供应铝镁铝锭LM24，LM24铝锭价格U.K铜硅镁锌铁锰镍钛铅锡铬铝实际Al含量LM243.00-4.007.50-9.500.30Max3.00Max1.30Max0.50Max0.50Max0.20Max0.30Max0.20MaxBAL80.2-83.2)