H21 tool steel

there are different types of tungsten hot work steels like, H21 to H26 types.

They are resistant to deformity when they are air-hardened.

Have better hardening temperature while in comparison to chromium hot-work steels.

The primary alloying factors in tungsten hot-work steels consist of tungsten, chromium, vanadium and carbon.

If they are preheated to operating temperature before use.

the breakage of tungsten hot work steels can be decreased.

Thermal shock resistance and sturdiness of those steels can be advanced through decreasing the carbon content material.

WELDING

MECHANIBILITY

ANEALING

TEMPERING

H21 TOOL STEEL| INTRODUCTION| heat treatment