CuNi23 resistance alloy is one of copper nickel binary alloys, having low temperature coefficient of resistance. It is applied to make rheostat, shunt, controller and other low voltage electrical components with a maximum operating temperature of 300°C. Due to its good heat coefficient, this alloy is widely used in low temperature heating cable of automobile heating cushion, railway snow melting, etc.
Due to high tensile strength and increased resistivity values, the copper nickel alloy wires are the first choice for applications as resistance wires. With the different nickel amount in this product range, the characteristics of the wire can be chosen according to your requirements. Copper nickel alloy wires are available as bare wire, or enamelled wire with any insulation and self-bonding enamel. Furthermore, litz wire made of enamelled copper nickel alloy wire are available.
CuNi23Mn is a copper-nickel alloy (CuNi alloy) with medium resistivity for medium-low temperature resistances. The alloy is suitable for use at temperatures up to 400°C (750°F)
CuNi23Mn is very malleable and has a good resistance to corrosion until temperatures of 400°C. Ideal applications areas are all types of resistances used at low temperature.
CuNi23Mn is typically used in heating cables, fuses, resistors and various types of controllers.
Chemical Content, %
| Ni |
Mn |
Fe |
Si |
Cu |
Other |
ROHS Directive |
| Cd |
Pb |
Hg |
Cr |
| 23 |
0.5 |
- |
- |
Bal |
- |
ND |
ND |
ND |
ND |
Mechanical Properties
| Max Continuous Service Temp |
250ºC |
| Resisivity at 20ºC |
0.35%ohm mm2/m |
| Density |
8.9 g/cm3 |
| Thermal Conductivity |
16(Max) |
| Melting Point |
115ºC |
| Tensile Strength,N/mm2 Annealed,Soft |
270~420 Mpa |
| Tensile Strength,N/mm2 Cold Rolled |
350~840 Mpa |
| Elongation(anneal) |
25% (Max) |
| Elongation(cold rolled) |
2% (Max) |
| EMF vs Cu, μV/ºC (0~100ºC) |
-25 |
| Micrographic Structure |
austenite |
| Magnetic Property |
Non |
CuNi23Mn Tradenames:
Alloy 180, CuNi 180, 180 Alloy, MWS-180, Cuprothal 180, Midohm, HAI-180, Cu-Ni 23, Alloy 380, Nickel alloy 180
Resistance Alloy 180 - CuNi23Mn Sizes / Temper Capabilities
Condition: Bright, Annealed, Soft
Wire diameter 0.02mm-1.0mm packing in spool, big than 1.0mm packing in coil
Rod, Bar diameter 1mm-30mm
Strip: Thickness 0.01mm-7mm, Width 1mm-280mm
Enameled condition is available
FAQ
1. What's the minimum quantity customer can order?
If we have your size in stock, we can provide any quantity you want.
If we do not have, for spool wire, we can produce 1 spool, about 2-3kg. For coil wire, 25kg.
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 holidays.
