AISI Type 321 is a titanium stabilized 18-10 stainless steel having a maximum operating temperature of 1650 F. It is recommended for welded equipment and structures. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness and creep. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SS-124. Producer or source: Stainless steel mills.