Temper Resistance

The ability of hardened steel to resist loss of hardness during prolonged exposure to elevated temperatures by suppressing carbide growth. It is significantly influenced by strong carbide-forming alloying elements such as chromium, molybdenum, and vanadium.

Temper resistance means the steel doesn't lose its hardness quickly when heated. That's important when welding puts a lot of heat into the weld and heat-affected zone. Alloys with chromium, molybdenum, or vanadium hold hardness better because they slow down carbide growth. When welding such steels, watch out that heat doesn't act too long – otherwise the zone softens and cracks may form. Keep interpass temperature in check and don't let the part get unnecessarily hot.

MetallurgieSchweißtechnik