309 Stainless Steel

The 309 stainless steel has a higher corrosion resistance and strength compared to 304 stainless steel. This product is versatile and known for its high heat treatment capabilities.

Chemical Formula
Iron 60%, Chromium 23%, Nickel 14%, Manganese 2%, Silicon 1%, Carbon .20%, Phosphorus .045%, Sulfur .03%

309 Stainless Steel Plate, 309 Stainless Steel Sheet, 309 Round Bar

Common Trade names
309 Stainless, 309 Stainless Steel


  • Corrosion Resistance: 309 stainless stands-up excellently in a range of atmospheric environments even when exposed to corrosive elements.
  • Heat Resistance: Can be hot worked at 1177⁰C and then can be quenched rapidly.
  • Easy to weld by using fusion or resistance welding methods (preferably not oxyacetylene though).
  • Can be headed, upset, drawn, and stamped even though it has high work hardening rate.

The 309 can be applied to a range of applications including a variety of accessories and equipment such as boiler baffles, furnace components, oven linings, fire box sheets, and other high temperature containers.

Available Stock Sizes
See specific product page for unique sizes. Here at Atlantic Stainless no inquiry is too large or too small. Feel free to contact us today for a quote on any of your custom size orders.

If you don’t see what you’re looking for just call one of our team members at 800.876.2700. No inquiry is too large or too small, we specialize in locating hard to find items. If you do see what you are looking, we would love to assist you and give you a quote today!