HPb63-3铅黄铜
2026-06-21
HPb63-3此铜中含铅。铅几乎不固溶于铜-锌合金中，而存在于固溶体的晶界处。经过压力加工，铅以游离的质点分布在固溶体内。由于游离的铅质点具有润滑和减磨的特性。因此，此钢具有极
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