Chemours Teflon™ Type C-20, both sides cementable FEP Film

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Chemours Teflon™ Type C-20, both sides cementable FEP Film
Categories:	Polymer; Film; Thermoplastic; Fluoropolymer; Fluorinated Ethylene Propylene (FEP)
Material Notes:	Teflon™ FEP film is a transparent, thermoplastic film that can be heat sealed, thermoformed, vacuum formed, heat bonded, welded, metalized, and laminated to many other materials, as well as used as an excellent hot-melt adhesive. This wide variety of fabrication possibilities combines with the following important properties to offer a unique balance of capabilities not available in any other plastic film: Chemical Compatibility, Electrical Reliability, Wide Thermal Range, Mechanical Toughness, Long Time Weather ability, and Reliability. Information provided by Chemours.
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Physical Properties	Metric	English	Comments

Density	2.15 g/cc	0.0777 lb/in³	ASTM D1505
Water Absorption	<= 0.010 % @Time 86400 sec	<= 0.010 % @Time 24.0 hour	ASTM D570
Moisture Absorption	<= 0.0100 %	<= 0.0100 %
Specific Surface Area	0.0038 m²/g	0.0038 m²/g
	0.0090 m²/g	0.0090 m²/g
	0.018 m²/g	0.018 m²/g
Water Vapor Transmission	6.21 g/m²/day	0.400 g/100 in²/day	ASTM E96
Oxygen Transmission	11600 cc-mm/m²-24hr-atm	29500 cc-mil/100 in²-24hr-atm	ASTM D1434
Nitrogen Transmission	5000 cc-mm/m²-24hr-atm	12700 cc-mil/100 in²-24hr-atm	ASTM D1434
Carbon Dioxide Transmission	25900 cc-mm/m²-24hr-atm	65800 cc-mil/100 in²-24hr-atm	ASTM D1434
Hydrogen Sulfide Transmission	34100 cc-mm/m²-24hr-atm	86600 cc-mil/100 in²-24hr-atm	ASTM D1434
Permeability	0.31	0.31	Carbon Tetrachloride. g/100 in2·24 hr.; ASTM E96
	0.41	0.41	Acetic Acid. g/100 in2·24 hr.; ASTM E96
	0.56	0.56	Hexane. g/100 in2·24 hr.; ASTM E96
	0.64	0.64	Benzene. g/100 in2·24 hr.; ASTM E96
	0.69	0.69	Ethyl Alcohol. g/100 in2·24 hr.; ASTM E96
	0.95	0.95	Acetone. g/100 in2·24 hr.; ASTM E96
Thickness	25.4 microns	1.00 mil
	50.8 microns	2.00 mil
	127 microns	5.00 mil

Mechanical Properties	Metric	English	Comments
Hardness, Shore D	56	56	ASTM D2240
Tensile Strength at Break	20.7 MPa	3000 psi	ASTM D882
Tensile Strength	23.0 MPa	3340 psi	ASTM D1457
Tensile Strength, Yield	12.0 MPa	1740 psi	ASTM D882
Elongation at Break	300 %	300 %	ASTM D882
Modulus of Elasticity	0.483 GPa	70.0 ksi	ASTM D882
Flexural Modulus	0.586 GPa	85.0 ksi	ASTM D790
Flex Crack Resistance	10000	10000	Cycles MIT Folding Endurance; ASTM D2176
Izod Impact, Notched	76.9 J/cm	144 ft-lb/in	Chemours pneumatic impact tester
Coefficient of Friction	0.10 - 0.30	0.10 - 0.30	ASTM D1894

