AISI 1552 is a medium-carbon steel that may be used in the hot-rolled, annealed, normalized, cold-worked or liquid-quenched-and-tempered condition for a variety of applications. It has a high manganese content (1.20-1.50%) to provide increased hardenability which is reflected in all uses and gives increased strength and hardness in many of its 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, joining, and surface treatment. Filing Code: CS-68. Producer or source: Carbon steel mills.