(一)中國鉛錠牌號及化學成分見表3-1。表3-1鉛錠牌號及化學成分牌號化學成分(質量分數(shù))/%標準號Pb(不小于)AgCuBiAssbSnZnFe雜質總和Pb99.99499.9940.0050.0010.0030.00050.0010.0010.00050.00050.06GB/T469-1995Pb99.9999.990.0010.00150.0050.0010.0010.0010.0010.0010.01Pb99 (共 7655 字) [閱讀本文] >>
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