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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
  • Ashby charts

    See where Polytetrafluoroethylene (PTFE) falls on the material property chart for Density against Elastic modulus in your materials selection and design process. Our Ashby charts are interactive with more technical data upon clicking. Sign up to get access to this premium feature for free.

    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

    Show Polytetrafluoroethylene (PTFE) materials with Elastic modulus of 0.4 - 0.75 GPa at 20 °C

    Elongation

    A

    350 - 550 % at 20 °C

    Show Polytetrafluoroethylene (PTFE) materials with Elongation of 350 - 550 % at 20 °C

    Impact strength, Charpy notched

    Ivnot

    13 - 15 kJ/m² at 20 °C

    Show Polytetrafluoroethylene (PTFE) materials with Impact strength, Charpy notched of 13 - 15 kJ/m² at 20 °C

    Impact strength, Charpy unnotched Iunnot

    no break

    Tensile strength

    Rm

    20 - 35 MPa at 20 °C

    Show Polytetrafluoroethylene (PTFE) materials with Tensile strength of 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

    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.