Pure copper and nickel can significantly improve the strength, corrosion resistance, hardness, electrical resistance and thermoelectricity, and reduce the temperature coefficient of resistivity. Therefore, compared with other copper alloys, cupronickel has exceptionally good mechanical and physical properties, good ductility, high hardness, beautiful color, corrosion resistance and deep drawing performance. It is widely used in shipbuilding, petrochemical industry, electrical appliances, instruments, medical machinery, and daily necessities. , Handicrafts and other fields, and is also an important resistance and thermocouple alloy. The disadvantage of copper-nickel alloy is that the main added element-nickel is a scarce strategic material, and the price is relatively expensive.

Among copper alloys, cupronickel has excellent corrosion resistance and is easy to mold, process and weld. It is widely used as corrosion-resistant structural parts in shipbuilding, petroleum, chemical, construction, electric power, precision instruments, medical equipment, musical instruments and other sectors. . Some cupronickel has special electrical properties, which can be used to make resistance elements, thermocouple materials and compensation wires. Non-industrial cupronickel is mainly used to make decorative crafts.