| 摘要 |
A nickel-free white or yellowish copper alloy having excellent corrosion resistance, with high degree of whiteness or yellowness, which is non-allergenic and therefore is suitable for use, for example, in elements, sliders, stoppers and the like for a slide fastener. The alloy consists of a composition represented by the general formula I: CuwZnxMny(Al and/or Sn)z wherein w, x, y and z denote weight percentages that are within the ranges of 70</=w</=85, 5</=x</=22, 7<y</=15, and 0<z</=4, or by the general formula II: CuwZnxMny(Al and/or Sn)z wherein w, x, y and z denote weight percentages that are within the ranges of 70</=w</=85, 10</=x</=25, 0<y</=7, and 0<z</=3, wherein both the above alloys could contain other unavoidable elements. The alloy is in a single alpha -phase state at room temperature.
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