Controlling steel properties through thermal processing
| Process | Temp | Purpose |
|---|---|---|
| Annealing | 750-850C | Softens for machining |
| Hardening | 950-1050C | Austenite transformation |
| Quenching | Immediate cooling | Martensitic structure |
| Tempering | 200-600C | Reduce brittleness |
| Nitriding | 500-550C | Surface hardening |
| Steel | HRC |
|---|---|
| P20 | 28-32 |
| H13 | 46-52 |
| DC53 | 58-61 |
| S136 | 48-53 |