| C | 1.50 to 2.20% |
| Si | 0.80 to 1.00% |
| Mn | 0.80 to 1.00% |
| P | 0.04 %Max |
| S | 0.07% |
| Cr | 12.0 to 14.0% |
| Mo | 2.0 to 2.50% |
| Ni | 0.50% Max |
| HARDNESS | HRC 32-38 |
| C | 2.3 to 2.5% |
| Si | 1.5% Max |
| Mn | 0.75% Max |
| Cr | 27.0 to 30.0% |
| W | 14.0 to 16.0% |
| Fe | 10.0 % Max |
| Ni | Remaining |
| Hardness | HRC 38-48 |