Types and characteristics of nickel-copper alloy (white copper)

Copper-nickel alloy, also called white copper, is a copper-based alloy with nickel as the primary included aspect. It has a silvery white metallic luster, hence the name copper-nickel alloy.

Copper and nickel can dissolve considerably in each other to form a constant solid solution; that is, no matter the proportion of each other, they are constantly an alpha single-phase alloy.

When nickel is dissolved right into red copper and the web content surpasses 16%, the shade of the alloy becomes silvery white. The higher the nickel content, the whiter the color. The nickel content in copper-nickel alloys is generally 25%.

Benefits and drawbacks

Copper and nickel can dramatically enhance the strength, deterioration resistance, solidity, resistivity, and thermoelectric properties of copper alloys and decrease the temperature level coefficient of resistivity. Therefore, compared with other copper alloys, copper-nickel has excellent mechanical and physical properties, including good ductility, high hardness, attractive shade, corrosion resistance and deep drawing homes.

It is commonly utilized in shipbuilding, the petrochemical sector, electric devices, instrumentation, clinical equipment, daily needs, inventions and other fields. It is additionally a vital resistance alloy and thermocouple alloy.

The disadvantage of copper-nickel alloy is that the main added aspect of nickel is that it is a scarce tactical product, and the cost is fairly high.

Nickel-copper alloy (also called white copper) uses crystal oscillator component housing, crystal shell, potentiometer slide, medical equipment, developing products, and so on.


Composite copper-nickel

Copper-nickel alloys, including manganese, iron, zinc, Aluminum and various other elements are called composite copper-nickel (that is, copper-nickel with more than three aspects), consisting of iron-copper-nickel, manganese-copper-nickel, zinc-copper-nickel, and aluminum-copper-nickel. In composite copper-nickel, in addition to copper material, the 2nd main aspect symbol and the element number team other than copper web content represent the material of numerous elements. As an example, BMn3-12 suggests that the nickel material is about 3% and the manganese material has to do with 12%.

There are 4 sorts of composite copper-nickel:

① Iron-nickel copper: Versions are BFe5-1.5 (Fe)-0.5 (Mn), Bfe10-1 (Fe)-1 (Mn), Bfe30-1 (Fe)-1 (Mn). The amount of iron included in copper-nickel alloys does not surpass 2% to prevent rust and cracking. It is identified by high stamina, especially its rust resistance to streaming salt water, which can be considerably improved.

② Manganese white copper: Versions are BMn3-12, BMn4.0-1.5, BMn43-0.5. Manganese copper-nickel has a low-temperature resistivity, can be used in a broad temperature array, and has excellent corrosion resistance and processability.

③ Zinc cupronickel: Zinc-nickel alloy has outstanding detailed mechanical properties, excellent deterioration resistance, excellent cold and hot handling creating homes, is simple to reduce, and can be made into cords, poles and plates, and is used to make tools, meters, clinical tools, daily requirements and Interaction and other accuracy parts.

④ Aluminum white copper: Versions are Bal13-3 and Bal16-1.5. It is an alloy formed by including Aluminum to a copper-nickel alloy with a density of 8.54-0.3. The properties of the alloy relate to the proportion of nickel and light weight aluminum in the alloy when Ni: Al=10:1, the alloy has the best efficiency.

Frequently utilized aluminum-nickel coppers include Cu6Ni1.5 Al, Cu13Ni3Al, and so on, which are mostly used in the manufacture of numerous high-strength, corrosion-resistant components in shipbuilding, electric power, chemical market and other industrial fields.


TRUNNANO is a supplier of copper-nickel alloy plate with over 12 years experience in nano-building energy conservation and nanotechnology development. It accepts payment via Credit Card, T/T, West Union and Paypal. Trunnano will ship the goods to customers overseas through FedEx, DHL, by air, or by sea. If you are looking for high-quality copper-nickel alloy plate, please feel free to contact us and send an inquiry.


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