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CuNi44 copper-nickel resistance alloy constantan wire Featured Image
  • CuNi44 copper-nickel resistance alloy constantan wire
  • CuNi44 copper-nickel resistance alloy constantan wire

CuNi44 copper-nickel resistance alloy constantan wire

Short Description:

This copper-nickel resistance alloy, also known as constantan, is characterized by a high electrical resistance
coupled with a fairly small temperature coefficient of the resistance. This alloy also shows high tensile strength
and resistance towards corrosion. It can be used at temperatures of up to 600°C in air.


  • Certificate: ISO 9001
  • Size: Customized
  • Model: CuNi44
  • MOQ: 5KGS
  • Surface: Bright
  • Temperature: 600°C

    • Product Detail

    FAQ

    Product Tags

    Tankii CuNi44 offers high electrical resistivity and very low temperature coefficient of resistance (TCR). Due to its low TCR, it finds use in wire-wound precision resistors that can operate up to 400°C (750°F). This alloy is also capable of developing a high and constant electromotive force when coupled with copper. This property allows it to be used for thermocouple, thermocouple extension and compensating leads. It is easily soldered, welded,

    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
    Special ±20
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