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List of Alloys & profiles

List of Alloys & profiles

Alloy Wire International

Datasheet: 45/55 Ni Cu Resistance Wire

45/55 Ni Cu Resistance Wire

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 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

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


W.Nr. 2.0842
AWS 081

Chemical Composition

ElementMin %Max %
Cu55.00 nominal

Alloy Details

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)