Alcoa introduced alloy 7055 in the -T7751 temper for plate and the -T77511 for extrusions in 1991. This new 7XXX alloy was specifically developed for use in compression-dominated structures and provides advantages over alloy 7150 in compressive and tensile strengths while maintaining other important properties such as fracture toughness and corrosion resistance.

Alloy 7055-T7751 plate is available in thicknesses from 0.375 in. (9.53mm) to 1.25 in. (31.75mm) in widths up to 110 in. (2.79m). Alloy 7055-T77511 extrusions are available with wall thicknesses from 0.5 in. (12.7mm) to 2.5 in. (63.5mm) with a maximum circle size of 10 in. (254mm).