Resistance Flat CUNi44 Constantan Wire For Heating Element
Resistance Flat Wire Constantan / CUNi44 Used For Electrical Element
Product Description
In 1887, Edward Weston discovered that metals can have a negative temperature coefficient of resistance, inventing what he called his "Alloy No. 2." It was produced in Germany where it was renamed "Konstantan"
Constantan is a proprietary name for a copper–nickel alloy also known as Eureka, Advance, and Ferry. It usually consists of 55% copper and 45% nickel.
Its main feature is the low thermal variation of its resistivity, which is constant over a wide range of temperatures.
Other alloys with similarly low temperature coefficients are known, such as manganin (Cu [86%] / Mn [12%] / Ni [2%] ).
Copper nickel alloy Wire with moderate resistivity and low temperature coefficent of resistance with a flat resistance/temperature curve over a wider range than the "manganins". it also shows better corrosion resistance, and welding performance. It always used for thermal overload relay, low-voltage relay etc.
Resistance Flat Wire Constantan / CUNi44 Used For Electrical Element
Chemical Content, %
Ni |
Mn |
Fe |
Si |
Cu |
Other |
ROHS Directive |
|||
Cd |
Pb |
Hg |
Cr |
||||||
| 44 | 1.0 | - | - | Bal | - | ND | ND | ND | ND |
Mechanical Properties
Max Continuous Service Temp |
400ºC |
Resisivity at 20ºC |
0.49±10%ohm mm2/m |
Density |
8.9 g/cm3 |
Thermal Conductivity |
<-6 |
Melting Point |
1280ºC |
Tensile Strength,N/mm2 Annealed,Soft |
≥420 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 |
Resistance Flat Wire Constantan / CUNi44 Used For Electrical Element
Our advantages:
a) We can provide high quality material, excellent design, precise manufacturing,complete specifications, considerate and integrity serivices.
b) We can provide all kinds of electric heating alloy material and elements, including customized products.
c) We can provide a complete solution for you.
d) OEM service can be provided.
e) Product selection
f) Process optimization
g) New product development
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Company Information
Shanghai Tankii Alloy Material Co.,Ltd. is specialized in production of Ni-Cr Alloy, Cu-Ni Alloy, Fechral, thermocouple wire, pure nickel and other precision alloy materials in the form of wire, strip, rod, bar and plate.
We've already got ISO9001 quality system certification and ISO14001 environmental protection system.
We own a complete set of advanced production flow of refining, cold reduction, drawing and heat treating etc. We also proudly have independent R&D capacity.
Based on the principle of "first quality, sincere service", our managing ideology is pursuing technology innovation and creating the top brand in the alloy field. We persist in Quality - the foundation of the survival. It is our forever ideology to serve you with full heart and soul. We committed to provide customers all over the world with high-quality, competitive products and perfect service.
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