All Material Comparison
Typical Properties of Fluoropolymers
Property | Method No. | Units | PTFE | FEP | PFA | ETFE | ECTFE | PCTFE | PVDF |
Specific Gravity | D792 | - | 2.17 | 2.15 | 2.15 | 1.74 | 1.7 | 1.7 | 1.78 |
Melting Point | D2236 | deg F deg C |
621 327 |
518 270 |
581 305 |
527 275 |
464 240 |
410 210 |
352 177 |
Tensile Strength | D638 D1708 D1457 |
psi MPa |
2500 17 |
3400 23 |
4,000 27 |
6,960 48 |
6,960 48 |
6,060 41.78 |
7,830 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 MPa |
98 675 |
101.5 700 |
95 655 |
203 1400 |
261 1800 |
- | 333.5 2300 |
Izod Impact | D256 | ft-lbs/in J/m |
3.2 173 |
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 deg C |
500 260 |
400 204 |
500 260 |
300 149 |
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*Flame Rating | UL 94 | VO | VO | VO | VO | ||||
Limiting Oxygen Index | D2863 | % | >95 | >95 | >95 | 30-36 | |||
Thermal Conductivity | Btu·in/h·ft2·°F W/m·K |
1.7 0.25 |
1.4 0.20 |
1.3 0.19 |
1.65 0.24 |
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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 |