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本专利提供了一种在高温下抗冲刷的Al—Si—Cu合金,可适用于制造金属型。它含有如下化学成分(wt%):〈0.10Mg,4.5~10.OSi,2.0~5.0Cu,〈0.40Ni,〈0.9Fe,〈0.30Zn,0.05~0.25Ti,0.05~0.25Zr,0.02—0.30V,0.1—0.5Mn,Hf、Nb、Ta、Cr、Mo或W等在0.03~0.30范围内,余量为铝,其它单个杂质含量〈O.10,杂质总量〈0.30。