This slightly alloyed copper quality is used for glossy copper coatings or as a sub-layer before a nickel layer. Also known as DHP Copper or DXP copper, it contains between 400 and 600 ppm of Phosphor. Anodes are placed in copper sulphate baths.
Uses: copper flat anodes are used for electrolytic copper plating. Depending on the type of copper deposit you want (mat, gloss, ductile, etc.), different copper qualities will be used: electrolytic, Oxygen free or phosphorous.