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CuNi44 Copper Nickel Resistance Wire with Low Temperature Coefficient for Precision Resistors and Excellent Corrosion Resistance
CuNi44 Copper Nickel Resistance Wire with Low Temperature Coefficient for Precision Resistors and Excellent Corrosion Resistance
CuNi44 Copper Nickel Resistance Wire with Low Temperature Coefficient for Precision Resistors and Excellent Corrosion Resistance
CuNi44 Copper Nickel Resistance Wire with Low Temperature Coefficient for Precision Resistors and Excellent Corrosion Resistance
CuNi44 Copper Nickel Resistance Wire with Low Temperature Coefficient for Precision Resistors and Excellent Corrosion Resistance
CuNi44 Copper Nickel Resistance Wire with Low Temperature Coefficient for Precision Resistors and Excellent Corrosion Resistance
CuNi44 Copper Nickel Resistance Wire with Low Temperature Coefficient for Precision Resistors and Excellent Corrosion Resistance
CuNi44 Copper Nickel Resistance Wire with Low Temperature Coefficient for Precision Resistors and Excellent Corrosion Resistance
Specifications
Brand Name :
Tankii
Model Number :
CuNi44
Certification :
ISO 9001, SGS, RoHS
Place of Origin :
China
MOQ :
10
Price :
15usd
Payment Terms :
L/C,T/T,Western Union
Supply Ability :
2000t/year
Delivery Time :
10-25 working days
Packaging Details :
wood+spools+cardboard box
Melting Point :
1280
Weight :
based
Chemical Composition :
Ni 76%
Usage :
Widely
Thermalconductivity :
Low to Moderate
Corrosion Resistance :
Excellent
Spool :
DIN 80- DIN200
Condition :
soft
Conductor Material :
pure nickel wire
Specification :
0.07-8.0mm
Nominal Model :
CuNi44, CuNi23,CuNi10
Standardspecifications :
ASTM B127, ASTM B164
Size :
0.16-25mm
Class :
130,155,180,200,220
Description

Product Description

CuNi44 Copper Nickel Resistance Wire (Constantan Alloy) for Precision Resistors

CuNi44 alloy (also known as Constantan, Alloy 300, Cuprothal 294, Cupron) is a copper-nickel resistance alloy with 44% nickel content. It features an extremely low temperature coefficient of resistance (TCR), making it ideally suited for precision resistors, shunts, thermocouple extension wires, and low-temperature heating applications.

Our CuNi44 wire offers excellent resistance consistency, good weldability, and long-term stability. It is widely used in electrical instruments, automotive sensors, aerospace control systems, and laboratory equipment.

We can supply round wire, flat wire, and ribbon/strip in various diameters and tolerances

Chemical Content, %

Ni

Mn

Fe

Si

Cu

Other

ROHS Directive

Cd

Pb

Hg

Cr

44

1.50%

0.5

-

Bal

-

ND

ND

ND

ND

Mechanical Properties

Max Continuous Service Temp

400ºC

Resisivity at 20ºC

0.49±5%ohm mm2/m

Density

8.9 g/cm3

Thermal Conductivity

-6(Max)

Melting Point

1280ºC

Tensile Strength,N/mm2 Annealed,Soft

340~535 Mpa

Tensile Strength,N/mm3 Cold Rolled

680~1070 Mpa

Elongation(anneal)

25%(Min)

Elongation(cold rolled)

≥Min)2%(Min)

EMF vs Cu, μV/ºC (0~100ºC)

-43

Micrographic Structure

austenite

Magnetic Property

Non


Applications:

  • Precision wirewound resistors and shunts

  • Thermocouple extension wire (Type S, R, B - compensating conductors)

  • Low-voltage circuit breakers and thermal overload relays

  • Low-temperature heating elements (e.g., floor heating cables)

  • Automotive sensors and instrument shunts

  • Laboratory resistance standards

Why Choose Our CuNi44 Wire?

  • Strict raw material control (virgin nickel & copper, no recycled scrap)

  • Advanced drawing and annealing process ensures uniform resistivity and smooth surface

  • ±0.005 mm tolerance available for precision applications

  • RoHS, REACH, SGS test report can be provided

  • Short lead time: 15-20 days for bulk orders

Contact us for a free quote or sample request.

CuNi44 Copper Nickel Resistance Wire with Low Temperature Coefficient for Precision Resistors and Excellent Corrosion Resistance
CuNi44 Copper Nickel Resistance Wire with Low Temperature Coefficient for Precision Resistors and Excellent Corrosion Resistance
CuNi44 Copper Nickel Resistance Wire with Low Temperature Coefficient for Precision Resistors and Excellent Corrosion Resistance
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CuNi44 Copper Nickel Resistance Wire with Low Temperature Coefficient for Precision Resistors and Excellent Corrosion Resistance

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Product Detail
Brand Name :
Tankii
Model Number :
CuNi44
Certification :
ISO 9001, SGS, RoHS
Place of Origin :
China
MOQ :
10
Price :
15usd
Contact Supplier
CuNi44 Copper Nickel Resistance Wire with Low Temperature Coefficient for Precision Resistors and Excellent Corrosion Resistance
CuNi44 Copper Nickel Resistance Wire with Low Temperature Coefficient for Precision Resistors and Excellent Corrosion Resistance
CuNi44 Copper Nickel Resistance Wire with Low Temperature Coefficient for Precision Resistors and Excellent Corrosion Resistance
CuNi44 Copper Nickel Resistance Wire with Low Temperature Coefficient for Precision Resistors and Excellent Corrosion Resistance

Shanghai Tankii Alloy Material Co.,Ltd

Verified Supplier
12 Years
shanghai, shanghai
Since 1981
Business Type :
Manufacturer, Exporter
Main Products :
Copper Nickel Alloy Wire, Electric Resistance Wire, Thermocouple Bare Wire
Total Annual :
8000000-100000000
Employee Number :
90~100
Certification Level :
Verified Supplier
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