Batch hardening with deep freezing -70°C/-95°F of Alleima® 14C28 knife steel

Temperature should be equalized at 850oC (1560oF) for 30 minutes to avoid unnecessary temperature variations.

Austenitizing

Batch furnace. 30 minutes in furnace.

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.

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