The 5 Ni-025 Mo Steel is a carburizing steel designed for heavy-duty service. It possesses materially higher hardenability in both case and core than any other commercially available carburizing steel free from the processing difficulties associated with the formation of massive chromium carbides. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on low and high temperature performance, and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SA-268. Producer or source: Copperweld Steel Company.