| 摘要 |
Provided are a silver-white copper alloy and a method for manufacturing a silver-white copper alloy which has excellent hot processability, cold processability, press characteristics and other processing and mechanical properties, which is not liable to discolor, and which has excellent bactericidal, antibacterial, and anti-Ni allergy properties. The silver-white copper alloy is a composition comprising 51.0-58.0 mass% of Cu, 9.0-12.5 mass% of Ni, 0.0003-0.010 mass% of C, and 0.0005-0.030 mass% of Pb, with the remainder being Zn and other unavoidable impurities. The Cu content [Cu] mass% and the Ni content [Ni] mass% have the relationship 65.5 = [Cu] + 1.2 × [Ni] = 70.0. The metallographic structure has a ß phase of 0-0.9% in terms of the area ratio dispersed in an a-phase matrix. |
