0.26x3.0mm CuNi40 Constantan flat wire CuNi44 Constantan Ribbon CuNi45Konstantan ribbon Wire

C0.26x3.0mm CuNi40 Constantan flat wire CuNi44 Constantan Ribbon CuNi45 Alloy Wire

Copper nickel alloy, which has low electric resisitance, good heat-resistant and corrosion-resistant, easy to be processed and lead welded. It is used to make the key components in the thermal overload relay, low resistance thermal circuit breaker, and the electrical appliances. It is also an important material for electrical heating cable. It's similar as TANKII's type cupronickel .

diameter 0.03-30mm
Constantan Resistance Wire/Copper Nickel Wire

Grade: 55.00 Copper, 44.00 Nickel

Electrical Resistivity: 0.49 ohm mm2/m

Shape: Wire, rod, bar

Diameter: 0.03mm-30mm

Those are alloys of chemical composition copper + nickel with addition of manganese with a low resistivity (from 231.5 to 23.6 Ohm. Mm2/ft). The most known, CuNi 44 (also called Constantan) presents the advantage of a very low temperature coefficient.

Chemical Content, %

Mechanical Properties

Application: The copper-based low resistance heating alloy is widely used in low-voltage circuit breaker, thermal overload relay, and other low-voltage electrical product. It is one of the key materials of the low-voltage electrical products.