Stainless Steel Alloy 309

Type 309 is an austenitic chromium-nickel stainless steel known for its high corrosion resistance and strength. Type 309 has the same machining properties as Type 304, and can be roll formed, stamped, and drawn easily.

Due to its properties, especially its ability to work under high-temperatures, you will find Type 309 in a wide variety of applications including:

  • Boiler baffles
  • Furnace components
  • Oven lining
  • Fireboxes
  • Kiln Liners
  • Sulfite liquor handling equipment
  • Carbuizing-annealing boxes
  • Heat exchangers
  • Aircraft engines
  • Automotive exhaust parts

All Type 309 stainless steel has the same chemical composition, which includes:

  • Fe 60%
  • Cr 23%
  • Ni 14%
  • Mn 2%
  • Si 1%
  • C 0.20%
  • P 0.045%
  • S 0.030%

Continental Steel is able to supply Type 309 Stainless Steel in a variety of shapes and sizes including sheet, coil, plate, bar, and more. All of the Type 309 Stainless Steel supplied meets or exceeds leading industry standards like those from ASTM and ASME.

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