AISI 8655 is a triple-alloy steel of the oil-hardening type. Its good hardenability and strength make it suitable for many tool and machine parts such as springs and shafts. 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, joining, and surface treatment. Filing Code: SA-310. Producer or source: Alloy steel mills and foundries.