Material Specification Comparison
Fluorostore sells products based on PTFE (poly-tetra-fluoro-ethylene), FEP (fluorinated-ethylene-propylene), PFA (per-fluoro-alkoxy), ETFE (ethylene-tetra-fluoro-ethylene), ECTFE (ethylene-chloro-tri-fluoro-ethylene), PCTFE (poly-chloro-tri-fluoro-ethylene), and PVDF (poly-vinylidene-fluoride) fluoropolymers. The chart below shows a technical comparison amongst these materials
| Property | Method No. | Units | PTFE | FEP | PFA | ETFE | ECTFE | PCTFE | PVDF |
|---|---|---|---|---|---|---|---|---|---|
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Tubing Overview
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All Material Properties
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PTFE Properties
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FEP Properties
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PFA Properties
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ETFE Properties
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PCTFE Properties
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PVDF Properties
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| Specific Gravity | D792 | - | 2.17 | 2.15 | 2.15 | 1.74 | 1.7 | 1.7 | 1.78 |
| Melting Point | D2236 | deg F | 621 | 518 | 581 | 527 | 464 | 410 | 352 |
| Melting Point | D2236 | deg C | 327 | 270 | 305 | 275 | 240 | 210 | 177 |
| Tensile Strength | D638/D1708/D1457 | psi | 2500 | 3400 | 4,000 | 6,960 | 6,960 | 6,060 | 7,830 |
| Tensile Strength | D638/D1708/D1457 | MPa | 17 | 23 | 27 | 48 | 48 | 41.78 | 54 |
| Yield Strength | D638 | psi | 1,450 | 1,740 | 2,250 | 3,480 | 4,500 | 5,800 | 6,670 |
| Elongation | - | % | 200-500 | 250-350 | 300 | 200-500 | 200-300 | 80-250 | 20-150 |
| Tensile Modulus | D638 | ksi | 87 | 72.5 | 101.5 | 217.5 | 240 | 218 | 348 |
| Flex Modulus | D790 | psi x 1000 | 98 | 101.5 | 95 | 203 | 261 | - | 333.5 |
| Flex Modulus | D790 | MPa | 675 | 700 | 655 | 1400 | 1800 | - | 2300 |
| Izod Impact | D256 | ft-lbs/in | 3.2 | No Break | No Break | No Break | - | - | 2-4 |
| Izod Impact | D256 | J/m | 173 | No Break | No Break | No Break | - | - | 2-4 |
| Hardness | D2240 | Shore D | 60 | 57 | 62 | 75 | 75 | 90 | 79 |
| HDT, @ 66 psi | D648 | deg F | 250 | 158 | 164 | 219 | 240 | 248 | 300 |
| HDT, @ 264 psi | D648 | deg F | 122 | 129 | 118 | 160 | 169 | - | 239 |
| Max. Cont Use Temp | - | deg F | 500 | 400 | 500 | 300 | - | - | - |
| Max. Cont Use Temp | - | deg C | 260 | 204 | 260 | 149 | - | - | - |
| Flame Rating | UL 94 | - | VO | VO | VO | VO | - | - | - |
| Limiting Oxygen Index | D2863 | % | >95 | >95 | >95 | 30-36 | - | - | - |
| Thermal Cond. | - | Btu·in/h·ft2·°F | 1.7 | 1.4 | -1.3 | 1.65 | - | - | - |
| Thermal Cond. | - | W/m·K | 0.25 | 0.20 | 0.19 | 0.24 | - | - | - |
| Dielectric Constant | D150 | 1 MHZ | 2.1 | 2.1 | 2.1 | 2.6 | - | - | - |
| Dielectric Strength | D149 | Volts/µm | 18 | 53 | 80 | 79 | - | - | - |
| Resistivity - Volume | D257 | ohm-cm | >1018 | >1018 | >1018 | >1017 | - | - | - |