439 stainless steel tube is a ferritic stainless steel that outperforms Type 409 and Type 436 in both oxidation resistance and corrosion resistance. Special attention to chemical composition combined with special processing give 409 stainless steel tube optimum formability that is reproducible, coil after coil, and heat after heat. This provides special advantages when producing difficult-to-form exhaust systems components. Oxidation and corrosion resistance that is superior to Type 409 makes 439 stainless steel tube attractive for numerous automotive exhaust applications.
Typical uses include tubular manifolds and other exhaust system components where temperatures may exceed the oxidation limit of Type 409 and Type 436, or where wet corrosion resistance, particularly to chlorides, is needed.
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