AISI 4718 is a low-carbon nickel-chromium-molybdenum carburizing steel recommended for applications requiring a strong, tough core combined with a highly wear-resistant carburized case. It has fairly high hardenability and can be used without carburizing. 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-289. Producer or source: Alloy steel mills and foundries.