AISI 4027 is a mild carbon, molybdenum alloy steel recommended for gears, crankshafts, camshafts and similar products requiring toughness and strength combinations. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on high temperature performance as well as forming, heat treating, machining, and joining. Filing Code: SA-235. Producer or source: Alloy steel mills and foundries.