| 摘要 |
<p>Disclosed are high-strength and high-electroconductivity copper alloy pipe, bar, and wire rod. The high-strength and high-electroconductivity copper alloy pipe, bar, and wire rod are produced by a process comprising providing an alloy comprising 0.13 to 0.33% by mass of Co, 0.044 to 0.097% by mass of P, 0.005 to 0.80% by mass of Sn, and 0.00005 to 0.0050% by mass of O with the balance consisting of Cu and unavoidable impurities, Co and P satisfying a requirement of 2.9 = ([Co] - 0.007)/([P] - 0.008) = 6.1, wherein [Co] represents the content of Co, mass%; and [P] represents the content of P, mass%, and hot extruding the alloy. Homogeneous precipitation of Co and P compounds and dissolution of Sn as a solid solution can improve the strength and electroconductivity of the high-strength and high-electroconductivity copper alloy pipe, bar, and wire rod. Further, since the high-strength and high-electroconductivity copper alloy pipe, bar, and wire rod are produced by hot extrusion, a reduction in cost can be realized.</p> |
