Stainless Steel / 330 ANN

330 stainless steel is an austenitic, nickel-chromium-iron-silicon alloy that has outstanding resistance to oxidation and carburization up to 2200F with high strength. The excellent resistance to oxidation and carburization is provided by the high nickel and chromium content of the alloy, further enhanced by its silicon content. Alloy 330s ultra high nickel content of 34 to 37% also provides high resistance to chloride stress corrosion cracking and embrittlement from the precipitation of sigma phase in most furnace atmospheres. Alloy 330 also has a low coefficient of expansion, excellent ductility, and high strength. This material is ideally suited for demanding, high-temperature, high-pressure applications such as chemical and petrochemical processing, thermal processing, ore processing, and power generation. (UNS N08330)

Chemical Makeup

Element Min Max
Carbon, C 0.8
Manganese, Mn - 2
Silicon, Si 0.75 1.5
Sulfur, S - 0.03
Phosphorus, P 0.03
Chromium, Cr 17 20
Nickel, Ni 34 37
Copper, Cu - 0.5
Molybdenum, Mo 3 0.75
Tin, Sn - 0.025
Lead, Pb - 0.005

Common Applications

  • Industrial Industrial


  • Oxidation Resistance
  • Carburization Resistance
  • Excellent Ductility
  • High Strength

We stock 330 ANN to the following specifications:

  • AMS-5716

Click on a cross-section to see the sizes we stock:

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