| 摘要 |
<p>{Problems} To provide a copper alloy sheet material and a method of producing the same, which is high in Young's modulus and excellent in mechanical strength, and which is suitable for lead frames, connectors, terminal materials, and the like in electrical/electronic equipments, for connectors, for example, to be mounted on automotive vehicles, and for terminal materials, relays, switches, and the like. {Means to solve} A copper alloy sheet material, having an alloy composition comprising any one, two, or three of Cr, Zr, and Ti in 0.05 to 1.0 mass% in total, with the balance being copper and unavoidable impurities, wherein, in crystal orientation analysis by EBSD analysis, in connection with accumulation of atomic planes oriented toward the transverse direction (TD) of a rolled sheet, an area ratio of a region having atomic planes in which the angle formed by the normal direction of (111) plane and the TD is 20° or less, is more than 50%; and a method of producing the same.</p> |
