The microstructure of copper base corrosion resistant alloy should be single-phase to avoid electrochemical corrosion caused by the second phase in the alloy. For this reason, the added alloy elements should have great solid solubility in copper bars, even infinitely miscible elements. Single phase brass bars, bronze bars and white copper bars used in engineering have excellent corrosion resistance and are important heat exchange materials.

Copper bars are generally used in air conditioning pipes, refrigerator pipes, oil pipes, water supply pipes and various mechanical supporting materials, automobile synchronizer gear rings, marine pumps, valves, structural parts, friction accessories, etc.