CuNi2/CuNi44/Resistance Copper Nickel Alloy Strip

CuNi2/CuNi44/Resistance Copper Nickel Alloy Strip
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Product Details

Basic Info.

Model NO.:low resistance alloyProduct Type:Strip
Material:Cuni AlloyCarbon Content:Low Carbon
Hole:5Package:According Client's Requirement
HS Code:7408229000Production Capacity:200tons/Year

Product Description

Cuni2/Cuni44/Copper Nickel Alloy Strip

Constantan Wire Definition
Resistance alloy with moderate resistivity and low temperature coefficent of resistance with a flat resistance/temperature curve over a wider range than the "manganins". Constantan also shows better corrosion resistance than the man ganins. Uses tend to be restricted to ac circuits. Constantan is also the negative element of the type J thermocouple with Iron being the positive; type J thermocouples are used in heat treating applications. Also, it is the negative element of the type T thermocouple with OFHC Copper the positive; type T thermocouples are used at cryogenic temperatures.

Chemical Content, %

NiMnFeSiCuOtherROHS Directive



Mechanical Properties

Max Continuous Service Temp400ºC
Resisivity at 20ºC0.49±5%ohm mm2/m
Density8.9 g/cm3
Thermal Conductivity-6(Max)
Melting Point1280ºC
Tensile Strength,N/mm2   Annealed,Soft340~535 Mpa
Tensile Strength,N/mm3   Cold Rolled680~1070 Mpa
Elongation(cold rolled)≥Min)2%(Min)
EMF vs Cu, μV/ºC (0~100ºC)-43
Micrographic Structureaustenite
Magnetic PropertyNon

Constantan Wire Tradenames:

Cuprothal, Alloy 294, Cuprothal 294, Nico, MWS-294, Cupron, Copel, Alloy 45, Neutrology, Advance, CuNi 102, Cu-Ni 44, Konstantan

Resistance Alloy- Constantan Sizes / Temper Capabilities

Condition: Bright, Annealed, Soft

Wire diameter 0.02mm-1.0mm packing in spool, big than 1.0mm packing in coil

Rod, Bar diameter 1mm-30mm

Strip: Thickness 0.01mm-7mm, Width 1mm-280mm

Resistance alloy constantan wire material:
Constantan, CuNi1, CuNi2, CuNi6, CuNi8, CuNi10, CuNi14, CuNi19, CuNi23, CuNi30, CuNi34, CuNi40 (6J40), CuNi44.


Constantan has a number of special characteristics due to which it is known as the most versatile alloy that is available.  Some of its important characteristics are:

High specific heat resistance

Negligible temperature Coefficient

Easily ductile

Resistant to atmospheric corrosion

Can be easily soldered and molded