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Soft magnetic alloys

Osprey® Fe3Si

Osprey® Fe3Si is a ferritic soft-magnetic silicon steel with higher electrical resistivity and lower eddy current losses compared to Osprey® Fe1.5Si. It is typically used in electrical power transformers.

This metal powder is manufactured by Inert Gas Atomization (IGA), producing a powder with a spherical morphology which provides good flow characteristics and high packing density.

Technical data

Page updated Sep 18, 2023 8:31 AM CET (supersedes all previous editions)

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  • Chemical composition (nominal), %

    Fe
    Bal.
    C
    ≤0.03
    Mn
    ≤0.3
    Si
    3.0
    Cr
    Mo
    S
    ≤0.03
    P
    ≤0.03
    Co
    Ni
    Other
  • Powder characteristics and morphology

    Powder for Metal Injection Moulding (MIM)

    Osprey® MIM powder has a spherical morphology, resulting in high packing density. This enables the manufacture of feedstocks with high powder loading, which not only minimizes binder costs but also reduces part shrinkage during debinding and sintering. Spherical powder also has excellent flow characteristics, resulting in reduced tool wear and consistent mould filling.

    Osprey® MIM powder's low oxygen content allows better control of carbon and consistency during sintering. Low oxygen levels, together with high packing density, also facilitate faster sintering.

  • Particle size distribution

    Powder for Metal Injection Moulding (MIM)

    Osprey® metal powder for Metal Injection Moulding (MIM) is available in a wide range of particle size distributions, from under 5 μm up to 38 μm. The table shows our standard particle size distributions for MIM powders.

    Typical particle size distributions for Metal Injection Moulding (MIM)*
    Size (μm) D10 (μm) D50 (μm) D90 (μm)
    ≤ 38 5.5 13.0 31.0
    ≤ 32 5.0 12.0 29.0
    80% ≤ 22 4.5 11.5 27.0
    90% ≤ 22 4.0 10.5 22.0
    90% ≤ 16 3.5 8.0 16.0

    *Particle size measurements performed using a Malvern laser particle size analyzer, typical D10, D50 and D90 provided.

    Tailor-made particle size distributions are available on request. Contact us to discuss your specific requirements.

  • Testing

    All Osprey® metal powders are supplied with a certificate of analysis containing information on the chemical composition and particle size distribution. Information on other powder characteristics is available upon request.

  • Packaging

    A wide range of packaging options is available, from 5kgs plastic bottles to 250kg metal drums.

    5 kg (11 lbs) Plastic bottles
    6 kg (13 lbs) Plastic bottles
    10 kg (22 lbs) Plastic bottles
    20 kg (44 lbs) Metal cans
    100 kg (220 lbs) Steel drums
    150 kg (330 lbs) Steel drums
    250 kg (551 lbs) Steel drums
    All packaging materials are suitable for air, sea and road freight.

    Contact us for more information and to discuss your packaging requirements.

Disclaimer: Data and recommendations are for guidance only, and the suitability of a powder for a specific process or application can be confirmed only when we know the actual conditions. Continuous development may necessitate changes in technical data without notice. This datasheet is only valid for Osprey® powder.

Range of soft magnetic alloys

Osprey® Standards* Fe C Mn Si Cr Mo S P Co Ni Other
Fe3Si - Bal. ≤0.03 ≤0.3 3.0 - - ≤0.03 ≤0.03 - - -
Fe35Co0.2Si - Bal. ≤0.01 ≤0.25 ≤0.25 ≤0.7 - ≤0.03 ≤0.03 35.0 ≤0.7 - Fe35Co0.2Si
Fe1.5Si - Bal. ≤0.03 ≤0.3 1.5 - - ≤0.03 ≤0.03 - - - Fe1.5Si
Fe50Co0.2Si - Bal. ≤0.01 ≤0.25 ≤0.25 ≤0.7 - ≤0.03 ≤0.03 50.0 ≤0.7 - Fe50Co0.2Si
Fe7Si - Bal. ≤0.03 ≤0.3 7.0 - - ≤0.03 ≤0.03 - - - Fe7Si
Fe18Cr - Bal. ≤0.03 0.6 0.8 18.0 0.35 ≤0.03 ≤0.03 - - - Fe18Cr
Fe50Ni - Bal. ≤0.05 ≤0.5 ≤0.5 ≤0.5 - ≤0.03 ≤0.03 - 50.0 - Fe50Ni
Fe8Cr - Bal. ≤0.03 0.6 0.8 8.0 0.35 ≤0.03 ≤0.03 - - - Fe8Cr
Fe12Cr - Bal. ≤0.03 0.6 0.8 12.0 0.35 ≤0.03 ≤0.03 - - - Fe12Cr
Fe80Ni5Mo - Bal. - ≤0.5 ≤0.5 - 5.0 ≤0.03 ≤0.03 - 80.0 - Fe80Ni5Mo
Fe49Co2V - Bal. ≤0.05 ≤1.0 ≤1.0 - - ≤0.010 ≤0.015 49.0 - V 2.0 Fe49Co2V
Fe27Co0.2Si - Bal. ≤0.01 ≤0.25 ≤0.25 ≤0.7 - ≤0.03 ≤0.03 27.0 ≤0.7 - Fe27Co0.2Si

* Information about more standards is available in the datasheet for the respective alloy.

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