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| Product Type: | Sheet |
| Material: | Precision Alloy |
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LORK is a alloy manufacturer with 20 years of manufacturing experience.
Copper Nickel Alloy is mainly made of copper and nickel. The copper and nickel can be melted together no matter what percentage. Normally the resistivity of CuNi alloy will be higher if the Nickel content is larger than Copper content. From CuNi1 to CuNi44, the resistivity is from 0.03μΩm to 0.49μΩm. That will help the resistor manufacture choosing the most suitable alloy wire.
Constantan is CuNi40,also named 6J40,it is a 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 machiningproperty,anti-corrosive and easy braze welding.
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.
Copper nickel alloy series:Constantan CuNi40 (6J40), CuNi1, CuNi2, CuNi6, CuNi8, CuNi10, CuNi14, CuNi19, CuNi23,CuNi30, CuNi34, CuNi44.
Precision Alloy 6J40 Applications
- Low voltage circuit breakers,
- Thermal overload relays
- Low voltage electrical products
| *37329 | % | *30967 | *30827; | *38221; | *30899 | *38192; | *30789 | *38108 | 38081; | *38109 |
| 6J40 | (a) | td> | td> | 39 | td> | 1 | 20313; | td> | td> | |
| (c) | 0.020 | 0.020 | 41 | 0.10 | 2 | 0.10 | 37327; | 0.5 | 001 |
| density | 8.9 g/cm3 | resistivity(20ºC) | 0.48 μΩ·m |
| melting point | 1200-1260ºC | thermal conductivity | 19.6 W/(m·K) |
| Alloy state | tensile strengthσb (Mpa) |
Elongatio nA5 % |
| 6J40 | ≥280 | ≥15 |
This alloy has the following properties:
6j40 alloy, also known as constantan, is a resistance alloy mainly composed of copper and nickel. Features: it has low resistance temperature coefficient, wide use temperature range (below 480 ºC), good processing performance and good welding performance
Metallographic structure of 6j40:
6j40 alloy is austenitic
The application fields of 6j40 include:
6j40 alloy is suitable for use in AC circuit, as precision resistance, sliding resistance, resistance strain gauge, etc., and can also be used for thermocouple and thermocouple compensation wire material
Products of our company:
Hot rolled bar of wire and wire strip
Q1: Do you accept the trial order ?
A1: Yes,if we have the exactly size in stock.we can delivery even 1 piece/meter .
Q2: Can I have free sample before making orders?
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