| 摘要 |
PROBLEM TO BE SOLVED: To provide a copper alloy material having improved shearing workability by reducing the ratio of a shear plane to an edge face subjected to shearing. SOLUTION: The copper alloy material comprises, by mass, 0.01 to 0.2% Zr and 0.001 to 0.05% P wherein the ratio of the mass of Zr to the mass of P (Zr/P) is controlled to the range of 4 to 20, and the balance Cu with inevitable impurities. COPYRIGHT: (C)2009,JPO&INPIT
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