Best-selling Copper Nickel Alloy 6J40 Constantan Resistance Wire
Description:
Keywords: CuNi44 / Cuprothal 294 / Cupron / Copper Nickel Alloy / Alloy 294 / Cuprothal 49 / Nico / MWS-294 / Copel / Alloy 45 / Neutrology / Advance / Eureka / CuNi 102 / Cu-Ni 44 / Konstantan / Constantan / NC050 / CN49W / CN49R / CuNi40 / Ni45cu55 / Cupro-Nickel Resistance Wire / 45/55 Ni-Cu Constantan Strip / Cupro Nickel Alloy Foil and Strip / 6J40 GB/T 2903-1998
Constantan is CuNi40, also named 6J40, it is a kind of copper-based resistance alloy which is mainly made up of copper and nickel. It has the low resistance temperature coefficient, wide working temperature scope (500℃ below), good machining property, anti-corrosive and easy brazed welding property.
The alloy is non-magnetic. It is used for electrical regenerator's variable resistor and the strain resistor potentiometers, heating wires, heating cables and mats. Ribbons are used for heating of bimetals. Another field of application is manufacturing of thermocouples because it develops a high electromotive force (EMF) in association with others metals.
Forms Available: Wire, Strip.
Limiting Chemical Composition (%):
| Constantan / 6J40 | P | S | C | Ni | Mn | Fe | Al | Cu |
| Min | 39.0 | 1.00 | Bal | |||||
| Max | 0.02 | 0.02 | 0.10 | 41.0 | 2.00 | 0.5 | 0.1 |
Physical properties:
| Density: | 8.9 g/cm3 |
| Resistivity (20℃) : | 0.48±0.03 (µΩ·m) |
| TCR: | 0~+40 (a×10-6 ℃) |
| Operating temperature: | 0~400℃ |
| Tensile Strength | 390~450MPa |
| Elongation: | 12~32% |
| Melting point: | 1200-1260℃ |
| Coefficient of thermal conductivity: | 19.6 W/ (m·K) |
Applications:
It is suitable for electrical resistors, potentiometers, heating wires, heating cables and underground heating mesh, braiding and shielding in flexible coaxial cable and communication cable, a variety of audio and video cable, vehicle signal cable, network cable, data transmission cables and so on.
Features:
1. Good resistance to corrosion
2. Good malleability performance
3. Good heating resistance
4. Easy to be processed and lead welded
5. Constant resistivity over a wide range of temperatures
6. Constantan is characterized by good fatigue life and relatively high elongation capability.
Contact Us:
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E-mail: david@brilliance-alloy.com
Postal Code: 213131
Address: Longfu Town, Xinbei District, Changzhou City, Jiangsu Province, China
Website: www.brilliance-alloy.com