309S Stainless Steel Sheet/Plate
309S stainless steel sheet/plate is an austenitic heat-resistant stainless steel with high chromium (Cr) and nickel (Ni) content, offering excellent high-temperature oxidation resistance and corrosion resistance. Compared with 304 or 310, 309S has low carbon content, better weldability, and maintains good strength and stability at elevated temperatures.
309S stainless steel is widely used in furnace parts, heat treatment equipment, boilers, chimneys, chemical equipment, and high-temperature pipelines, where long-term high-temperature resistance and oxidation resistance are required.
Key Advantages:
Excellent high-temperature performance, suitable for long-term use above 1000°C
Low-carbon grade ensures good weldability and reduces risk of intergranular corrosion
Good mechanical properties and formability
Ideal for high-temperature furnaces, boilers, chemical equipment, and high-temperature pipelines
Alloy 309S is an austenitic stainless steel that contains higher levels of chrome and nickel. The addition of nickel and chrome provides improved oxidation in temperatures up to 1830°F. 309S is a low carbon version of 309 and is known for being easy to fabricate and weld by most standard methods.
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