EC grade copper is a type of copper that has a high level of electrical conductivity. It is often used in electrical applications, such as wiring, cables, and circuit boards. EC grade copper is also known as electrolytic tough pitch (ETP) copper or oxygen-free copper.
EC grade copper is produced by electrolytically refining copper that has been melted and cast into anodes. The anodes are placed in a solution of copper sulfate and sulfuric acid, and an electric current is passed through the solution. This causes the copper to dissolve from the anodes and redeposit on the cathodes, which are made of pure copper.
The electrolytic refining process removes impurities from the copper, including oxygen, sulfur, and iron. This results in a copper that has a high degree of electrical conductivity and other desirable properties, such as high strength, ductility, and corrosion resistance.
EC grade copper is typically used in applications where high electrical conductivity and other high-quality properties are required, such as in:
- Electrical wiring and cables
- Circuit boards
- Electrical connectors
- Heat sinks
- Busbars
- Transformers
- Motors
- Generators
- Batteries
- Jewelry
- Musical instruments
The high purity of EC grade copper makes it ideal for these applications, ensuring that electrical signals and power are transmitted efficiently and reliably.