UNS C63000 / AMS 4640 Bronze

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Description

2.0966 (CuAl10Ni5Fe4) most popular American grade of nickel aluminum bronze with a chemical composition of approximately 10% aluminium, 5% nickel and 3% iron, is readily hot worked and offers a good machinability. The alloy displays good erosion and cavitation resistance in seawater and brackish water, together with a good resistance to dilute sulphuric, hydrochloric and non-oxidising acids. Columbia Metals stocks C63000 in the HR50 condition to meet the requirements of AMS4640. It shows the following features and properties:


  • Very good strength and toughness
  • High resistance to corrosion and erosion
  • Retention of properties at cryogenic temperatures
  • Excellent resistance to shock, wear and abrasion
  • Spark resistance
  • Good fabrication and welding properties
  • Retention of properties at cryogenic temperatures
  • Related Standards

    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

    General

    PropertyTemperatureValue

    Density

    23.0 °C

    7.6 g/cm³

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    Mechanical

    PropertyTemperatureValue

    Elongation

    23.0 °C

    5 - 12 %

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    Tensile strength

    23.0 °C

    550 - 760 MPa

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    Yield strength Rp0.2

    23.0 °C

    275 - 415 MPa

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    Thermal

    PropertyTemperatureValueComment

    Coefficient of thermal expansion

    23.0 °C

    1.7E-5 1/K

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    for 0-300°C

    Melting point

    1050 - 1070 °C

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    Thermal conductivity

    23.0 °C

    38 - 46 W/(m·K)

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    Electrical

    PropertyTemperatureValue

    Electrical conductivity

    23.0 °C

    4.06E+6 - 5.22E+6 S/m

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    Specific Electrical conductivity

    7 - 9 % IACS

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    Magnetic

    PropertyTemperatureValue

    Relative magnetic permeability

    23.0 °C

    1 [-]

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    Chemical properties

    PropertyValueComment

    Aluminium

    9 - 11 %

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    Copper

    Balance

    Iron

    2 - 4 %

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    Manganese

    1.5 %

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    max.

    Nickel

    4 - 5.5 %

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    Silicon

    0.25 %

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    Technological properties

    Property
    Application areas

    Offshore & marine: Marine fasteners, hardware and fittings;Aerospace: Landing gear components, thrust washers, gears, control bushes, faucet balls, springs and worm wheels;Other: Non-sparking safety tooling, valve stems and seats, wear plates, welding clamps, valve spindles and components, fasteners and bearing bushes

    Corrosion properties

    High resistance to corrosion and erosion

    General machinability

    Good machinability

    Hot forming

    Easily hot worked