Beryllium copper is a kind of Wuxi bronze with beryllium as the main alloy component. It contains 1.7~2.5% beryllium and a small amount of nickel, chromium, titanium and other elements. After quenching and aging treatment, the strength limit can reach 1250~1500MPa, close to the level of medium strength steel. In the quenching state, it has good plasticity and can be processed into various semi-finished products. Beryllium bronze has high hardness, elastic limit, fatigue limit and wear resistance, as well as good corrosion resistance, thermal conductivity and conductivity. It does not produce sparks when impacted. It is widely used as an important elastic element, wear-resistant parts and explosion-proof tools.