AISI 4422 is a carbon-molybdenum type carburizing steel designed as alternate for the AISI 8600 grades of steel for single quench practice. It is recommended for case hardened gears, pinions, shafts and the like. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on low and high temperature performance as well as forming, heat treating, machining, and joining. Filing Code: SA-136. Producer or source: Timken Roller Bearing Company.