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Product Details:
Payment & Shipping Terms:
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| Material: | Cu-Ni | Type: | Strip |
|---|---|---|---|
| Color: | Copper | Delivery Time: | 7-20Days |
| Brand: | Ohmalloy | ||
| High Light: | co ni alloy,copper nickel alloy |
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Product Details
Grade: Constantan Resistance Alloy (Ohmalloy49)
Chemical Composition: Ni:44% Cu: Rest%
Max. continuous service temp. of element(°C) :400degrees
Resistivity at 20ºC(μΩ·m):0.49 ohm mm2/m
Density(g/cm3): 8.9
NiCr series: CuNi1;CuNi2;CuNi6;CuNi8;CuNi10;CuNi14;CuNi19;
CuNi23;CuNi30;CuNi34;CuNi40(Constantan);Manganin
Chemical Composition and Main Property of Cu-Ni Low Resistance Alloy
CommonName:CuNi45,NC50,Cuprothal,Alloy294,NicoMWS-294Cupron, 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 |
| Copper | Bal |
| Manganese | 1 |
| Yield Strength |
Tensile Strength |
Elogation |
| Mpa | Mpa | % |
| 250 | 420 | 25 |
Typical Physical properties
| Density(g/cm) | 8.9 |
| Electrical resisitivity at20 (Ωmm2/m) | 0.49 |
| Temperature factor of resistivity(20℃~600℃)X10-5/℃ | <10 |
 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
| Working in atomsphere at 200 | good |
|
Air and oxygen contain Gases |
good |
| gases with Nitrogen | good |
|
gases with sulfur oxidability |
good |
|
gases with sulfur oxidability |
bad |
| carburization | good |
Style of supply
| Alloys Name | Type | Dimension |
| OhmAlloy049W | Wire | D=0.06mm~8mm |
| OhmAlloy049R | Ribbon |
W=0.4~40mm T=0.05~2.9m |
| OhmAlloy049S | Strip |
W=8~200mm T=0.1~3.0 |
| OhmAlloy049F | Foil |
W=6~120mm T=0.005~0.1 |
| OhmAlloy049B | Bar |
Dia=8~100mm L=50~1000 |
Contact Person: Mr. Qiu
Tel: +8613795230939
