Characteristics of white copper
According to the chemical composition, cupronickel can be divided into ordinary cupronickel and special cupronickel.
Ordinary white copper consists only of copper and nickel.
In addition to copper and nickel, special cupronickel also contains zinc, manganese, aluminum, iron, lead and other elements, so it is called zinc cupronickel, manganese cupronickel, aluminum cupronickel, iron cupronickel and lead cupronickel.
Cupronickel can be divided into structural cupronickel and electrical cupronickel according to its use.
Structural white copper refers to a Cu-Ni alloy with high strength and high corrosion resistance, usually containing 3-30% Ni, and is often used as a structural material under high pressure and low temperature.
Electrical white copper has excellent electrical conductivity and elongation, and is suitable for making long-span, high-strength transmission lines and overhead tram wires.
Special white copper adds other elements to structural white copper to improve its performance.
For example, aluminum-nickel copper has excellent high-temperature properties and is suitable for use in high-temperature parts of internal combustion engines;
Silicon-nickel copper has excellent elongation and conductivity, and is suitable for use in high-strength span transmission lines, overhead tram wires, etc.;
Zinc-nickel copper has excellent heat resistance, corrosion resistance, fatigue resistance, small resistance temperature coefficient, and is suitable for making springs or thermoelectric materials.
Structural cupronickel includes ordinary cupronickel, iron cupronickel, zinc cupronickel, and aluminum cupronickel, which have good corrosion resistance and processing performance. Used to make condensers, heat exchangers, medical equipment, corrosion-resistant parts, artwork, etc.
Electrical white copper includes ordinary white copper and manganese white copper. It has high resistance, high thermoelectric potential and low resistance temperature coefficient. It is used for compensation wires, thermocouples, resistance instruments and heaters, etc.
