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Product Summary of Constantan®

An alloy of copper and nickel. Its main feature is that it exhibits constant electrical resistivity over a wide temperature range and has good fatigue life. These two combined properties make this an ideal material for use as a strain gauge alloy.

Characteristics of Constantan® include:

  • Constant electrical conductivity over a broad temperature range
  • Good fatigue life

Forms and Availability of Constantan®

Please find below a list of our standard stock dimensions. Of course, we are very often able to supply alternative dimensions.


Grade: Cu55/Ni45

Diameter: 5 - 100mm

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Grade: Cu55/Ni45

Thickness: 0.0125 - 5mm

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Grade: Cu55/Ni45

Diameter: 0.5 - 5mm

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What quantities are listed in our on-line catalog?

For large quantities, please request a quote using the links above. For small quantities with rapid delivery, please consult the following catalog pages:

Constantan® (Cu55/Ni45)