Copper has many prominent physical and chemical properties in the materials used for sheet metal processing. For example, its thermal conductivity and conductivity are both very high, with its conductivity second only to silver and its thermal conductivity second only to silver and gold. Chemical stability is strong, easy to melt, and has good corrosion resistance in the atmosphere, fresh water, and sea water.

Copper zinc alloy, the color changes from yellow red to yellow with the increase of zinc content. Brass has higher mechanical properties than pure copper and generally does not rust or corrode; It has good plasticity and is widely used in the mechanical manufacturing industry to make various structural parts.

Moreover, it has high plasticity and can withstand various cold and hot pressure sheet metal processing well. The disadvantage is that its strength and hardness are low, and it is generally not used as structural components. Pure copper, also known as red copper, is light rose or light red in color. After the surface forms a copper oxide film, the surface appears purple red.