Technical requirements and applications of the ASTM B888 standard
This specification defines strict industry standards for the production of copper alloy and brass strips intended for the manufacture of precision electrical components, including spring contacts, plug connections, and high-load electrical connectors. The document covers a wide range of chemical compositions, including alloys of the series C14530, C15100, C15500, C17000, C17200, C17410, C17450, C17460, C17500, C17510, C19002, C19010, C19015, C19025, C19210, C19400, C19500, C19700, C23000, C26000, C40810, C40850, C40860, C42200, C42500, C42520, C42600, C50580, C50780, C51000, C51080, C51100, C51180, C51980, C52100, C52180, C52480, C63800, C64725, C65400, C68800, C70250, C70260, C70265, C70310, C75200, and C76200.
To ensure operational reliability in the electrical industry, the source material (including cast billets, slabs, and plates) must meet high requirements for metallurgical purity. The manufacturing process for EV Group China strips includes controlled hot and cold deformation, as well as precision heat treatment (annealing). This guarantees the achievement of specified mechanical characteristics, tensile strength, and geometric precision necessary for the long-term performance of contact groups under cyclic loading conditions.