SAE 1064 is a carbon steel with carbon at a high level (nominally 0.64% carbon). It has low hardenability and on austenitizing and liquid quenching it develops a hard surface with a soft, ductile core. It is used for a variety of railway equipment, heavy machinery parts, springs, shafts and a wide range of hand and machine tools that require strength and wear resistance with a ductile core. 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: CS-79. Producer or source: Carbon steel mills.