X155CrMoV12.1 Die Block Steel Chemical Composition - (Typical Analysis in %
| STANDARDS | X153CrMoV12 | HCHCR-D2 | DIN 2379 | AISI D2 | AFNOR Z160CDV12 | JIS SKD10 | |
| C | Si | Mn | P | S | Cr | Mo | V |
| 1.40-1.60 | 0.10-0.60 | 0.20-0.60 | 0.030max | 0.030max | 11.00-13.00 | 0.70-1.00 | 0.80-1.20 |
Physical Properties:
| Coefficient of Thermal Expansion at °C | 10 m / (m*K) |
| 20-100 | 10.6 |
| 20-200 | 11.5 |
| 20-300 | 11.8 |
| 20-400 | 12.3 |
| Thermal Conductivity at °C | W / (m*K) |
| 20 | 16.7 |
| 350 | 20.5 |
| 700 | 24.2 |
| Soft Annealing °C | 840-870 |
| Cooling | Furnace |
| Hardness HB | max. 250 |
| Stress-relief Annealing °C | approx. 660-710 |
| Hardening °C | 1000-1050 |
| Quenching | Air, Oil, Salt Bath 500-550°C |
| Hardness after quenching HRC | 63 |
| Tempering°C after quenching | 100 | 200 | 300 | 400 | 500 | 525 | 550 | 600 |
| HRC | 64 | 61.5 | 58.5 | 58.5 | 59 | 60 | 57 | 50 |
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