●7075铝棒化学成份:7075铝棒硅Si:0.17~0.377075铝棒锰Mn:1.~1.607075铝棒磷P:≤0.0357075铝棒硫S:≤0.0357075铝棒铜Cu:≤0.307075铝棒铬Cr:≤0.307075铝棒镍Ni:≤0.307075铝棒钼Mo:≤0.15