Copper-coated spring
Copper-coated spring refers to a spring product that is plated with a layer of copper on the surface of the spring. This spring is usually made of stainless steel as the base material, and is produced by cold drawing, heat treatment and copper-plated surface treatment. Copper plating can not only improve the gloss of the spring, but also enhance its corrosion resistance.
Copper-coated spring color variety, common are: brass, red, black, gray, brown.





Characteristics and advantages of Copper-coated spring:
- Strong corrosion resistance: Stainless steel itself has strong corrosion resistance, and the copper plating layer can further increase its corrosion resistance, so that it can be used in a wet or corrosive environment for a long time without rust.
- Good electrical conductivity: Copper-coated spring can significantly improve the conductivity of the spring, so that it is widely used in electronic, electrical and other fields.
- Beautiful appearance: the copper plating layer makes the surface of the spring show a golden gloss, with a certain aesthetic, suitable for occasions where the appearance is required.
- Enhance adhesion: The copper plating layer can also improve the adhesion ability of the electric coating on the spring surface and improve the overall performance of the product.
There are obvious differences between Copper-coated spring and galvanized spring in many aspects, let’s understand the following:
1. Material characteristics
- Copper-coated spring: stainless steel as the base material, through the plating process on the surface of a layer of copper. This layer of copper not only improves the corrosion resistance of the spring, but also enhances its electrical conductivity and aesthetics. The copper coating can effectively prevent the oxidation of copper, so as to maintain its good electrical conductivity.
- Galvanized spring: also made of stainless steel or other metal as a substrate, but the surface coating is zinc. Galvanizing can significantly improve the corrosion resistance of springs, especially in wet or corrosive environments. The galvanized layer can effectively prevent the steel wire from being affected by oxidation and corrosion, thus extending the service life of the spring.
2. Application field
- Copper-coated spring: Because of its excellent electrical conductivity and aesthetics, copper-plated spring is widely used in the fields of electronics, electrical, home appliances and so on. For example, it can be used as a connection line for electronic components to ensure the stable transmission of signals; In home appliances, it can be used as a connection line for electrical equipment such as engines and power tools to ensure the normal operation of the equipment.
- Galvanized spring: Galvanized spring because of its excellent corrosion resistance and strength, is widely used in a variety of mechanical equipment, construction engineering, agricultural fields and sports equipment. It can not only be used to manufacture springs, connectors, transmission parts, etc., but also as suspension slings, fixed parts, support devices, etc., to maintain stable performance in harsh environments.
3. Cost
- In general, the cost of a copper plated spring may be slightly higher than that of a galvanized spring, because the copper plating process is relatively complex, and the price of copper is usually higher than that of zinc. However, the specific cost also needs to be considered according to the material price, coating thickness, production process and other factors.
4. Surface treatment effect
- Copper-coated spring: The surface shows a golden gloss, with a certain aesthetic. At the same time, the copper coating can improve the adhesion ability of the coating and improve the overall performance of the product.
- Galvanized spring: The surface is covered with a layer of silver-white zinc layer, with good corrosion resistance. The galvanized layer is uniform and dense, which can effectively block the erosion of chemical substances such as atmosphere and water.
Copper-coated spring with its excellent corrosion resistance, electrical conductivity, beauty and a wide range of applications, become an indispensable part of many industries, in the process of use, just pay attention to maintenance and maintenance, you can ensure its long-term stable performance.