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Constantan Wires or Strips We are offering a wide range of Constantan Wires or Strips which is made as per industrial standards. Our highly advanced manufacturing unit is capable of meeting all high-end demands of customers and procuring them finest variety of products. We also ensure that products offered by us are flawless and capable of performing efficiently. With below given technical details Constantan Wires or Strips can be availed. Constantan (CuNi 44 Alloy): A Copper-Nickel alloy. High specific resistance alloy used in wire-wound precision resistors, potentiometers, volume control devices, winding heavy-duty industrial rheostats and electric motor resistances.
Also used as thermocouple alloy with Copper (Type T), Iron (Type J), and Ni-Cr (Type E). It is available with grade wires and extension wires.
Condition of Supply Constantan (CuNi 44 Alloy) is supplied in the following conditions:
- Cold Drawn, Special Temper.
- Cold Drawn, Annealed.
- Straightened and Cut Lengths.
Main usage: 1)wire-wound precision resistors,volume control devices,etc 2)low temperature resistance heating applications 3)winding heavy-duty industrial rheostats and electric motor starter resistence Resistivity: 0.49 ohm. Mm2/m German material code:2.0842 Constantan alloy strip CuNi44 Resistance constantan strip can be used to make wire-wound precision resistors, volume control devices,etc. CuNi44 Resistance constantan strip is universally known as Constantan or Konstantan, its high specific resistance and negligible temperature coefficient of resistance are its most important attributes. For others, the fact that CuNi44 offers good ductitility, is easily soldered and welded and has good resistance to atmospheric corrosion is more ignificant. Form of delivery: CuNi44 is supplied in the form of wires with dimensions from 0.03 to 6.0mm, in bare condition.Enamelled wires are available in dimensions between 0.09 and 1.0mm. CuNi44 can also be supplied in the form of stranded wire, ribbon,flat wire and rods. Plz contact us if needed. Nominal Composition
| Alloy |
Ni% |
Mn% |
Fe% |
Cu% |
| CuNi 44 Alloy |
Min 43.0 |
Max 1.0 |
Max 1.0 |
Bal. |
Properties
Specific Resistance
(µ ©-cm) |
Density
(g/cm‚³) |
Linear Expansion Coeff.
(T=20-100 °C) |
Maximum Operating
Temperature of Element
(°C) |
Temperature Coeff of
resistance (/°C)
Temp range 20-100°C |
| 49 |
8.9 |
14 |
600 |
+ 20/ + 60 |
Size Range
Wire: 12.0 mm diameter to 0.15mm diameter.
Strip: Width 0.4-80 mm, Thickness: 0.10 and above.
Or as per specified resistance.
Typical Tensile Strength
| Alloy |
Constantan |
Tensile strength
Min-Max (N/mm²) |
420-520 |
Elongation %
(Approx.: Annealed) |
25 |
Note: Other Grades of nickel-copper resistance alloys are also available. Please contact us for more information.
 
 
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