Batch hardening deep freezing -70°C/-95°F of Alleima® 19C27 knife steel



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.

Deep freezing

The material only needs to reach the desired deep freezing temperature, no soaking-time is required.

Tempering, 2 hours
Hardness Temperature
63 HRC 175oC (345oF)
60 HRC 225oC (435oF)
58 HRC 350oC (660oF)