DIN |
AISI |
JIS |
GB |
1.2738 |
P20Ni |
- |
3Cr2NiMnMo |
Chemical Composition(DIN 17350)
C |
Si |
Mn |
P≤ |
S≤ |
Cr |
Mo |
Ni |
0.35 |
0.20 |
1.30 |
0.035 |
0.035 |
1.80 |
0.15 |
0.90 |
0.45 |
0.40 |
1.60 |
2.10 |
0.25 |
1.20 |
Steel Properties
It is supplied hardened and tempered to 950-1100 N/mm2. Good machinability, excellent polishability, suitable for texturing.Improved through hardenability compared to DIN 1.2311.
Applications
Synthetic plastic moulding dies,for large moulds.
Heat Treatment
Soft Annealing(℃) |
Cooling |
Hardness(HB) |
Hardening( ℃ ) |
In |
Hardness(HRC) |
710-740 |
Furnace |
Max.235 |
830-880 |
air,oil,thermal
bath 180-220℃ |
52 HRC |
Tempering ( ℃) |
100 |
200 |
300 |
400 |
500 |
600 |
700 |
HRC |
52 |
51 |
49 |
46 |
42 |
36 |
28 |
N/mm2 |
1790 |
1730 |
1620 |
1480 |
1330 |
1140 |
920 |
|