Winding Heating Resistance Wire Constantan / Copper Nickel / CuNi44 Material
Brand Name:OHMALLOY
Certification:ISO9001-2008
Model Number:cuni constantan
Minimum Order Quantity:20KG
Delivery Time:7-10 days
Payment Terms:L/C, T/T, , MoneyGram
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Shanghai Shanghai China
Address:
Room 311, No.1211, Mudanjiang Road, Baoshan district, Shanghai
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Product Details
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Product Details
Constantan( Ohmalloy 049)
(Common Name: CuNi45, NC50.Cuprothal, Alloy 294, Cuprothal 294,
Nico, MWS-294, Cupron, Copel, Alloy 45, Neutrology, Advance, CuNi
102, Cu-Ni 44, Konstantan,constantan.)
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.
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).
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 | bad | 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 |
Winding Heating Resistance Wire Constantan / Copper Nickel / CuNi44 Material
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