AISI-E9310 is a chromium-nickel-molybdenum alloy carburizing steel having high hardenability, high core strength and high fatigue resistance. This datasheet provides information on composition, hardness, and tensile properties as well as fracture toughness. It also includes information on forming, heat treating, machining, and joining. Filing Code: SA-43. Producer or source: Alloy steel mills and foundries.