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Constantan Resistance Wire Constantan is an important alloy largely used in many manufacturing and servicing industries. We are offering a wide variety of Constantan Resistance Wire which is highly used for various applications across the industries. For manufacturing these wires finest quality raw materials are used. With below given specifications and chemical composition Constantan Resistance Wire is available. Additional Description:
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.
Nominal Composition
| Alloy |
Ni% |
Mn% |
Fe% |
Cu% |
| CuNi 44 Alloy |
Min 43.0 |
Max 1.0 |
Max 1.0 |
Bal. |
Properties
Specific Resistance
(µ Ω-cm) |
Density
(g/cm³) |
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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