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.

Brass bar is a bar shaped object made of copper and zinc alloy, named after its yellow color. Brass with copper content of 56%~68% has a melting point of 934~967 degrees. Brass has good mechanical properties and wear resistance, and can be used to manufacture precision instruments, ship parts, gun casings, etc.