[Chinalco.com] According to U.S. Patent No. 7,704,333 B2, Alcan Rolled Products Ravenswood LLC (Ravenswood, W.Va) has successfully developed a new type of Al-Cu - Mg-Ag-Mn alloy, both high strength and good plasticity, used in the manufacture of various important aircraft structures, the chemical composition (mass%): 3.8 ~ 5.2Cu, 0.2 ~ 0.6Mg, 0.2 ~ 0.5 Mn, 0.2~0.5Ag, 0.02~0.12Ti; One or more of the following components: 0.1~0.8Cr, 0.1~1.0HF, 0.03~0.6SC, 0.05~0.15V, and the rest are inevitable impurities With A1. The major feature of this alloy is that it does not contain Zr.
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