Stainless Steel 321

Stainless 321 is a chromium-nickel steel which was developed with improved intergranular-corrosion resistance. Stainless 321 is resistant to atmospheric corrosion, sterilizing solutions, many organic chemicals, and a wide variety of inorganic chemicals. Type 321 should be used for applications requiring heating between 800 F and 1650 F such as aircraft collector rings, and exhaust manifolds, expansion joints, and high temperature chemical process equipment.

Common Trade Names for Stainless STeel 321 include:

  • Stainless Steel 321

Chemical Data for Stainless STeel 321

  • C: .08
  • Mn: 2.00
  • P: .045
  • S: .03
  • Si: 1.00
  • Cr: 17.0-19.0
  • Ni: 9.0-12.0
  • Mo: .50
  • Cu: .50
  • Ti: 5 X C MIN

Available Forms for Stainless STeel 321

  • Wire
  • Bar
  • Sheet
  • Plate
  • Tube
  • Pipe
  • Fittings
  • Flanges
  • Forgings
  • Welding Rod

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