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Temperature should be equalized at 850oC (1560oF) 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.

Deep freezing

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

Tempering, 2 hours
Hardness Temperature
62 HRC 175oC (345oF)
59 HRC 225oC (435oF)
57 HRC 350oC (660oF)