The materials used for electrical Connector Pin directly affect their performance and service life. Common materials include copper, aluminum, stainless steel, etc. Copper has become the preferred material for electrical Connector Pin due to its excellent electrical and thermal conductivity. It can efficiently transmit current and reduce energy loss caused by resistance. However, copper is easily oxidized in certain environments, affecting contact performance. Although aluminum is slightly less conductive than copper, it has the advantages of being lightweight and low-cost. Stainless steel is used in special environments for its excellent corrosion resistance. In addition, to further improve the performance of the terminal, surface treatment technologies such as gold plating and tin plating are also used to enhance its anti-oxidation and electrical conductivity, ensuring that the electrical Connector Pin can work reliably under various complex conditions.