NSSMC-NAR-AH-4 is an austenitic stainless steel with excellent oxidation resistance. The chemical composition can be identified as 23Cr-11Ni-N-REM-B. This datasheet provides information on composition, hardness, and tensile properties as well as fracture toughness and creep. It also includes information on high temperature performance as well as forming. Filing Code: SS-1241. Producer or source: Nippon Steel and Sumitomo Metal Corporation.