SAE AMS 4221E:2016-12-13

Aluminum Alloy, Plate 4.4Cu - 1.5Mg - 0.60Mn (2124-T8151) Solution Heat Treated, Stress Relieved, and Precipitation Heat Treated

This specification covers an aluminum alloy in the form of plate 1.500 inches (38.10 mm) to 6.000 inches (152.40 mm) in nominal thickness (see 8.4).