Precision Resistance Heating Wire CuNi23 Alloy Constantan Copper Nickel Wire
CuNi23 Alloy constantan copper nickel resistance heating wire
OhmAlloy30(Resistance heating wire and resistance wire)
(Common Name:CuNi23,NC30,Curpothal30)
OhmAlloy30 is a copper-nickel alloy (Cu77Ni23 alloy) with low resistivity for use at temperatures up to 300°C.
OhmAlloy30 is typically used for applications such as heating cables, fuses, shunts, resistors and various types of controllers.
Normal composition%
| Nickel | 23 | Manganese | 0.5 |
| Copper | Bal. |
Typical Mechanical properties(1.0mm)
| Yield strength | Tensile Strength | Elongation |
| Mpa | Mpa | % |
| 170 | 350 | 25 |
Typical Physical properties
| Density (g/cm3) | 8.9 |
| Electrical resistivity at 20℃ (Ωmm2/m) | 0.30 |
| Temperature factor of resistivity(20℃~600℃)X10-5/℃ | <16 |
| Conductivity coefficient at 20℃ (WmK) | 33 |
| EMF vs Cu(μV/℃ )(0~100℃ ) | -34 |
| Coefficient of thermal expansion | |
| Temperature | Thermal Expansion x10-6/K |
| 20 ℃- 400℃ | 17.5 |
| Specific heat capacity | |
| Temperature | 20℃ |
| J/gK | 0.380 |
| Melting point (℃) | 1150 |
| Max continuous operating temperature in air (℃) | 300 |
| Magnetic properties | non-magnetic |
Corrosion resistance performance
| Alloys | Working In atmosphere at 20℃ | Working at max temperature 200℃ | |||||
|
Air and oxygen contain gases |
gases with Nitrogen |
gases with sulfur oxidability |
gases with sulfur reductibility |
carburization | |||
| OhmAlloy30 | good | general | general | general | bad | good | |
Style of supply
| Alloys Name | Type | Dimension | ||
| OhmAlloy30W | Wire | D=0.06mm~8mm | ||
| OhmAlloy30R | Ribbon | W=0.4~40 | T=0.05~2.9mm | |
| OhmAlloy30S | Strip | W=8~200mm | T=0.1~3.0 | |
| OhmAlloy30F | Foil | W=6~120mm | T=0.005~0.1 | |
| OhmAlloy30B | Bar | Dia=8~100mm | L=50~1000 | |
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 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.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.