Heat Treating Steel Chart
| Steel Type | Hardening Temperature (°F) | Hardening Temperature (°C) |
|---|---|---|
| 1018 | 1550-1650 | 843-900 |
| 1020 | 1550-1650 | 843-900 |
| 4130 | 1550-1650 | 843-900 |
| 4140 | 1550-1650 | 843-900 |
| 8620 | 1550-1650 | 843-900 |
| Steel Type | Tempering Temperature (°F) | Tempering Temperature (°C) | Resulting Hardness (Rc) |
|---|---|---|---|
| 1018 | 300-600 | 149-315 | 40-55 |
| 1020 | 300-600 | 149-315 | 40-55 |
| 4130 | 400-700 | 204-371 | 45-60 |
| 4140 | 400-700 | 204-371 | 50-65 |
| 8620 | 300-600 | 149-315 | 40-55 |
| Steel Type | Austenitizing Temperature (°F) | Austenitizing Temperature (°C) |
|---|---|---|
| 1018 | 1650-1750 | 900-954 |
| 1020 | 1650-1750 | 900-954 |
| 4130 | 1650-1750 | 900-954 |
| 4140 | 1650-1750 | 900-954 |
| 8620 | 1650-1750 | 900-954 |
