AISI 8720 is a low alloy carburizing steel capable of producing high core strength and toughness. It is recommended for shock resistant machinery parts. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on low temperature performance as well as forming, heat treating, machining, and joining. Filing Code: SA-211. Producer or source: Alloy steel mills and foundries.