SAE AMS 4257A

SAE AMS 4257A (Aluminum Alloy, Extrusion, 3.7Cu - 1.15Li - 0.5Zn - 0.45Ag - 0.4Mg - 0.3Mn - 0.1Zr (2055-T84) Solution Heat Treated, Stress Relieved by Stretching 2% to 5% and Aged)· SAE (Соединенные Штаты) · 1 материалов