S-65-H Beryllium Nuclear Grade

Alternative and trade names
S-65-H
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Description

Pure beryllium metals S-65 and S-65-H are light weight with high strength. S-65 has the lowest impurity levels of commonly made grades of beryllium, which reduces the amount of transuranic elements, so that the material needs less storage time after being removed from reactors.


S-65 and S-65-H beryllium metals maintain their properties at elevated temperatures, thereby increasing usefulness in fusion energy applications over conventional graphite materials. These metals increase nuclear reactor efficiency and help reduce the hazardous waste production, which can help reactors run longer.


Nuclear reactors require high purity beryllium that offers unique properties. S-65 and S-65-H provide high neutron flux, making them ideal for neutron reflector and moderator applications. Other nuclear property advantages of these beryllium metals include:


  • Low neutron absorption
  • Reduced neutron kinetic energy in nuclear reactors
  • High neutron scattering cross section
  • Excellent neutron thermalization
  • High thermal conductivity under fusion conditions
  • Transparent to most forms of radiation
  • Superior cracking resistance under high heat flux thermal cycling
  • Maintains characteristics at elevated temperatures
  • This material data has been provided by Materion Brush GmbH.

    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

    PropertyTemperatureValueComment

    Bulk density

    23.0 °C

    1.85 g/cm³

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    for BeO amount of 0.9%

    Grain size

    15 μm

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    max.

    Mechanical

    PropertyTemperatureValue

    Elongation

    23.0 °C

    2 %

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    Tensile strength

    23.0 °C

    345 MPa

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    Yield strength Rp0.2

    23.0 °C

    207 MPa

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    Chemical properties

    PropertyValueComment

    Aluminium

    0.05 %

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    max.

    Beryllium

    99.2 %

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    min., BeO: 0.9% max

    Calcium

    5E-3 %

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    max.

    Carbon

    0.09 %

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    max.

    Chromium

    0.01 %

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    Cobalt

    5E-3 %

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    Copper

    0.03 %

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    max.

    Iron

    0.08 %

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    Lead

    5E-3 %

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    Magnesium

    0.01 %

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    Manganese

    5E-3 %

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    Molybdenum

    5E-3 %

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    Nickel

    0.03 %

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    Other

    0.04 %

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    max., other metallic impurities each

    Silicon

    0.05 %

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    Silver

    5E-3 %

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    Titanium

    0.03 %

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    Uranium

    0.02 %

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    Zinc

    5E-3 %

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    Zirconium

    0.03 %

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    Technological properties

    Property
    Application areas

    It is used for nuclear test reactors and fusion walls due to their neutron reflectivity, neutron kinetic energy absorption, neutron kinetic energy absorption and high purity. Other applications are: Neutron reflectors and moderators, Neutron filter assemblies, Nuclear test reactors and Medical isotope reactors

    Processing history

    Hot isostatic pressing