| AISI 8660 | |
![]() | |
| Conditions | Hardness | ||
| T (°C) | Treatment | Method | Value |
| 25 | oil quenched, fine grained, tempered at 205°C | HB | 580 |
| 25 | oil quenched, fine grained, tempered at 315°C | HB | 535 |
| 25 | oil quenched, fine grained, tempered at 425°C | HB | 460 |
| 25 | oil quenched, fine grained, tempered at 540°C | HB | 370 |
| 25 | oil quenched, fine grained, tempered at 650°C | HB | 315 |
















