Tefzel ® ETFE Specifications
GENERAL DESCRIPTION
Tefzel ® ETFE is a fluorocarbon-based
polymer. ETFE is an abbreviation for the chemical name Ethylene
TetrafluoroEthylene. and the Tefzel ® brand of
ETFE is manufactured only by DuPont. This material was introduced to provide
a material with both corrosion resistance and mechanical strength over a
wide temperature range. The fluoroplastic family offers plastics with high
chemical resistance, low and high temperature capability, resistance to
weathering, low friction, electrical and thermal insulation.
GENERAL PROPERTIES
Tefzel
® ETFE offers high purity,
excellent chemical resistance, good permeability resistance, and excellent
abrasion resistance over a temperature range of -300°F to +300°F (-185°C to
+150°C). Tefzel
® ETFE is available in sheet, rod and film forms.
It is also available in a fabric-backed sheet for construction of dual
laminate vessels or the lining of existing chemical vessels.
APPLICATIONS
- Process vessels -- tank construction and linings
- Wire and cables -- insulation and jacketing
- Cryogenic applications -- super-cold refrigeration components
- Valves -- linings, seats, seals
- Compressors & pumps - linings and components
- Films -- food packaging, pharmaceutical packaging, optical
recording, electroluminescent display panels
- Electrical components -- insulators, cable clamps
- Gaskets -- pressure, diaphragm, liquid gauge seals, fluid handling
- Bearings -- sleeve & thrust
- Stock shapes -- for machining components
| TYPICAL PROPERTIES of TEFZEL ®
ETFE |
| ASTM or UL test |
Property |
ETFE |
| PHYSICAL |
| D792 |
Density (lb/in³)
(g/cm³) |
0.061
1.7 |
| D570 |
Water Absorption, 24 hrs (%) |
< 0.01 |
| MECHANICAL |
| D638 |
Tensile Strength (psi) |
6,100 |
| D638 |
Tensile Modulus (psi) |
- |
| D638 |
Tensile Elongation at Break (%) |
300 |
| D790 |
Flexural Strength (psi) |
- |
| D790 |
Flexural Modulus (psi) |
145,000 |
| D695 |
Compressive Strength (psi) |
2,470 |
| D695 |
Compressive Modulus (psi) |
- |
| D785 |
Hardness, Shore D |
D67 |
| D256 |
IZOD Notched Impact (ft-lb/in) |
No Break |
| THERMAL |
| D696 |
Coefficient of Linear Thermal Expansion
(x 10 -5 in./in./°F) |
7.3 |
| D648 |
Heat Deflection Temp (°F / °C)
at 264 psi |
- |
| D3418 |
Melting Temp (°F / °C) |
512 / 267 |
| - |
Max Operating Temp (°F / °C) |
311 / 155 |
| C177 |
Thermal Conductivity
(BTU-in/ft²-hr-°F)
(x 10 -4 cal/cm-sec-°C) |
-
- |
| UL94 |
Flammability Rating |
V-0 |
| ELECTRICAL |
| D149 |
Dielectric Strength (V/mil) short time, 0.01" thick |
1,800 |
| D150 |
Dielectric Constant at 1 MHz |
2.5 |
| D150 |
Dissipation Factor at 1 MHz |
0.0060 |
| D257 |
Volume Resistivity (ohm-cm)at 50% RH |
10 17 |
NOTE: The information contained herein are typical values intended
for reference and comparison purposes only. They should NOT be used as a
basis for design specifications or quality control. Contact us for
manufacturers' complete material property datasheets.
All values at 73°F (23°C) unless otherwise noted.
Tefzel is a registered trademark of DuPont
