Hot Rolled DIN1.2312 / 40CrMnMoS8-6 / P20 steel Plate With Thickness 14 ~ 100 MM
Description:
1.DIN1.2312/AISIP20+S/718/40CrMnMoS8-6 mould stee
2.Hot rolled or forged condition, Pre-harden &tempering , black surface
3.Hardness: 30~36HRC
4. Hot rolled technology:EAF+LF+VD
Forged technology: EAF+LF+VD+ESR+Forging +Q T + Machined surface
5.Production leadtime: 7~10 days
6.Ultrasonic test standards: SPE1921,GR3,Class D/D
7.Chemical composition:
|
Grade |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
|
1.2312 |
0.35-0.45 |
0.30-0.50 |
1.40-1.60 |
≤0.035 |
0.05-0.10 |
1.80-2.00 |
0.15-0.25 |
8.Compared grades(based on usage):
|
GB |
AISI |
DIN |
|
40CrMnMo |
P20+S |
1.2312 |
9 Heat Treatment:
Annealing: 710 - 730 °C
Hardness after annealing: Max. 230 HB
Stress relieving: Approx. 650 °C
Hot forming: 1050 - 850 °C
Hardening: 870 - 890 °C
Quenching media: Oil, Salt bath, Vacuum
Hardness after quenching: 50 - 54 HRC
Hardness after tempering:
|
Tempering °C |
100 |
200 |
300 |
400 |
|
HRC |
54 |
54 |
53 |
50 |
Applications:
Injection dies without special surface requirements and low mechanical stresses, medium and large sized
moulds for plastic processing, dies of light alloys with low melting point, mould fittings, mould frames for the
