40ХГМ / 40CrMnMoS86 / 1.2312

Juostos, kvadratai,
blokai
storis ≥600mm, plotis
≥1000mm

 

Description:

heat treated steel to reach approx. hardness  of 30 HRC, very good machinability (due to no sulphur content better than 1.2311 ), polishability worse than 1.2311

Application:

injection moulds, large bodies and inserts for plastic moulds and pressure moulds, where high polishability is not required

 

Chemical composition [%]
C Mn Si P S Cr Ni Mo W V Co Cu
0,35-0,45 1,4-1,6 0,3-0,5 max 0,03 0,05-0,1 1,8-2,1 0,15-0,25

 

Equivalents
PN W. nr EN AISI Russia (GOST) Other
1.2312 40CrMnMoS86 P20TS M200

 

Processes
nitriding YES
hardening YES temp. 830 – 870 [°C]
tempering YES temp. 480 – 600 [°C]

 

Hardness
after toughening 51 HRC
after softening 235 HB