FEP-FG General Purpose
FEP Type FG, general purpose film, is manufactured from fluorinated ethylene propylene resin. This film grade provides a low dielectric constant and excellent dissipation over a wide range of temperatures and frequencies for low signal distortion and attenuation in flexible printed circuit and flat cable applications. The high surface and volume resistivity minimizes current leakage and provides excellent insulation in wire and cable applications. FEP also provides the chemical and thermal resistance to withstand aggressive environments, making it an excellent candidate for diaphragms, gaskets, protective linings, sample bags, and containers. Fabricated shapes and contours can be produced via heat sealing and thermoforming. The outstanding weatherability and optical properties of FEP film provide excellent performance in environmental growth chambers and solar thermal collectors. The film meets or exceeds the requirements of ASTM D-3368 (Specification for FEP-Fluorocarbon Resin Sheet and Film) for type I material.
| Features | Benefits |
|---|---|
| Very low surface energy | Outstanding anti-stick release properties |
| Functional temperature range from -254°C (-425°F) to 205°C (400°F) | Suitable for Cryogenic and High temperature applications |
| Super dielectric properties | Excellent electrical insulation properties |
| Chemically inert | Exceptional chemical resistance in aggressive environments |
| UV Stable | Long term performance in outdoor applications |
| Available with pigment | For easy identification |
| Available with C-Treatment | Provides cementable surface on one or both sides of the film |
CHEMFILM® FEP-FG Fluoropolymer Film Typical Physical Properties*
| Typical Properties | Test Method | Value | Units |
|---|---|---|---|
| General | |||
| Specific Gravity | ASTM D-792 | 2.12-2.17 | |
| Yield (1 mil) | 18(90) | m2/kg (ft2/lb) | |
| Water Absorption, 24 hr. | <0.01 | % | |
| Mechanical | |||
| Tensile Strength @ Break (RT) | ASTM D-882 | 24(3500) | MPa (psi) |
| Elongation @ Break (RT) | ASTM D-882 | 300 | % |
| Tensile Modulus (RT) | ASTM D-882 | 480(70000) | MPa (psi) |
| Initial Tear Strength, 1mil | ASTM D-1004 | 2.2-2.7(0.5-0.6) | N(lbf) |
| Initial Tear Strength, 2mil | ASTM D-1004 | 4.9-5.3(1.1-1.2) | N(lbf) |
| Propagation Tear Strength, 1 mil | ASTM D-1004 | 1.4-1.5(.32-.33) | N(lbf) |
| Propagation Tear Strength, 2 mil | ASTM D-1922 | 2.4-2.7 (0.55-0.60) | N(lbf) |
| Fold Endurance (M.I.T) | ASTM D-2176 | 10000 | cycles |
| Electrical | |||
| Dielectric Strength, 1 mil | ASTM D-149 | 240(6000) | kV/mm (V/mil) |
| Dielectric Constant, 1 kHz | ASTM D-150 | 2.1 | |
| Dissipation Factor, 1 kHz | ASTM D-150 | 0.0003 | |
| Thermal | |||
| Melt Point | ASTM D-3418 | 252-282(485-540) | C (F) |
| Continuous Service Temperature | 205 (400) | C (F) | |
| Specific Heat | 1172(.28) | J/(kg· oK) (BTU/(lb·oF)) | |
| Coefficient of Thermal Conductivity | ASTM D-2863 | 0.195(1.35) | W/(m· oK) BTU·in/(hr·ft2·oF) |
| Coefficient of Linear Thermal Expansion | ASTM D-696 | 9.9x10-5(5.5x10-5) | Mm/(mm·°C) (in/(in·°F)) |
| Flammability | UL-94 | V-0 | |
| Limiting Oxygen Index | ASTM D-2863 | 95 | % |
| Optical | |||
| Refractive Index | ASTM D-542 | 1.341-1.347 | |
| Solar Transmission | ASTM E-424 | 96 | % |
*Represent typical performance properties and should not be used for specification purposes. Contact your Saint-Gobain Performance Plastics representative for more information.
