Fluorinated Ethylene Propylene (FEP) is a melt-processable copolymer of tetrafluoroethylene (PTFE) and hexafluoropropylene (HFP).
A variety of FEP materials with different melt viscosity are available by modifying the percentage of HFP. FEP offers the same excellent combination of properties characteristic of PTFE such as non-aging characteristics, chemical inertness, exceptional dielectric properties, low flammability, heat resistance, toughness and flexibility, low coefficient of friction, non-stick characteristics, and negligible moisture absorption.
However, FEP is softer than PTFE. FEP is highly transparent and has excellent weather resistance, especially to UV. PB21000 materials meet the requirements of ASTM D2116.
PBY Material Codes:
PB21000M - FEP
Temperature range: -436°F to +392°F
PB21000M meets ASTM D2116 Type III requirements.
Property | Test Method | Units | Typical Values |
---|---|---|---|
Color | - | - | Translucent to White |
Specific Gravity | ASTM D792 | - | 2.120 - 2.170 |
Hardness Shore D | ASTM D2240 | - | 59 - 69 |
Tensile Strength, min. | ASTM D2116 | PSI [MPa] | 3,000 [20.7] |
Elongation at Break, min. | ASTM D2116 | % | 275 |
Service Temperature High | - | °F [°C] | 392 [200] |
Service Temperature Low | - | °F [°C] | -436 [-260] |
Second Melt Peak Temp. | ASTM D3418 | °F [°C] | 500 [260] |
Glass Transition Temp. | ASTM D3418 | °F [°C] | 176 [80] |
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