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DEF STAN 02-834 / NES 834 Bronze

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Description

This aluminium silicon bronze has similar attributes to the other aluminium bronzes, with a 2% silicon addition to enhance the material strength, corrosion resistance and impact strength whilst also improving the alloy machinability. As an MoD (Navy) specification, this material is subject to special requirements including impact properties and a controlled low magnetic permeability level of <1.05. It shows the following features and properties:


  • High strength and toughness
  • Excellent corrosion resistance
  • High impact strength
  • Excellent wear resistance
  • Very low magnetic permeability
  • Good machinability
  • Excellent cryogenic properties
  • 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

    7.8 g/cm³

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    Mechanical

    PropertyTemperatureValue

    Charpy impact energy, V-notch

    23.0 °C

    33 J

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    Elongation

    23.0 °C

    9 - 20 %

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    Tensile strength

    23.0 °C

    515 - 620 MPa

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    Yield strength Rp0.2

    23.0 °C

    220 - 310 MPa

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    Thermal

    PropertyTemperatureValueComment

    Coefficient of thermal expansion

    23.0 °C

    1.8E-5 1/K

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    for 0-300°C

    Melting point

    980 - 1010 °C

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    Thermal conductivity

    23.0 °C

    45 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 - 8 % IACS

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    Magnetic

    PropertyTemperatureValue

    Relative magnetic permeability

    23.0 °C

    1 [-]

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    Chemical properties

    PropertyValueComment

    Aluminium

    6 - 6.4 %

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    Copper

    Balance

    Iron

    0.5 - 0.7 %

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    Manganese

    0.5 %

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    max.

    Silicon

    2 - 2.4 %

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    Technological properties

    Property
    Application areas

    Offshore & marine: High strength and non-magnetic fasteners and components;Other: Fasteners, safety tooling, valve components, non-magnetic parts, marine hardware, gears, bearings and bushes and instrumentation components

    Corrosion properties

    Excellent corrosion resistance

    General machinability

    Good machinability