The metal materials used in wire conductors are mainly silver, copper, aluminum, gold, nickel, iron (steel), zinc, and tin. What are the characteristics of each metal material?
1. Silver, metal has the highest electrical and thermal conductivity, has excellent corrosion resistance and oxidation resistance, has excellent plasticity, and is easy to weld. It is mainly used for high temperature resistant wires (based on the skin effect principle) and high frequency communication cable conductors. Plating and cladding.
2. Copper is second only to silver in conductivity and second to gold and silver in thermal conductivity, corrosion resistance, non-magnetic, good plasticity, easy to weld, and widely used. Copper alloys are mainly used to improve the wear resistance, corrosion resistance and mechanical and physical properties of copper.
3. Aluminum, second only to silver, copper, and gold in electrical conductivity, good thermal conductivity and corrosion resistance, usually mechanical strength, good plasticity, small specific gravity. The disadvantage is that the tensile strength is low and it is not easy to weld. Aluminum alloys are mainly used to improve the heat resistance, weldability and mechanical strength of aluminum.
4. Gold and nickel, used as high temperature resistant wire.
5. Iron (steel), often used as reinforcement information of composite conductors, such as steel core aluminum stranded wire, copper clad steel, aluminum clad steel wire, etc.
6. Zinc, used as a coating for steel wires, steel strips, and iron conductors, to prevent corrosion.
7. Tin is used as a coating for steel wire and copper wire, which has anti-corrosion effect and is beneficial to the welding of copper wire.
High-temperature wires mainly use tin-plated copper and silver-plated copper as conductors. Bare copper can also be used as conductors according to customer requirements.