AISI TYPE Stainless Steel is a quench hardenable grade of relatively low carbon content with some added nickel. 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, joining, and surface treatment. Filing Code: SS-88. Producer or source: Stainless steel mills. Originally published May 1959, revised July 1988.