Heat-resistant Steel  is a stabilized stainless steel which offers as its main advantage an excellent resistance to intergranular corrosion following exposure to temperatures in the chromium carbide precipitation range from 800 to 1500°F (427 to 816°C). Alloy Heat-resistant Steel  is stabilized against chromium carbide formation by the addition of titanium.

Heat-resistant Steel  is also advantageous for high temperature service because of its good mechanical properties. Alloy 321 stainless steel offers higher creep and stress rupture properties than Alloy 304 and, particularly,  which might also be considered for exposures where sensitization and intergranular corrosion are concerns.