ALUMINUM ALLOY MATERIAL HAVING EXCELLENT LOW TEMPERATURE BAKING HARDENABILITY AND FORMABILITY

PROBLEM TO BE SOLVED: To provide an aluminum alloy material having excellent low temperature baking hardenability and formability which can obtain high strength even in heating at the time of low temperature baking coating, and also has excellent formability even after age hardening. SOLUTION: The aluminum alloy material has a composition comprising, by mass, 0.5 to 2.5% Mg, 0.25 to 1.2% Si and 0.1 to 1.0% Ag in such a manner that the content of Mg is controlled to ≥2.0 times the content of Si, and the balance Al with inevitable impurities. Alternatively, the aluminum alloy material has a composition comprising 0.5 to 2.5% Mg, 0.25 to 1.2% Si, 0.1 to 1.0% Ag and 0.05 to 1.0% Mn in such a manner that the content of Mg is controlled to ≥2.0 times the content of Si, and the balance Al with inevitable impurities. COPYRIGHT: (C)2006,JPO&NCIPI