Electrical Properties	Metric	English	Comments
Volume Resistivity	>= 1.00e+18 ohm-cm @Temperature -40.0 - 240 °C	>= 1.00e+18 ohm-cm @Temperature -40.0 - 464 °F	ASTM D257
Surface Resistivity per Square	>= 1.00e+16 ohm @Temperature -40.0 - 240 °C	>= 1.00e+16 ohm @Temperature -40.0 - 464 °F	ASTM D257
Insulation Resistivity	19800 Megaohm/1000 m @Temperature 200 °C	65000 Megaohm/1000 ft @Temperature 392 °F	0.2 MF wound capacitor section, single layer, Teflon™ 50A film.
	76200 Megaohm/1000 m @Temperature 150 °C	250000 Megaohm/1000 ft @Temperature 302 °F	0.2 MF wound capacitor section, single layer, Teflon™ 50A film.
	107000 Megaohm/1000 m @Temperature 100 °C	350000 Megaohm/1000 ft @Temperature 212 °F	0.2 MF wound capacitor section, single layer, Teflon™ 50A film.
Dielectric Constant	1.93 - 2.02 @Frequency 1000 Hz, Temperature -40.0 - 225 °C	1.93 - 2.02 @Frequency 1000 Hz, Temperature -40.0 - 437 °F	ASTM D150
	2.0 @Frequency 100 - 1.00e+6 Hz, Temperature 25.0 °C	2.0 @Frequency 100 - 1.00e+6 Hz, Temperature 77.0 °F	ASTM D150
Dielectric Strength	70.0 kV/mm @Thickness 0.500 mm	1780 kV/in @Thickness 0.0197 in	Short-time, in air; ASTM D149 Method A
	260 kV/mm @Thickness 0.0250 mm	6600 kV/in @Thickness 0.000984 in	Short-time, in air; ASTM D149 Method A
Dissipation Factor	0.00020 @Frequency 1000 Hz, Temperature -40.0 - 225 °C	0.00020 @Frequency 1000 Hz, Temperature -40.0 - 437 °F	ASTM D150
	0.00020 - 0.00070 @Frequency 100 - 1.00e+6 Hz, Temperature 25.0 °C	0.00020 - 0.00070 @Frequency 100 - 1.00e+6 Hz, Temperature 77.0 °F	ASTM D150
	0.00050 @Frequency 1e+6 Hz, Temperature -40.0 - 240 °C	0.00050 @Frequency 1e+6 Hz, Temperature -40.0 - 464 °F	ASTM D150
Arc Resistance	>= 165 sec	>= 165 sec	Samples melted in arc did not track.; ASTM D495

Thermal Properties	Metric	English	Comments
Specific Heat Capacity	1.17 J/g-°C	0.280 BTU/lb-°F
Thermal Conductivity	0.195 W/m-K	1.35 BTU-in/hr-ft²-°F	Cenco-Fitch
Melting Point	260 - 280 °C	500 - 536 °F	DTA; ASTM D3418
Maximum Service Temperature, Air	255 °C	491 °F	Zero Strength Temperature
Deflection Temperature at 0.46 MPa (66 psi)	70.0 °C	158 °F	D648 Tensile Bars
Deflection Temperature at 1.8 MPa (264 psi)	51.0 °C	124 °F	D648 Tensile Bars
Oxygen Index	>= 95 %	>= 95 %	ASTM D2863

Optical Properties	Metric	English	Comments
Refractive Index	1.341 - 1.347	1.341 - 1.347
Transmission, Visible	96 %	96 %	Solar Transmission; ASTM E-424

Descriptive Properties
Bursting Strength (Mullen)	11 psi		ASTM D774
Chemical/Solvent Resistance	Excellent		ASTM D543
Detergent Resistance (hours)	480		On grit blast aluminum
	600		On aluminum
	744
Dimensional Stability	0.72% Expanse		MD. 30 minutes at 150°C
	2.2% shrinkage		TD. 30 minutes at 150°C
Flammability Rating	VTM-O
Heat of Combustion	5.1 MJ/kg		ASTM D240
Salt Spray Resistance Coatings (hours)	744+		ASTM B117. 5% NaCl at 35 °C (95 °F).
Tear Strength-Initial (Graves)	270 g force		ASTM D1004
Tear Strength-Propagating (Elmendorf)	125 g		ASTM D 1922
Weather Resistance (years unaffected)	20		No adverse effects. Continuous exposure in Florida.

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PDU8845 / 268772

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