Stainless Steel / 410/403 ANN

403/410 is a martensitic iron alloy dual certified by meeting the chemical and mechanical specifications of both grades. This aircraft quality alloy provides good corrosion resistance plus high strength and hardness. It is magnetic in both annealed and hardened conditions. A wide range of properties can be developed with different heat treatments. Applications requiring moderate corrosion resistance and high mechanical properties are ideal for this alloy. Used typically for parts requiring a combination of high room temperature tensile properties with oxidation resistance up to 1000 F (538 C) and where control of ferrite content is necessary. 403/410 material is often used for turbine parts, compressor blades, flat springs, knives, kitchen utensils and hand tools. (UNS S40300 / UNS S41000)

Chemical Makeup

Element Min Max
Carbon, C 0.1 0.15
Manganese, Mn - 0.6
Silicon, Si - 0.5
Sulfur, S - 0.025
Phosphorus, P 0.025
Chromium, Cr 11.5 12.5
Nickel, Ni - 0.75
Copper, Cu - 0.5
Molybdenum, Mo - 0.5
Tin, Sn - 0.05
Aluminum, Al - 0.05
Nitrogen, N - 0.08

Common Applications

  • Aerospace Aerospace
  • Industrial Industrial


  • High Strength
  • High Hardness
  • Oxidation Resistance
  • Moderate Corrosion Resistance

We stock 410/403 ANN to the following specifications:

  • AMS-2303
  • AMS-5612 (410 ONLY)
  • AMS-5613 (410 ONLY)
  • AMS-QQ-S-763
  • ASME-SA-479
  • ASTM-A-276
  • ASTM-A-479
  • ASTM-A-484
  • QQS-763

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

Subscribe now!

Stay up to date with the latest on Fry Steel and industry news.