AK Steel Type 201 is a chromium-manganese-nickel austenitic stainless steel that was developed to conserve nickel. Its properties are similar to those of Type 301. It is a lower cost alternative to Type 301 in certain environments. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming and joining. Filing Code: SS-1313. Producer or source: AK Steel Corporation.