Teflon® FEP 9302

About
For inventory control purposes product name may be followed by an X. Products labeled FEP 9302 and FEP 9302 X are equivalent and all information in this document is applicable to both. Typical Application Tubes, piping, linings, bellows, valves and other components for the chemical industry. Jackets for Wire and Cable applications demanding a high degree of stress crack resistance. DuPont Teflon ® FEP 9302 is a melt-processible copolymer of tetrafluoroethylene and hexafluoropropylene without additives that meets the requirements of ASTM D 2116 type IV. It offers the excellent combination of properties characteristic of Teflon ® fluoropolymer resins: non-ageing characteristics, chemical inertness, exceptional dielectric properties, low flammability, heat resistance, toughness and flexibility, low coefficient of friction, non-stick characteristics, negligible moisture absorption and excellent weather resistance. Teflon ® FEP 9302 is used in the chemical industry for applications such as chemical linings, bellows, valve components, pipes and tubing. In demanding Wire and Cable applications, requiring a very high degree of stress crack resistance, it can be used as a material for jacketing. Thanks to its combination of viscosity and stress crack resistance, it can be processed at faster rates and higher extrusion line speeds than many FEP grades with comparable stress crack resistance performance. Stress crack resistance is an important element in establishing end-use performance. Experience shows that the MIT folding endurance or flex life test, performed on a thin film of resin, has established a good correlation with extensive cable testing. The higher the MIT flex life, the higher the stress-crack resistance of the resin. MIT test results should be viewed as a guide to comparative performance of the various grades of resin. We recommend that for applications involving repeated thermal and flex cycling, specific tests on the final cable always should be undertaken. See also DuPont’s bulletin “Grade selector for Wire and Cable applications.”&&

Product Description
SupplierChemours
GenericFEP
Material StatusCommercial: Active
FeaturesWeather resistance is good,Good flexibility,Good Electrical Properties,Low coefficient of friction,Quick molding cycle,Food contact compliance,High Heat Resistance,Copolymer,Solvent resistance,Low moisture absorption,V-0
AvailabilitysNorth America,Latin America,Asia Pacific,Europe
Process MethodsExtrusion

Technical Data
PHYSICALNominal valueUnitTest method
Density 
2.13g/cm³ASTM D792
2.13g/cm³ISO 1183
Melt Flow Rate
372℃,5.0kg3.0g/10minISO 12086
372℃,5.0kg3.0g/10minASTM D2116
Water absorption rate
24hr< 0.010%ASTM D570

MECHANICALNominal valueUnitTest method
Shore hardness
Shaw’s D56 ASTM D2240
Shaw’s D56 ISO 868
tensile strength
Yield, 23 ℃30.0MPaASTM D638
Yield, 23 ℃30.0MPaISO 12086
Tensile strain
Fracture, 23 ℃330%ISO 12086
Fracture, 23 ℃330%ASTM D638

IMPACTNominal valueUnitTest method
Impact strength of cantilever beam notch
23℃No Break ISO 180
23℃No Break ASTM D256

THERMALNominal valueUnitTest method
Continuous use temperature205
Melting temperature260

Electrical performanceNominal valueUnitTest method
Dielectric strength
0.25 mm> 100kV/mmASTM D149
0.25 mm> 100kV/mmIEC 60243-1
Dielectric constant ASTM D150
1 kHz2.03 ASTM D150
1.00 GHz2.03 ASTM D150
Relative permittivity IEC 60250
1 kHz2.03 IEC 60250
1.00 GHz2.03 IEC 60250
Dissipation factor ASTM D150
1 kHz5.0E-5 ASTM D150
1 GHz7.0E-4 ASTM D150
Dissipation factor IEC 60250
1 kHz5.0E-5 IEC 60250
1 GHz7.0E-4 IEC 60250

FLAME CHARACTERISTICSNominal valueUnitTest method
Flame retardant levelV-0 UL 94
Extreme oxygen index> 95%ASTM D2863
Extreme oxygen index> 95%ISO 4589-2

Supplementary informationNominal valueUnitTest method
Critical Shear Rate(372℃)12.0sec^-1Internal Method
Guide DDR Range 
for cable extrusion3.00 to 8.00 
for jacket extrusion20.0 to 60.0 
MIT flexural strength (film, 200.0 µ m)1.0E+5CyclesASTM D2176

Notes
1. Typical properties: these are not to be construed as specifications.
2. The continuous service temperature is based on accelerated heat-aging tests, and represents the temperature at which tensile strength and ultimate elongation retains 50% of the original values, after 20 000 h thermal aging When considering the use of Teflon ® FEP at elevated temperatures especially in combination with mechanical, electrical or chemical exposure, preliminary testing should be done to verify suitability.
3. ASTM D4591 / D3418
4. Method A (Short-Time)
5. – These results are based on laboratory tests, under controlled conditions, and do not reflect performance under actual fire conditions. – Current rating is a typical theoretical value
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