A Nickel Silicon Chromium Copper is an alloy having a high hardness and improved electrical conductivity almost equal to that of Beryllium Copper. The alloy is composed by weight of 2.0% to 3.0% Nickel, 0.4% to 0.8% Silicon, 0.1% to 0.5% Chromium, and the balance Copper.It replaces the Beryllium Copper in practically all applications.