OIL/AIR 

850-880

240

P29+S 

1.2312 

 0.4 

0.3 

1.5 

0.07

1.9 

740-760 

OIL/AIR 

840-870 

240

36CrMo17 

1.2316 

0.36 

0.4

0.65

1

0.002

16 

1.2

780-820 

OIL

1000-1040

235

420 

42Cr13 

1.2083 

SUS420F

0.42 

0.4

0.45 

0.002

14 

840-870 

OIL

200

53HRC 

PLASTIC MOULD

AISI

DIN

Supply Condition

Rounds

Square

Flat

Application

P20 

1.2311 

Hardened & Tempered 

75 - 300 

200X40 - 1000X600 

Steel suitable for die upto 400mm thickness with very good polishing. 

P20+Ni 

1.2738 

Hardened & Tempered 

75 - 300 

200X40 - 1000X600

Best suited for 400mm thickness. Adding 1% Nickele ensures full quenching and tempering upto 1000mm thickness

P20+S 

1.2312 

Hardened & Tempered 

75 - 300 

200X40 - 1000X600

It offers better workability. Applications are same but less requirements of polishing. 

420mod

1.2316 

Hardened & Tempered 

50 - 160 

200X40 - 1000X250

Well suitable for processing chemically aggressive and acid releasing plastic such as PVC. 

420 

1.2083 

Annealed 

300X60 - 500X250

Moulds for processing plastics with corrosive action, very highly polishable.