NAS 254 NM has high chromium and molybdenum content and thus is resistant to harsh corrosive environments. The alloy is available in flat products. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-1083. Producer or source: Nippon Yakin Kogyo Company Ltd.