Beryllium copper is a supersaturated solid solution copper-based alloy. It is a colored alloy that combines excellent mechanical properties, physical properties, chemical properties and corrosion resistance. After undergoing solid solution and aging treatment, it has the same high strength limit, elastic limit, yield limit and fatigue limit as special steel. At the same time, it also has high electrical conductivity, thermal conductivity, high hardness and wear resistance, high creep resistance and corrosion resistance. It is widely used in the manufacture of various mold inserts, replacing steel to make high-precision, complex-shaped molds, welding electrode materials, die-casting machines, injection molding machines punches, wear-resistant and corrosion-resistant workpieces, etc. Beryllium copper is applied in micro-motor brushes, mobile phones, batteries, products, etc., and is an indispensable important industrial material in national economic construction.