55/45 Copper Nickel, 55/45 Ni Cu

Copper Nickel 55/45 Wire Supplier

Ni Cu 55/45 Resistance Wire exporter in India, AWS 081 Welding Wire manufacturer

Copper Nickel 55/45 Wire Supplier


Copper Nickel 55/45 Wire

Ni Cu 55/45 Resistance Wire


Ni Cu 55/45 Resistance Wire

AWS 081 Welding Wire


AWS 081 Welding Wire

Copper Nickel 55/45 Wire is a type of Copper-Nickel alloy wire which is mainly suitable 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.

Designations: W.Nr. 2.0842, AWS 081

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

55/45 Copper Nickel Chemical Composition

Element Min Max
C 0.10
Si 0.50
Mn 1.00
Fe 1.00
Cu 55.00 nominal
Ni bal

Density 8.89g/cm³ 0.321 lb/in³
Electrical Resistivity at 20°C 49 microhm • cm 295 ohm. Circ. mil/ft
Maximum Operating Temperature 400 °C 750 °F
Melting Point 1270 °C 2320 °F
Coefficient of Expansion 14.7 µm/m °C (20 – 100°C) 8.17 x 10-6 in/in °F (70 – 212°F)


Types Copper Nickel 55/45 Ni Cu Resistance Wire in stock

55/45 Copper Nickel Filler Wire 55/45 Cupro Nickel Filler Wire
CuNi 55/45 Filler Wire CuNi 55/45 Coil Wire
55/45 Cupronickel Alloy Coil Wire CuNi 55/45 Welding Wire
55/45 Cupro Nickel Electrode Wire W.Nr. 2.0842 55/45 Copper Nickel Filler Wire
55/45 Copper Nickel  Coil Wire 55/45 Cu-Ni Coil Wire
AWS 081 55/45 Copper Nickel Welding Wire W.Nr. 2.0842 55/45 Copper Nickel Electrode Wire
55/45 Copper Nickel Welding Wire AWS 081 Nickel Coil Wire
55/45 Cupronickel Electrode Wire CuNi 55/45 Electrode Wire
55/45 Cu-Ni Welding Wire 55/45 Cupro Nickel Wire Mesh