AK Steel 441 is a 17-18% by weight, chromium and columbium bearing ferritic stainless steel which provides good high-temperature strength (exceeding that of Types 409 and AK Steel 439 LT Stainless Steels) plus good corrosion resistance in many exhaust gas environments (equivalent to AK Steel 439 LT and 18 Cr-Cb Stainless Steels). Due to its finer, equiaxed grain structure, this alloy offers improved formability over standard AK Steel 18 Cr-Cb Stainless Steel.Information provided by AK Steel. |