409 ALMZ is an aluminum-coated type 409. The substrate is AL 409HP, and the coating is applied by a hot-dipping process. The coating improves corrosion and oxidation resistance. The product will pass 72 h salt spray with no red rust according to ASTM B 117. This datasheet provides information on composition, hardness, tensile properties, and bend strength. It also includes information on corrosion resistance as well as forming, joining, and surface treatment. Filing Code: SS-939. Producer or source: Allegheny Ludlum Corporation.