Stainless Steel Alloy 321

Stainless Steel Type 321 is an austenitic stainless steel. It shares much of the same characteristics as Type 304, with the exception of a higher titanium and carbon content. Type 321 offers exceptional corrosion and oxidation resistance, as well as exceptional toughness even at cryogenic temperatures, to metal fabricators. Additional features of Type 321 Stainless Steel include:

Excellent forging and welding

Effective up to roughly 900°C

Not for use in decoration

As a result of its multiple advantages and features, the Type 321 is utilized in a vast array of applications, including:

Annealing safeguards

High-temperature tempering apparatus

Chemical processing apparatus

Automotive exhaust systems

Firewalls

Boiler shells

Exhaust stacks and manifolds on aircraft

Superheaters

Gas and oil refining apparatus

The unique chemical structure of type 321 includes:

Cr 17-19%

Ni 9-12%

Si 0.75%

Fe 0.08%

Ti 0.70%

P .040% \sS .030%

We can provide Type 321 in a range of sizes and shapes, including plate, sheet, and coil, to businesses. SSM offers only Type 321 that meets or surpasses AMS 5510 and ASTM A240 standards.