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CHROMZIRC-3 Copper Alloy

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Description

2.1291 (CuCr) is a copper chromium alloy with the outstanding electrical and heat transfer properties of copper but without the drawbacks of being soft and ductile. The addition of a small amount of chromium ensures its high strength, especially after suitable heat treatment that achieves its good mechanical properties. It shows the following features and properties:


  • High electrical conductivity
  • High thermal conductivity
  • High strength
  • Resistance to softening at elevated temperatures
  • Equivalent Materials

    This material data has been provided by Matmatch.

    "Typical" values were obtained via a literature search. "Predicted" values were imputed via artificial intelligence technology. While we have placed significant efforts in ensuring data accuracy, "typical" and "predicted" data should be considered indicative and verified by appropriate material testing. Please do contact us if additional information on the the predicted data method is required.
    All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
    Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

    Ashby charts

    Properties

    Mechanical

    PropertyTemperatureValue

    Elongation

    23.0 °C

    20 %

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    Hardness, Brinell

    23.0 °C

    140 [-]

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    Hardness, Vickers

    23.0 °C

    140 [-]

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    Tensile strength

    23.0 °C

    450 MPa

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    Yield strength

    23.0 °C

    400 MPa

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    Chemical properties

    PropertyValue

    Chromium

    1 %

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    Copper

    Balance

    Zirconium

    0.1 %

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    Technological properties

    Property
    Application areas

    Electrical: Switchgear components, circuit breaker parts, rotating electrical machinery, electrical and thermal conductors;Chemical processing: Turbine generators, current-carrying arms and shafts for process plants;Other: Resistance welding, electrodes, shafts, electrode holders, seam welding wheels and flash or butt welding dies