321 is a titanium stabilized austenitic chromium-nickel stainless steel which was developed to provide an 18-8 type alloy with improved intergranular-corrosion resistance. This material is stabilized against chromium carbide formation by the addition of titanium. Since titanium has a stronger affinity for carbon than chromium, titanium carbide precipitates within the grains instead of forming at the grain boundaries. 321 stainless steel should be considered for applications requiring intermittent heating between 800ºF (427ºC) and 1650ºF (899ºC), or for welding under conditions which prevent a post-weld anneal. 321 stainless steel is non-magnetic.
We supply 321 stainless steel sheet in a variety of lengths and widths and can custom cut to your exact specifications. Our stainless steel coil can also be slit to your desired width. We are also suppliers of hex bar and 321 round bar stock.
Standard Industry Specifications
ASTM A 167
RR SABRe Edition 2
Common Trade Names
ATI 321 (™ Allegheny Technologies)
Common Applications of 321 Stainless Steel
Aircraft exhaust stacks
Chemical processing equipment
Jet engine parts