LUKENS AR-300 is a tough, wear-resistant, water quenched and tempered, fine-grain carbon steel. It contains enough copper to double the atmospheric corrosion resistance of carbon steel free from added copper. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: CS-36. Producer or source: Lukens Steel Company.