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A Complete Guide on Ethylene Tetrafluoroethylene (ETFE)

Ethylene Tetrafluoroethylene (ETFE) is a fluorine-based plastic designed to have high corrosion resistance and strength over a wide temperature range. Thanks to its special chemical and physical properties, ETFE is widely applied in the chemical, electrical/electronic, construction, architectural, and automotive industries.

Become an expert by learning some basic information about ETFE, what are the key features & properties, its popular applications and conditions to process this polymer material!

Let’s first start by understanding fluoropolymers...

ETFE Properties and Their Values


Property Value
Dimensional Stability
 Coefficient of Linear Thermal Expansion 6 - 9 x 10-5 /°C
 Shrinkage 3 - 4 %
 Water Absorption 24 hours 0.03 %
Electrical Properties
 Dielectric Constant 2.6 
 Dielectric Strength 7.87 kV/mm
 Dissipation Factor 6 - 100 x 10-4
 Volume Resistivity 15 - 17 x 1015 Ohm.cm
 Fire Performances
 Fire Resistance (LOI) 30 %
 Flammability UL94 V0
Mechanical Properties
 Elongation at Break 100 - 300 %
 Flexibility (Flexural Modulus) 0.8 - 1.4 GPa
 Hardness Rockwell M 1 - 10 
 Hardness Shore D 70 - 75 
 Stiffness (Flexural Modulus) 0.8 - 1.4 GPa
 Strength at Break (Tensile) 45 MPa
 Strength at Yield (Tensile) 42 MPa
 Toughness (Notched Izod Impact at Room Temperature) 999 J/m
 Young Modulus 0.8 GPa
Optical Properties
 Transparency (% Visible Light Transmission) 95 %
 Physical Properties
 Density 1.7 g/cm3
 Radiation Resistance
 Gamma Radiation Resistance Good
 UV Light Resistance
 Service Temperature
 Ductile / Brittle Transition Temperature -100 °C
 HDT @0.46 Mpa (67 psi) 105 °C
 HDT @1.8 Mpa (264 psi) 70 - 100 °C
 Max Continuous Service Temperature 140 - 155 °C
 Min Continuous Service Temperature -100 °C
Chemical Properties
 Acetone @ 100%, 20°C Satisfying
 Ammonium hydroxide @ 30%, 20°C Satisfying
 Benzene @ 100%, 20°C Satisfying
 Butylacetate @ 100%, 20°C Satisfying
 Chloroform @ 20°C Satisfying
 Concentrated acids @ 20°C Satisfying
 Concentrated acids @ hot conditions
 Dioctylphtalate @ 100%, 20°C Satisfying
 Ethanol @ 96%, 20°C
 Glycerol @ 100%, 20°CSatisfying
 Hydrogen peroxide @ 3%, 20°CSatisfying
 Kerosene @ 20°CSatisfying
 Methanol @ 100%, 20°C Satisfying
 Methylethyl ketone @ 100%, 20°C
 Mineral oil @ 20°C Satisfying
 Phenol @ 20°C Satisfying
 Silicone oil @ 20°C Satisfying
 Sodium hydroxide @ 10%, 20°C Satisfying
 Sodium hypochlorite @ 10%, 50°C Satisfying
 Sodium hypochlorite @ 20%, 20°C
 Toluene @ 20°C Satisfying
 Xylene @ 20°C

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