Polytetrafluoroethylene (PTFE)

Properties

Compare
Density
2.2 g/cm3, or 130 lb/ft3
Elastic (Young's) Modulus
0.35 GPa, or 0.050 106 psi
Flexural Modulus
0.3 GPa, or 0.043 106 psi
Glass Transition Temperature
-35 °C, or -31 °F
Heat Deflection Temperature
At 1.82 MPa (264 psi)
55 °C, or 130 °F
Heat Deflection Temperature
At 455 kPa (66 psi)
120 °C, or 240 °F
Maximum Temperature
Typical Guideline
250 °C, or 480 °F
Maximum Temperature
No-Load Shape Stability
290 °C, or 550 °F
Maximum Temperature
Onset of Melting (Solidus)
325 °C, or 617 °F
Maximum Temperature
Decomposition
Specific Heat Capacity
Conventional
1050 J/kg-K
Specific Heat Capacity
Volumetric
2300 103 J/m3-K
Speed of Sound
12 103 m/s, or 39 103 ft/s
Stiffness-to-Weight Ratio
Flexural
0.13 MN-m/kg
Stiffness-to-Weight Ratio
Tensile
0.15 MN-m/kg
Strength-to-Weight Ratio
Tensile, Ultimate
10 kN-m/kg
Tensile Strength
Ultimate
23 MPa, or 3.3 103 psi
Tensile Strength
Ultimate, 100°C (210°F)
Tensile Strength
Ultimate, 200°C (390°F)
Thermal Conductivity
Ambient
0.24 W/m-K
Thermal Expansion
20 to 100°C
115 µm/m-K
Water Absorption
After 24 Hours
0.01 %

See Also

Charles A. Harper (editor), Modern Plastics Handbook, 1999.


J. A. Brydson, Plastics Materials, 7th ed., 1999 (link).


Michael L. Berins (editor), SPI Plastics Engineering Handbook of the Society of the Plastics Industry, Inc., 5th ed., 2000.

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