Type 321 is often referred to as a heat resistant grade because good corrosion resistance and strength characteristics are maintained even at high-temperature levels. As 321 is austenitic, toughness and overall strength levels are maintained at cryogenic temperatures. The material also offers good weldability with superior creep and stress rupture capabilities compared to Type 304 and 304L
321 stainless steel coil is a austenitic chromium-nickel austenitic alloy (18% Cr, 12% Ni) which provides good corrosion resistance in a wide range of corrosive environments.
Alloy 321 (UNS S32100) is stabilized stainless steel plate 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 321 stainless steel plate is stabilized against chromium carbide formation by the addition of titanium.
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