Carpenter Ferrium S53 is both corrosion resistant and ultrahigh-strength for aerospace structural applications. Please see updated designation and information on this alloy in Alloy Digest SA-589, December 2008. 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, and machining. Filing Code: SS-1003. Producer or source: Carpenter Specialty Alloys. Originally published December 2007, revised December 2008.