FEP
FEP (fluorinated ethylene propylene)
Properties
- Can be injection-molded and extruded by conventional methods into rods, tubes and special profiles
- Soft material with low tensile strength and low wear resistance
- Heat resistant
- Chemically inert and insoluble
- Excellent electrical properties
- Moisture– and radiation-resistant
- Transparent
Common uses
- Electronic items such as wire covering and spaghetti tubing linings for pipes in the chemical industry and aircraft wiring
- Glazing for solar energy collectors
- Chemical fluid handling
- Medical tubing
- Rings
- Seals and gaskets
- Microwave insulation
FEP
Material Specifications
| ASTM or UL test | Property | Value |
Physical |
||
| D792 | Density (lb/in3)/(g/cm3) | 0.078 (2.15) |
| D570 | Water absorption, 24 hrs (%) | <0.01 |
Mechanical |
||
| D638 | Tensile strength (psi) | 3,400 |
| D638 | Tensile modulus (psi) | - |
| D638 | Tensile elongation at break (%) | 325 |
| D790 | Flexural strength (psi) | No break |
| D790 | Flexural modulus (psi) | 85,000 |
| D2176 | Folding endurance (cycles) | 5–80 x 103 |
| D785 | Hardness, Shore D | D56 |
| D256 | Izod notched impact (ft-lb/in) | No break |
Thermal |
||
| D696 | Coefficient of linear thermal expansion (x 10–5 in/in/F°/C°) | 8.3–10.5 |
| D648 | Heat deflection temp (F°/C°) at 264 psi | - |
| D3418 | Melting temp (F°/C°) | 500/260 |
| - | Max operating temp (F°/C°) | 400/204 |
| C177 | Thermal conductivity (BTU-in/ft2–h– F°) |
1.4 6 x 104 |
| UL94 | Flammability rating | V-O |
Electrical |
||
| D149 | Dielectric strength (V/mil) short time, ⅛” thick |
1,800 |
| D150 | Dielectric constant at 1 MHz | 2.1 |
| D150 | Dissipation factor at 1 MHz | 0.0007 |
| D495 | Arc resistance (sec) | <300 |
| D257 | Volume resistivity (ohm/cm) at 50% RH | 1018 |
These are typical values for reference and comparison only. They should not be used as a basis for design specifications or quality control. Contact us for the manufacturers’ complete material property datasheets. All values were taken at 73°F (23°C) unless otherwise noted.
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