3M™ Dyneon™ (PTFE Granules TF 1645)

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Free-flowing suspension PTFE for general compression moulding of applications like seals, shaped parts and automatically or isostatically moulded articles.

Special Features are:

  • Meets ASTM D 4894 Type IV, Grade 2 classification
  • Produced by suspension polymerisation
  • Good mould filling behaviour
  • Very good free-flowing properties
  • Good mechanical properties
  • Low shrinkage
  • Excellent chemical inertness
  • Low friction behaviour
  • Good flame retardance
  • Exceptional temperature resistance

  • Typical Properties:

    PTFE moulding powder with very good free-flowing and feeding properties consisting of relatively large particles with high bulk density.

    This material data has been provided by Matmatch.

    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.

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    Bulk density

    23.0 °C

    0.84 g/cm³

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    DIN EN ISO 60


    23.0 °C

    2.15 g/cm³

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    DIN EN ISO 12086

    Particle size

    450000 nm

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    ISO 13320, average value



    Elastic modulus

    23.0 °C

    0.6 GPa

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    DIN EN ISO 527


    23.0 °C

    400 %

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    DIN EN ISO 527-3, 0.2 mm film

    Hardness, Shore D

    23.0 °C

    56 [-]

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    DIN EN ISO 868

    Tensile strength

    23.0 °C

    37 MPa

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    DIN EN ISO 527-3, 0.2 mm film



    Coefficient of thermal expansion

    100.0 °C

    1.2E-4 1/K

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    DIN 53 752, from 30°C to the mentioned temperature

    200.0 °C

    1.4E-4 1/K

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    DIN 53 752, from 30°C to the mentioned temperature

    260.0 °C

    1.7E-4 1/K

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    DIN 53 752, from 30°C to the mentioned temperature

    Thermal conductivity

    23.0 °C

    0.22 W/(m·K)

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    DIN 52612


    V-0 UL94



    Dielectric strength

    23.0 °C

    55 kV/mm

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    DIN EN ISO 12086, 0.2 mm film

    Electrical resistivity

    23.0 °C

    1.00E+16 Ω·m

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    IEC 60093

    Surface resistivity

    23.0 °C

    1.00E+17 Ω/sq

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    IEC 60093

    Rheological Properties



    23.0 °C

    2.5 %

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    Internal Dyneon method, Cylinder 45 mm diameter

    Technological properties

    Application areas

    3MTM DyneonTM PTFE Granules TF 1645 is a free-flowing compression moulding powder for applications like shaped parts, moulded cylinders or blocks, automatically and isostatically moulded articles – e.g. lined pipes or valves – and for the production of semi-finished products.