Austenitizing
Belt furnace. Time in furnace according to the table.
| Thickness | Thickness | Time |
|---|---|---|
| mm | in. | 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 |
|---|---|
| 60 HRC | 175oC (345oF) |
| 58 HRC | 225oC (435oF) |
| 56 HRC | 350oC (660oF) |