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 HSi80-3

HSi80-3

标准:GB/T 13808-1992

概述

  在铜锌合金的基础上,加入黄铜。它在大气和海水中均有较高的耐蚀性,抗应力腐蚀破裂的能力高于一般黄铜。含硅量一般在4%以下。常用硅黄铜80Cu-17Zn-3Si能承受热压力加工,耐蚀性优良,软态的拉伸强度为300MPa,伸长率为58%,适用于制作船舶零件,蒸汽管和水管配件等。这种合金的含铅量不能超过0.01%,否则会损害热塑性,特别是热锻性能。65Cu-31.5Zn-1.5Si-Pb为含的硅黄铜,具有较高的切削性,减摩性和耐蚀性,主要用于耐磨锡青铜代用品

特性

  HSi80-3硅黄铜有良好的力学性能,耐蚀性高,无腐蚀破裂倾向,耐磨性亦可,在冷态、热态下压力加工性好,易焊接和钎焊,切削性好。导热导电性是黄铜中最低的。

用途

  HSi80-3硅黄铜用于船舶零件、蒸汽管和水管配件等。

化学成份

  铜 Cu :79.0~81.0

  锡 Sn :≤0.2

  锌 Zn:余量

  铅 Pb:≤0.1

  磷 P:≤0.02

  铝 Al:≤0.1

  铁 Fe:≤0.6

  锰 Mn:≤0.5

  硅 Si :2.5~4.0

  锑 Sb :≤0.05

  铋 Bi:≤0.003

  注:≤1.5(杂质)

力学性能

  抗拉强度 σb (MPa):≥295
  伸长率 δ10 (%):≥25
  注 :棒材的纵向室温拉伸力学性能
  试样尺寸:直径10~75[3]

●热处理规范:

热加工温度750~850℃。

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