SUPERSEDING SPECIFICATION: The requirements of this specification are embodied in the latest issue of AMS 4149, ALUMINUM ALLOY FORGINGS, 5.6Zn - 2.5Mg - 1.6Cu - 0.23Cr (7175-T736), Solution and Precipitation Heat Treated. The requirements of the latest issue of AMS 4149 shall be fulfilled whenever reference is mad to this specification.
