Carlson Alloy 904L is a 21Cr-24Ni-4.5Mo-1.5Cu low-carbon austenitic alloy that resists corrosion in a wide range of both oxidizing and reducing environments. It has good pitting and crevice-corrosion resistance and eliminates stress-corrosion cracking in most common chloride environments. The alloy resists intergranular corrosion in postwelded or stress-relieved conditions because of its very low carbon content. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-844. Producer or source: G.O. Carlson Inc.