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Fluorinated ethylene propylene (FEP)

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Thermoplastic
Fluorinated ethylene propylene (FEP)
Property Value in metric unit Value in US unit
Density 2.15*10³ kg/m³ 134.2 lb/ft³
Modulus of elasticity 0.345 GPa 50 ksi
Flexural Modulus 0.62 GPa 90 ksi
Tensile strength 21 MPa 3000 psi
Elongation (max.) 300 % 300 %
Compressive strength 15 MPa 2200 psi
Impact strength, notched Izod no break J/m no break ft*lb/in
Hardness 55 Shore D 55 Shore D
Thermal expansion (20 ºC) 100*10-6 ºCˉ¹ 56*10-6 in/(in* ºF)
Thermal conductivity 0.20 W/(m*K) 1.4 BTU*in/(hr*ft²*ºF)
Melting point 270 ºC 518 ºF
Maximum work temperature 200 ºC 392 ºF
Dielectric constant 2.1 - 2.1 -
Dielectric strength 100 kV/mm 2500 V/mil
Electrical resistivity >1016 Ohm*m >1018 Ohm*cm

Applications: chemical processing equipment, heat exchangers, wire coating insulation, fiber optic, medical tubing.

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