Physical properties
4CrW2Si critical temperature of steel is shown in Table 2-17-2.
4CrW2Si critical temperature of steel
4CrW2Si critical temperature of steel is shown in Table 2-17-2.
4CrW2Si critical temperature of steel
| Critical point | Ac1 | Ac3 | Ms |
| Temperature (approximate) / ℃ | 780 | 840 | 315 |
Chemical composition
4CrW2Si steel chemical composition shown in Table 2-17-1.
4CrW2Si steel chemical composition (GB/T1299-2000) w /%| C | Si | Mn | Cr | W | P | S |
| 0.35~0.45 | 0.80~1.10 | ≤0.40 | 1.00~1.30 | 2.00~2.50 | ≤0.030 | ≤0.030 |
4CrW2Si steel thermal processing are shown in Table 2-17-3.
4CrW2Si steel thermal processing
| Project | Heating temperature / ℃ | On forging temperature / ℃ | Final forging temperature / ℃ | Cooling |
| Ingot Billet |
1180~1220 1150~1180 |
1150~1180 1100~1140 |
≥850 ≥800 |
Slow cooling Slow cooling |
