Vanadium-free aluminum alloy suitable for extruded aerospace products

An age formable, extruded structural member suitable for aerospace applications and having improved combinations of strength and toughness and a typical tensile yield strength of about 77 ksi or higher at room temperature, said structural member being made from a substantially vanadium-free aluminum-based alloy consisting essentially of:

• about 4.85-5.3 wt. % copper, about 0.5-1.0 wt. % magnesium, about 0.4-0.8 wt. % manganese, about 0.2-0.8 wt. % silver, about 0.05-0.25 wt. % zirconium, up to about 0.1 wt. % silicon, and up to about 0.1 wt. % iron, the balance aluminum, incidental elements and impurities.

An extruded aerospace structural member having improved combinations of strength and toughness and a typical tensile yield strength of about 77 ksi or higher at room temperature, said structural member being made from a substantially vanadium-free, aluminum-based alloy consisting essentially of:

• about 4.85-5.3 wt. % copper, about 0.5-1.0 wt. % magnesium, about 0.4-0.8 wt. % manganese, about 0.2-0.8 wt. % silver, up to about 0.25 wt. % zirconium, up to about 0.1 wt. % silicon, and up to about 0.1 wt. % iron, the balance aluminum, incidental elements and impurities, said alloy having a Cu:Mg ratio between about 5 and 9.