Hardening of knife blades up to 33 cm

The material thickness at the edge should be at least 0,6mm for carbon steel, and 0,4mm for stainless steel.
For laminated steel, grind down to a maximum of 1mm.

Our heat treatment for knife blades up to 33 cm includes:

• Hardening
• Straightening service
• Deep freezing
• Tempering

Carbon steel is hardened in the furnace without scale protection; the resulting scale is partially brushed off, especially on the blade.

Stainless steel & PM steel are protected in an argon atmosphere during the process and air-quenched, resulting in only a very thin oxide layer.

After quenching, the steel is deep-frozen in a high-performance freezer at -50°C and then tempered.
Rusting laminated steel (carbon steel) is not deep-frozen due to the increased risk of cracking.

During hardening, blades may warp; we will attempt to straighten them, but in extremely rare cases the blade may break. We do not provide any warranty for warping or breakage during hardening.

For more information, please visit our website.