The material selection of shaped pins is rich and diverse, common metal materials such as copper, copper alloy, stainless steel, iron, and some composite materials with special electrical properties. Copper and copper alloys are commonly used as basic materials because of their excellent electrical conductivity and good processing properties. In some high frequency circuits or precision electronic equipment with high conductivity requirements, copper shaped pins can ensure high efficiency and low loss of signal transmission. Stainless steel shaped pin with excellent corrosion resistance, suitable for electronic equipment working in harsh environments, such as outdoor communication base stations, industrial control equipment, etc., can effectively resist moisture, salt and other erosion, prolong the service life of equipment. Iron-based shaped pins are used in some applications where cost is more sensitive and there is a certain need for magnetism, such as pins in some electromagnetic relays. The manufacturing process of shaped pins requires highly sophisticated technology. First of all, in the processing of raw materials, appropriate processing methods should be used according to the characteristics of different materials, such as copper may be preliminarily formed by stamping, turning and other processes. For special-shaped pins with complex shapes, it is often necessary to use precision molds for molding processing to ensure dimensional accuracy and shape consistency. In the manufacturing process, the control of dimensional tolerances is extremely strict, usually down to the micron level, to meet the high-precision assembly requirements inside the electronic device. Some special-shaped pins also need surface treatment, such as gold plating, silver plating, nickel plating, etc. These surface treatment processes can not only enhance the electrical conductivity and corrosion resistance of the pin, but also improve the contact performance between it and other connecting parts, improving the reliability and stability of the connection.
