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妯欐簴锛欰STM B103-1991銆丅139-1983(1992銆�1993骞寸増)
鈼忕壒鎬у強鎳夌敤锛�
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閵�+閷�+纾�+閴� Cu+Sn+P+Pb锛氣墺99.5鈶�
閴� Pb锛�3.4~4.5
閻� Fe锛氣墹0.10
閷� Sn锛�3.5~4.5
閶� Zn锛�1.5~4.5
纾� P锛�0.01~0.50
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