Alloy Code CuNi10Zn25 CuNi12Zn25 CuNi15Zn20 CuNi18Zn20 CuNi22Zn18 CuNi25Zn18 Mechanical Property High corrosion-resistance , elasticity , electroplating and intensity Application Spectacles frame , electronic & electric components , elastic components and connectors .