We’re exhibiting: Valve World Expo, Düsseldorf, Germany. 29th November – 1st December. Hall 1 Booth #C17. Learn more.

List of Alloys & profiles

List of Alloys & profiles

Alloy Wire International

Datasheet: 45/55 Ni Cu Resistance Wire

45/55 Ni Cu Resistance Wire

45/55 Ni Cu Resistance Wire is a Nickel-Copper alloy wire used mainly for its medium range electrical resistivity and very low temperature-coefficient of resistance. 45/55 Ni Cu Resistance Wire has a medium resistivity and is often used in electrical resistance heating applications.

45/55 Ni Cu Resistance Wire is also known as Constantan, Hecnum, Eureka, Ferry, Vernicon and Advance.

Available in all profile options

45/55 Ni Cu Resistance Wire - Alloy Wire International 1

Typical Applications

Typical Applications

45/55 Ni Cu Resistance Wire is known to be suitable for the following applications:

Power resistors, shunts, thermocouples and wire-wound precision resistors having operating temperatures up to 400 °C (750 °F).


Designations

W.Nr. 2.0842
AWS 081

Chemical Composition

The chemical composition of 45/55 Ni Cu Resistance Wire is indicated in the table below:

ElementMin %Max %
C0.10
Si0.50
Mn1.00
Fe1.00
Cu55.00 nominal
Nibal

Alloy Details

45/55 Ni Cu Resistance Wire density, electrical resistivity, operating temperature, melting point, and coefficient of expansion is indicated in the table below:

DensityElectrical Resistivity at 20°CMaximum Operating TemperatureMelting PointCoefficient of Expansion
8.89 g/cm³49 microhm • cm400 °C1270 °C14.7 µm/m °C (20 – 100°C)
0.321 lb/in³295 ohm. Circ. mil/ft750 °F2320 °F8.17 x 10-6 in/in °F (70 – 212°F)