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AlBeCast 920® Composite – Lightweight, High-Strength Al–Be Metal Matrix for Superior Performance

Materion's AlBeCast® product line is a family of investment cast aluminum-beryllium metal matrix composites that provides designers a net-shape product. Advantages over aluminium A356.0:

  • ~22% lower density
  • ~3 times stiffer (modulus of elasticity in tension)
  • Up to 10 times better in damping coefficient
  • ~40% lower in coefficient of thermal expansion (CTE)
  • ~50% higher specific heat
  • ~28% higher thermal conductivity


    • Advantages over beryllium:

  • ~3 times greater ductility than hot pressed beryllium with greater damage tolerance
  • Castable for complex and precise net shape configurations
  • Weldable for defect repair
  • Reduced machining and scrap generation
  • Reduced environmental processing concerns resulting from reduced waste
  • Does not require chemical etching
  • Reduced material usage
  • Reduced cost

    • Properties

    General

    PropertyTemperatureValue

    Density

    23.0 °C

    2.17 g/cm³

    Mechanical

    PropertyTemperatureValueComment

    Compressive yield strength

    23.0 °C

    226.1 MPa

    Elastic modulus

    23.0 °C

    193 GPa

    Elongation

    23.0 °C

    3 %

    Fatigue strength

    23.0 °C

    117.2 MPa

    10⁷ cycles, R=-1, Kt=1

    Poisson's ratio

    23.0 °C

    0.2 [-]

    Shear strength

    23.0 °C

    247.5 MPa

    Pin Double Shear Strength

    Tensile strength

    23.0 °C

    289.6 MPa

    Yield strength Rp0.2

    23.0 °C

    213.7 MPa

    Thermal

    PropertyTemperatureValue

    Coefficient of thermal expansion

    23.0 °C

    1.42E-5 1/K

    Specific heat capacity

    23.0 °C

    1250 J/(kg·K)

    Thermal conductivity

    23.0 °C

    105.5 W/(m·K)

    Electrical

    PropertyValue

    Specific Electrical conductivity

    40 % IACS

    Chemical properties

    PropertyValueComment

    Aluminium

    Balance

    Beryllium

    61.1 - 68.6 %

    Cobalt

    0.65 - 1.35 %

    Germanium

    0.55 - 0.95 %

    Iron

    0.45 %

    max.

    Nickel

    0.2 %

    max.

    Silicon

    0.2 %

    max.

    Silver

    2.65 - 3.35 %

    Technological properties

    Property

    Composite material

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  • Resin
  • fiber
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