Copper Nickel Alloy Foil Constantan Strip/CuNi40 Tape/ CuNi44 Alloy
Grade: 6J40 also known as cuni40
Nature: With 40% nickel, 1.5% copper manganese alloy
Constantan is a type of resistance alloy, which is made up of
copper and nickel as the main components.
It has a low temperature coefficient of resistance (TCR), and a
wide operating temperature range (below 500°C). It has good
properities on mechanical working, high resistance of corrosion. It
is used for variable and strain resistance of corrosion. It is used
for variable and strain resisitance elements in alternative
Our products have the following features: Stable performance, high
resistivity, high working temperature, allowable high surface load,
small specific gravity and reasonable price.
Chemical Content, %
|Max Continuous Service Temp||500℃|
|Resisivity at 20℃||0.48±5%ohm mm2/m|
|Thermal Conductivity 20℃,W/(m. ℃)||22.9|
|Tensile Strength,N/mm2 Annealed,Soft||390 Mpa|
|Tensile Strength,N/mm3 Cold Rolled||685~980 Mpa|
Application of Constantan
Constantan is a copper-nickel alloy that contains specific minor
amounts of additional
elements to achieve precise values for the temperature coefficient
of resistivity. Careful
control of melting and conversion practices results in a very low
level of pinholes at
ultra-thin thicknesses. The alloy is used extensively for foil
resistors and strain gauges.
1. What's the minimum quantity customer can order?
If we have your size in stock, we can provide any quantity you
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We have Western union account, wire transfer for sample amount also
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delivery for sample order?
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express cost, you can arrange the express cost together with sample
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We can accept LC T/T payment terms, it also depending on delivery
and total amount. Let's talk more in details after getting your
5. Do you provide free samples?
If you want several meters and we have stock of your size, we can
provide, customer need to bear the International express cost.
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within 24 hours. No matter working day or holiday