Copper Nickel Alloy Foil Constantan Strip/CuNi40 Tape/ CuNi44 Alloy
foil 0.05x300mm
Constantan
Product Details:
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
instruments.
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, %
| Ni | Mn | Fe | Si | Cu | Other | ROHS Directive |
| Cd | Pb | Hg | Cr |
| 40 | 1.5 | - | - | Bal | - | ND | ND | ND | ND |
Mechanical Properties
| Max Continuous Service Temp | 500℃ |
| Resisivity at 20℃ | 0.48±5%ohm mm2/m |
| Density | 8.88 g/cm3 |
| Thermal Conductivity 20℃,W/(m. ℃) | 22.9 |
| Melting Point | 1280℃ |
| Tensile Strength,N/mm2 Annealed,Soft | 390 Mpa |
| Tensile Strength,N/mm3 Cold Rolled | 685~980 Mpa |
| Elongation(anneal) | 15%(Min) |
| Elongation(cold rolled) | |
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.
FAQ:
1. What's the minimum quantity customer can order?
If we have your size in stock, we can provide any quantity you
want.
2. How can you pay for small sample amount?
We have Western union account, wire transfer for sample amount also
ok.
3. Customer do not have express account. How will us arrange the
delivery for sample order?
Just need to provide your address information, we will check the
express cost, you can arrange the express cost together with sample
value.
4. What's our payment terms?
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
detailed requirements.
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.
6. What's our working time?
We will give you reply through email/phone Online contact tool
within 24 hours. No matter working day or holiday
