LUKENS AR-350 is a quenched and tempered carbon-manganese steel furnished to a Brinell Hardness range of 321 to 380 for application as wear and abrasion resisting plate. 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-38. Producer or source: Lukens Steel Company.