Model NO.: CuNi45
Tensile Strength (MPa): >390
Elongation Rate (%): >25
Volume Resistivity: 49.0(20oc)
Chemical Composition: Cu, Ni
Cetification: ISO9001
Products and Services: Small Order Accepted; Fast Delivery
Packing Detail: Coil (Plastic Spool) + Compressed Ply-Wooden Case
Trademark: Ualloy
Specification: RoHS, SGS
Origin: Zhejiang, China
HS Code: 74082290
 1. Description
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Constantan is a copper-nickel alloy usually consisting of 55% copper and 45% nickel. Also known as Eureka, Advance and Ferry. Its main feature is its resistivity which is constant over a wide range of temperatures. Other alloys with similarly low temperature coefficients are known, such as manganin (Cu86Mn12Ni2).
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Its resistivity is high enough to achieve suitable resistance values in even very small grids, and its temperature coefficient of resistance is not excessive. In addition, constantan is characterized by good fatigue life and relatively high elongation capability.Â
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       Chemical Content(%)
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Grade | Main Chemical composition (%) | ||||
CuNi45 | Ni | Mn | Cu | Fe | Si |
45 | 55 |
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     2. Properties
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Grade | Melting Point(ºC) | Density (g/cm3) | Tensile Strength (Mpa) | Elongation rate (%) | Volume resistivity (μΩ.cm) |
CuNi45 | 1220 | 8.8 | >390 | >25 | 49.0(20ºC) |
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3. Specification
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Foil:thickness:less than 0.05mm
   width: less than 200mm
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 4. Packing detail
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 1) Coil (plastic spool) + compressed ply-wooden case + palletÂ
 2) Coil (plastic spool) + carton + pallet Â
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5. Products and services
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1). Pass: ISO9001 certification, and SO14001cetification;
2). Fine after-sale services;
3). Small order accepted;
4). Fast delivery;
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