Electrolytic copper, copper, and red copper

"Electrolytic copper" is the final product of the copper smelting process. It is not in the shape of a spindrel, but rather in sheet form. The edges are not very regular (except when cut out) and the surface is not very smooth.

"Electrolytic copper" can be said to be pure copper, the color is purple, so it is also called "red copper" or "red copper", but in the copper products, add a small amount of other metals (such as zinc, etc.) to improve the pure copper The hardness or other properties, due to the small amount of added, the color did not change, generally still known as "copper" or "red copper."

If more than a certain proportion of zinc is added, the color of copper turns yellow, which is “brass”. The hardness of brass is much larger, but the toughness and ductility are worse, and the electrical conductivity is not as good as that of red copper (red copper).