CARPENTER CUSTOM 450 stainless steel has very good corrosion resistance, high strength and good fabricating characteristics. A simple, single step aging treatment develops high strength with good ductility and toughness. This datasheet provides information on composition, physical properties, hardness, and tensile properties as well as fracture toughness and fatigue. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SS-251. Producer or source: Carpenter.