Austenitizing
Belt furnace. Time in furnace according to the table.
| Thickness, mm | Thickness, in | Time, minutes |
|---|---|---|
| 2.5 | 0.100 | 5 |
| 3.0 | 0.118 | 6 |
| 3.25 | 0.128 | 7 |
| 3.5 | 0.138 | 8 |
| 3.75 | 0.148 | 10 |
| 4.0 | 0.157 | 12 |
| 4.9 | 0.192 | 25 |
Quenching
Quench as rapidly as possible. For optimal results 600°C (1110°F) should be reached within 2 minutes or less.
Deep freezing
The material only needs to reach the desired deep freezing temperature, no soaking-time is required.
| Hardness | Temperature |
|---|---|
| 59 HRC | 175°C (345°F) |
| 57 HRC | 225°C (435°F) |
| 55 HRC | 350°C (660°F) |