Polytetrafluoroethylene (PTFE)

Alternative and trade names
Teflon®
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Description

It helps architects push the boundaries of form and function. It helps keep vehicles on the road longer. And it helps protect equipment in extremely demanding operating conditions. PTFE can even be used as an additive to improve slip or wear characteristics in ink, plastics and lubricants. Its key features include:


  • Exceptional chemical resistance
  • Wide service temperature range
  • Low coefficient of friction
  • Low permeability
  • Long service life
  • Outstanding weather resistance
  • Properties

    General

    Density ρ

    2.13 - 2.23 g/cm³ at 20 °C

    Mechanical

    Elastic modulus E

    0.4 - 0.75 GPa at 20 °C

    Elongation A

    350 - 550 % at 20 °C

    Impact strength, Charpy notched Ivnot

    13 - 15 kJ/m² at 20 °C

    Impact strength, Charpy unnotched Iunnot

    no break

    Max allowed stress σmax

    20 - 35 MPa at 20 °C

    at 350-500% strain

    Thermal

    Coefficient of thermal expansion α

    1E-4 - 2E-4 1/K at 20 °C

    Flammability

    UL 94 V0

    Max service temperature, long Tmaxlong

    260 °C

    Max service temperature, short Tmaxshort

    300 °C

    Melting point Tm

    325 - 335 °C

    Specific heat capacity cp

    1000 J/(kg·K) at 20 °C

    Thermal conductivity λ

    0.25 W/(m·K) at 20 °C

    Electrical

    Dielectric constant εr

    2.1 [-] at 20 °C

    Electrical resistivity ρel

    1.00E+18 Ω·m at 20 °C

    Optical

    Transparency

    no

    Technological properties

    Application areas

    Pan-coating, body implants, high temperature capacitors, carriers for printed circuit boards, pistons

    Processing methods

    Extrusion, compression molding, coating

    This material data has been provided by M-Base.

    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.