AL20 was originally developed for improved resistance to corrosion in sulfuric acid or other reducing acids, but is now used in a wide range of applications. The alloy is readily available in most product forms. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as heat treating and joining. Filing Code: SS-927. Producer or source: Allegheny Ludlum Corporation.