0.02x100mm Copper Alloy Resistance Constantan Flat Strip and foil CuNi40
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.
Mechanical Properties
| Type | Electrical resistivity (20degreeΩ mm²/m) | temperature coefficient of resistance (10^6/degree) | Dens ity g/mm² | Max. temperature (°c) | Melting point (°c) |
| CuNi1 | 0.03 | <1000 | 8.9 | / | 1085 |
| CuNi2 | 0.05 | <1200 | 8.9 | 200 | 1090 |
| CuNi6 | 0.10 | <600 | 8.9 | 220 | 1095 |
| CuNi8 | 0.12 | <570 | 8.9 | 250 | 1097 |
| CuNi10 | 0.15 | <500 | 8.9 | 250 | 1100 |
| CuNi14 | 0.20 | <380 | 8.9 | 300 | 1115 |
| CuNi19 | 0.25 | <250 | 8.9 | 300 | 1135 |
| CuNi23 | 0.30 | <160 | 8.9 | 300 | 1150 |
| CuNi30 | 0.35 | <100 | 8.9 | 350 | 1170 |
| CuNi34 | 0.40 | -0 | 8.9 | 350 | 1180 |
| CuNi40 | 0.48 | ±40 | 8.9 | 400 | 1280 |
| CuNi44 | 0.49 | <-6 | 8.9 | 400 | 1280 |
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
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0.02x100mm CuNi40Mn1.5 Copper Nicr Alloy Resistance Constantan Ribbon foil CuNi40 Images
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