| 摘要 |
The invention provides a copper alloy sheet which is capable of effectively inhibiting rags in punching and improving punching and blanking performance of Cu-Sn alloy, and a press-molded product with the same. The copper alloy sheet contains 0.01-0.03 mass% of Sn, the balance is composed of copper and unavoidable impurities, the electric conductivity higher than 70% IACS is achieved, and the ratio (r) of a half peak width to a plate thickness obtained from a displacement-load curve in a shearing experiment is no less than 0.2 and no more than 0.7. |
