Elastic electrode.What are the materials of metal pin terminals?

　　Metal pin terminals are key components in electronic connectors, and the choice of their materials directly affects the performance and life of the connectors. Common materials are as follows:

　　1. Brass: Brass is a copper-zinc alloy with good electrical conductivity and mechanical properties. After surface treatment (such as gold plating, silver plating), brass pin terminals can provide reliable electrical connections in general environments.

　　2. Phosphor bronze: Phosphor bronze is a copper-tin alloy that contains a small amount of phosphorus and has excellent elasticity and corrosion resistance. Phosphor bronze pin terminals are often used in applications that require higher elasticity and durability.

　　3. Beryllium bronze: Beryllium bronze is a high-performance material with extremely high strength, elasticity and conductivity. Beryllium bronze pin terminals are often used in connectors with high-density and high-speed signal transmission.

　　4. Stainless steel: Stainless steel has excellent corrosion resistance and mechanical strength, and is suitable for connectors in harsh environments.

　　5. Aluminum: Aluminum and its alloys are often used in pin terminals for high-current applications due to their light weight and good electrical conductivity.

　　6. Precious metals such as silver and gold: These materials are usually used as surface coatings to improve conductivity and oxidation resistance.

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