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Low Resistance Alloy C72150 Copper-Nickel Resistance Alloy Constantan Wire Featured Image
  • Low Resistance Alloy C72150 Copper-Nickel Resistance Alloy Constantan Wire

Low Resistance Alloy C72150 Copper-Nickel Resistance Alloy Constantan Wire

Short Description:

With low temperature coefficients of electrical resistance, resistance, and thus performance, is consistent regardless of temperature. Copper Nickel alloys mechanically boast good ductility, are easily soldered and welded, as well as have outstanding corrosion resistance. These alloys are typically used in high current applications requiring a high level of precision.

Common Name: Alloy 294, Cuprothal 294, Nico, MWS-294, Cupron, Copel, Alloy 45, Cu-Ni 102, Cu-Ni 44
Motor control, heating wires and cables; precision and vitreous resistors, potentiometers.


  • Grade: C72150
  • Max operating temp(uΩ/m at 20°C): 0.49
  • Resisivity (Ω/cmf at 68°F): 295
  • Max operating temp(°C): 400
  • Density(g/cm³): 8.9
  • Elongation(%): ≥25

    • Product Detail

    FAQ

    Product Tags

    Copper Nickel (CuNi) alloys are medium to low resistance materials typically used in applications with maximum operating temperatures up to 400°C (750°F).

    With low temperature coefficients of electrical resistance, resistance, and thus performance, is consistent regardless of temperature. Copper Nickel alloys mechanically boast good ductility, are easily soldered and welded, as well as have outstanding corrosion resistance. These alloys are typically used in high current applications requiring a high level of precision.

    Specifications
    Alloy Werkstoff Nr UNS designation DIN
    CuNi44 2.0842 C72150 17644

    Nominal Chemical Composition (%)
    Alloy Ni Mn Fe Cu
    CuNi44 Min 43.0 Max 1.0 Max 1.0 Balance

    Physical Properties (at room temperature)
    Alloy Density Specific Resistance
    (Electrical Resistivity)    		 Thermal Linear
    Expansion Coeff.
    b/w 20 – 100°C    		 Temp. Coeff.
    of Resistance
    b/w 20 – 100°C    		 Maximum
    Operating Temp.
    of Element
      g/cm³ µΩ-cm 10-6/°C ppm/°C °C
    CuNi44 8.90 49.0 14.0 Standard ±60 600
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