Beryllium bronze with beryllium as the main element has a beryllium content of 0.2%~2% and a small amount of cobalt or nickel as the third element. The alloy can be strengthened by heat treatment. Beryllium bronze is an ideal elastic material with high conductivity and high strength, no magnetic resistance, spark resistance, wear resistance, corrosion resistance, fatigue resistance and stress relaxation Beryllium bronze castings are typically used as moulds for plastics or glass, resistance welding electrodes for petroleum, explosion-proof tools, submarine cable shields, etc. Beryllium bronze processing materials are typically used as flow carrier reed connectors, contact fasteners, spring springs and spiral springs, film boxes, bellows, and lead frames in electronic devices.