| 摘要 |
{Problems} To provide a copper alloy sheet material, which is excellent in the bending property, which has an excellent mechanical strength, which is less in anisotropy in those characteristics in the parallel direction to rolling and the perpendicular direction to rolling, and which is suitable for lead frames, connectors, terminal materials, and the like in electrical or 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 a composition containing Ni in an amount of 1.0 mass% to 5.0 mass%, and Si in an amount of 0.1 mass% to 2.0 mass%, with the balance being copper and unavoidable impurities, wherein, in a crystal orientation analysis by an electron backscatter diffraction method, an area ratio of grains having an orientation in which a deviation from the Cube orientation {0 0 1} <1 0 0> is within 15° is 5% to 50%, and 40 to 100 grains having the orientation in which the deviation from the Cube orientation {0 0 1} <1 0 0> is within 15° are dispersed within 60 µm square; and a method of producing the same. |
