SS 321 / 321H REFRACTORY ANCHOR

Alloy 321 is titanium settled austenitic stainless steel with greater general corrosion resistance.

It has phenomenal resistance to intergranular corrosion after presentation to temperatures in the chromium carbide precipitation scope of 800–1500°F (427–816°C). The alloy maintains oxidation to 1500°F (816°C) and has higher creep and stress rupture properties than alloys 304 and 304L. It also maintains good low temperature toughness. Alloy 321H is the higher carbon (0.04–0.10) version of the alloy. It was produced to improve creep resistance and for higher strength at temperatures above 1000°F (537°C). In most occurrences, the carbon content of the plate enables dual certification. Alloy 321 cannot be hardened by heat treatment, just by cold working. It can be effectively welded and processed by standard shop fabrication practices.