| 摘要 |
The present invention pertains to a high-strength copper alloy forging which has excellent characteristics including high hardness, high strength and high thermal conductivity. This high-strength copper alloy forging contains, by mass, 3 to 7.2% ofNi, 0.7 to 1.8% of Si, 0.02 to 0.35% of Zr and 0.002 to 0.05% of P, and further contains, if necessary, one or more of Cr, Mn and Zn in a total amount of 1.5% or less. By virtue of the actions of proper amounts of Zr and P, the high-strength copper alloy forging is less susceptible to cracking during working or heat treatment, and exhibits, after working and heat treatment, excellent characteristics including high hardness, high strength and high thermal conductivity, thus being suitable for use in injection molds for resins, aircraft components, and so on. |
