Ohmalloy Material Co.,Ltd
| Payment Terms | L/C, T/T, , Paypal |
| Supply Ability | 30000 KG per month |
| Delivery Time | 3-18 working days after payment confirmed |
| Packaging Details | Spool+paper case + wooden case/plastic packing+papre case+ wooden box outside(or customized) |
| Name | CuNi44 Constantan flat wire |
| Elongation | 25% |
| Resistivity | 0.49(at 20℃ (Ωmm2/m)) |
| Density (g/cm3) | 8.9 |
| Conductivity coefficient at 20℃ | 23WmK |
| Supply State | flat wire |
| Brand Name | OHMALLOY |
| Model Number | SP-CuNi44 |
| Certification | ISO9001:2015 |
| Place of Origin | China |
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Product Specification
| Payment Terms | L/C, T/T, , Paypal | Supply Ability | 30000 KG per month |
| Delivery Time | 3-18 working days after payment confirmed | Packaging Details | Spool+paper case + wooden case/plastic packing+papre case+ wooden box outside(or customized) |
| Name | CuNi44 Constantan flat wire | Elongation | 25% |
| Resistivity | 0.49(at 20℃ (Ωmm2/m)) | Density (g/cm3) | 8.9 |
| Conductivity coefficient at 20℃ | 23WmK | Supply State | flat wire |
| Brand Name | OHMALLOY | Model Number | SP-CuNi44 |
| Certification | ISO9001:2015 | Place of Origin | China |
| High Light | CuNi44 Constantan Flat Wire ，Cu56Ni44 Alloy Flat Wire ，Corrosion Resistance Constantan Flat Wire | ||
0.08mm*0.8mm CuNi44 Constantan flat wire high electrical resistance flat wire
The combination of negligible temperature coefficient and high resistivity makes the alloy particulary suitable for the winding of precision resistors.
OhmAlloy049 is manufactured from electrolytic copper and pure nickel.In finer wire sizes the alloy is designated as OhmAlloy49TC(Thermocouple).
OhmAlloy049 is a copper-nickel alloy (Cu56Ni44 alloy) characterized by high electrical resistance, high ductility and good corrosion resistance. It is suitable for use at temperatures up to 400°C Typical applications for OhmAlloy49 are temperature-stable potentiometers, industrial rheostats and electric motor starter resistances.
Normal composition%
| Nickel | 45 | Manganese | 1 |
| Copper | Bal. |
| |
Typical Mechanical properties(1.0mm)
| Yield strength | Tensile Strength | Elongation |
| Mpa | Mpa | % |
| 250 | 420 | 25 |
Typical Physical properties
| Density (g/cm3) | 8.9 |
| Electrical resistivity at 20℃ (Ωmm2/m) | 0.49 |
| Temperature factor of resistivity(20℃~600℃)X10-5/℃ | -6 |
| Conductivity coefficient at 20℃ (WmK) | 23 |
| EMF vs Cu(μV/℃ )(0~100℃ ) | -43 |
| Coefficient of thermal expansion | |
| Temperature | Thermal Expansion x10-6/K |
| 20 ℃- 400℃ | 15 |
| Specific heat capacity | |
| Temperature | 20℃ |
| J/gK | 0.41 |
| Melting point (℃) | 1280 |
| Max continuous operating temperature in air (℃) | 400 |
| 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 | ||
| OhmAlloy049 | good | good | good | good | good | good |
Style of supply
| Alloys Name | Type | Dimension | |
| OhmAlloy049W | Wire | D=0.03mm~8mm | |
| OhmAlloy049R | Ribbon | W=0.4~40 | T=0.03~2.9mm |
| OhmAlloy049S | Strip | W=8~200mm | T=0.1~3.0 |
| OhmAlloy049F | Foil | W=6~120mm | T=0.003~0.1 |
| OhmAlloy049B | Bar | Dia=8~100mm | L=50~1000 |
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 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.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter,Trading Company
Year Established:
2008
Total Annual:
4000000-6000000
Employee Number:
20~50
Ecer Certification：
Verified Supplier
Ohmalloy Material Co.,Ltd is a high-tech enterprise which specialized in making all kinds of alloy such as high resistance alloy, low-resistance copper nickel alloy, precision alloy, FeCrAl alloy and thermocouple Alloy. Ohmalloy Material Co.,Ltd have a full production line from melting, surface... Ohmalloy Material Co.,Ltd is a high-tech enterprise which specialized in making all kinds of alloy such as high resistance alloy, low-resistance copper nickel alloy, precision alloy, FeCrAl alloy and thermocouple Alloy. Ohmalloy Material Co.,Ltd have a full production line from melting, surface...
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