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SAE AMS4331A

Действует
Aluminum Alloy Extrusions 7.8Zn - 2.6Mg - 2.0Cu - 0.10Zr - (7068-T6511) Solution Heat Treated, Stress Relieved, and Precipitation Heat Treated
This specification covers an aluminum alloy in the form of extruded bars, rods, shapes (profiles), and tubing 0.250 to 3.000 inches, incl (6.35 to 76.20 mm) in nominal diameter, least thickness or nominal wall thickness (see 8.5).