| 摘要 |
Provided are a copper alloy sheet and a manufacturing method for the same, said sheet having a high Young's modulus and excellent strength, and being suited to electrical/electronic device lead frames, connectors, terminals and the like, and to in-vehicle connectors or terminals, relays or switches, etcetera. The sheet has an alloy composition which contains 0.05-1.0 mass% of one, two or three kinds among Cr, Zr and Ti, with the remainder being copper and unavoidable impurities; under crystal orientation analysis by means of EBSD, in relation to the accumulation in the atomic plane facing in the width direction (TD) of a rolled sheet, the surface area ratio of a region having an atomic plane wherein the angle formed by the TD and a normal line of a (111) surface is not greater than 20° is at least 50%. |
