Patent ID: 7998402

Claim:
An aluminum alloy product having high strength, excellent corrosion resistance and weldability, consisting of the following composition in wt. %: Mg 3.5 to 6.0 Mn 0.4 to 1.2 Fe 0.06 to <0.5 Si <0.5 Cu <0.05 Zr 0.05 to 0.25 Cr 0.03 to 0.3 Ti 0.05 to 0.2 Sc 0.1 to 0.3 Ag <0.4, and impurities or incidental elements each <0.05, total <0.15, and the balance being aluminum, wherein both Cr and Ti are present in the aluminum alloy product in equal or about equal quantities, and wherein the product is selected from the group consisting of an aircraft fuselage sheet and an aircraft stringer.