Shanghai Tankii Alloy Material Co.,Ltd
| 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 |
| Brand Name | Tankii |
| Model Number | CuNi44 |
| Certification | ISO 9001, SGS, RoHS |
| Place of Origin | China |
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Product Specification
| 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 |
| Brand Name | Tankii | Model Number | CuNi44 |
| Certification | ISO 9001, SGS, RoHS | Place of Origin | China |
| High Light | CuNi44 resistance wire for precision resistors ，Constantan alloy wire for resistors ，Copper nickel alloy resistance wire | ||
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.
Company Details
Business Type:
Manufacturer,Exporter
Year Established:
1981
Total Annual:
8000000-100000000
Employee Number:
90~100
Ecer Certification：
Verified Supplier
Shanghai Tankii Alloy Material Co., Ltd.specialized in production of Resistance Heating Alloy, Nickel Chromium Alloy, Iron Chromium Aluminum Alloy, Nickel Aluminum Alloy, Manganin, Copper Nickel Alloy, thermocouple wire, pure nickel and other precision alloy materials in the form of round wire, ribb... Shanghai Tankii Alloy Material Co., Ltd.specialized in production of Resistance Heating Alloy, Nickel Chromium Alloy, Iron Chromium Aluminum Alloy, Nickel Aluminum Alloy, Manganin, Copper Nickel Alloy, thermocouple wire, pure nickel and other precision alloy materials in the form of round wire, ribb...
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