UNS No. G10860 is a high-carbon oil or water-hardening steel of low hardenability. It develops high surface hardness on quenching rapidly and tempering lightly and it has good resistance to wear. It is used for tools, springs, music wire, machinery parts and many other applications. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: CS-112. Producer or source: Carbon steel mills.