Batch hardening deep freezing -70°C/-95°F of Sandvik 12C27 knife steel
Temperature should be equalized at 850°C/1560°F for 30 minutes to avoid unnecessary temperature variations.
Batch furnace. 30 minutes in furnace.
Quench as rapidly as possible. For optimal results 600°C (1110°F) should be reached within 2 minutes or less.
The material only needs to reach the desired deep freezing temperature, no soaking-time is required.
|61 HRC||175°C (345°F)|
|59 HRC||225°C (435°F)|
|56 HRC||350°C (660°F)|