Oxygen-free copper
Pure copper does not contain oxygen or any deoxidizer residue. But in fact, it still contains very trace amounts of oxygen and some impurities. According to the standard, the oxygen content is not more than 0.003%, the total impurity content is not more than 0.05%, and the purity of copper is greater than 99.95%.
Oxygen-free copper products are mainly used in the electronics industry. They are often made into oxygen-free copper plates, oxygen-free copper strips, oxygen-free copper wires and other copper materials.
