| 摘要 |
PURPOSE:To obtain a good lead material by a method wherein the improvement of the strength and heat resistance is contrived by adding Fe, Sn, and Zn to a normal Cu base metal, and the improvement of the quality of the alloy ingot by adding P. CONSTITUTION:When adding 0.05-0.5% Fe and 0.05-0.5% Sn to Cu, the strength and heat resistance can be improved without remarkably decreasing the thermal conductivity proper to Cu. The addition of Zn thereto at 0.05-1.5% further increases the strength and heat resistance. The addition of P at 0.002- 0.05% improves the workability. When these metals are added in excess of the range of composition for contents, the thermal conductivity remarkably decreases. Particularly in case of excess amount of P content, the bending workability decreases, and, in case of less content amount, the ingot quality decreases resulting in poor bending workability. |
