AISI 3130 is a nickel-chromium alloy steel of the moderate deep hardening type. it develops high toughness at high tempering temperatures. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on heat treating, machining, and joining. Filing Code: SA-50. Producer or source: Alloy steel mills and foundries.