G-TECH 410HR

These consumables are specifically designed for welding 12% Cr martensitic stainless steels, such as type 410, in both wrought and cast conditions. It is crucial that fabrication welds, with a similar composition, undergo appropriate post-weld heat treatment (PWHT) due to high hardness (~450 HV) and low ductility in the as-welded condition. Type 410 contains a sufficient amount of carbon to promote transformation through air hardening into a primarily martensitic microstructure. Structural performance below room temperature is limited by the relatively high ductile-brittle transition temperature (especially in welds) and modest creep resistance up to about 550 °C. It has good general corrosion resistance in non-aggressive environments, sulfide stress corrosion cracking resistance in sour crude oil conditions, and oxidation resistance up to about 800 °C. Typical applications include hydrocrackers, reaction vessels, distillation units, and associated piping in refineries; furnace components, linings; cladding for pinch rolls in steel mills; cast valve bodies, turbine parts, and burner nozzles.