Beryllium bronze is a typical aging precipitation strengthened alloy. The typical heat treatment process of high-strength beryllium bronze is to keep the temperature at 760 ~ 830 ℃ for an appropriate time (at least 60 minutes per 25mm thick plate), so that the solute atomic beryllium is fully dissolved in the copper matrix to form the α phase of the face-centered cubic lattice. Supersaturated solid solution. Subsequently, the temperature was kept at 320-340 °C for 2-3 h to complete the process of desolubilization and precipitation to form a γ’ phase (CuBe2 metastable phase). The coherence of this phase with the matrix creates a stress field that strengthens the matrix. The typical heat treatment process of high-conductivity beryllium bronze is to keep for a period of time at a high temperature of 900-950 °C to complete the solid solution process, and then keep it at 450-480 °C for 2-4 hours to achieve the desolubilization and precipitation process. Since more cobalt or nickel is added to the alloy, its dispersion strengthening particles are mostly intermetallic compounds formed by cobalt or nickel and beryllium. In order to further improve the strength of the alloy, a certain degree of cold working is often performed on the alloy after the solution heat treatment and before the aging heat treatment, in order to achieve the comprehensive strengthening effect of cold work hardening and age hardening. Its cold working degree generally does not exceed 37%. Solution heat treatment should generally be carried out by the alloy manufacturer. After the user punches the solution heat-treated and cold-rolled strips into parts, they then self-aging heat treatment to obtain high-strength spring elements. In recent years, the United States has developed strips with aging heat treatment completed by beryllium copper manufacturers, and customers can directly punch them into parts for use. After beryllium bronze has been processed by various processes, the letters in Europe and the United States for the alloy state are: A means solution annealed state (annealed), the alloy is in the softest state, easy to be stamped and formed, and needs to be further cold working or direct aging treatment. . H stands for work-hardening state (hard). Taking cold-rolled sheet as an example, 37% of the cold work degree is fully hard (H), 21% of the cold work degree is semi-hard (1/2H), and 11% of the cold work degree is 1/4 hard state (1/4H), the user can choose the appropriate soft and hard state according to the difficulty of punching the shape of the part. T represents the heat treatment state (heat treatment) that has been aged and strengthened. If the process of comprehensive strengthening of deformation and aging is adopted, its state is represented by HT