Stainless Steel Alloy 321

Type 321 Stainless Steel is an austenitic stainless steel. It has many of the same qualities of Type 304, except for a higher level of titanium and carbon. Type 321 offers metal fabricators an outstanding corrosion and oxidation resistance, as well as excellent toughness even down to cryogenic temperatures. Other characteristics of Type 321 Stainless Steel include:

  • Good forming and welding
  • Works well up to about 900°C
  • Not for decorative uses

Due to its numerous benefits and capabilities, Type 321 is used a wide variety of applications including:

  • Annealing covers
  • High-temp tempering equipment
  • Chemical processing equipment
  • Automotive exhaust systems
  • Firewalls
  • Boiler casings
  • Aircraft exhaust stacks and manifolds
  • Superheaters
  • Gas and oil refinery equipment

Type 321 has a unique chemical structure that includes:

  • Cr 17-19%
  • Ni 9-12%
  • Si 0.75%
  • Fe 0.08%
  • Ti 0.70%
  • P .040%
  • S .030%

We can supply companies with Type 321 in a variety of sizes and shapes, like plate, sheet, and coil. All the Type 321 available via Continental Steel meets or exceeds AMS 5510 and ASTM A240.

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