Copper

About the material

Copper is one of the most important materials for applications requiring high electrical conductivity – particularly in electrical engineering, precision engineering and sensor technology. The key issue is how to deal with oxygen residues that enter the metal during the remelting process.

Unless special measures are taken, liquid copper dissolves small amounts of oxygen, which can lead to problems at temperatures above 300°C, such as precipitation with impurities or embrittlement. This has a direct impact on usability in high-temperature environments.

Cu-ETP (electrolytically refined copper)

Copper content over 99.90%

• Conductivity: 100% IACS in annealed state
• Oxygen content: 200-400 ppm

This grade has excellent conductivity, but is not suitable for applications above 300°C as the oxygen it contains can react.

Cu-OF (oxygen-free copper)

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