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| 铜在钢中的作用 (【技】总体上说，铜是钢中的有益元素。铜含量约在 0.35% 以内时，随着铜含量的增加，对改善碳素钢的耐锈蚀能力效果显著。但含量在 0. 35% - 1. 00% 之间时，虽然耐锈蚀能力仍有所增加，但增加缓慢。铜能提高钢材的强度，还能提高钢材的淬硬性。当钢中铜含量大于0.40%时，易产生热脆现象，焊接性也逐渐变差。) | |||
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