Alloy Steel 2515 (Nonstandard, formerly AISI-SAE 2515) is a 5% nickel steel well suited for special and/or heavy-duty carburizing applications. It was one of the earliest alloy steels and offers a good combination of strength and low-temperature toughness for non-carburized applications. It has been used in some European countries for many years for cryogenic applications. 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: SA-313. Producer or source: Alloy steel mills and foundries.