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
Material Specification Comparison |
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| 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 |
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Limiting Oxygen Index |
D2863 |
% |
>95 |
>95 |
>95 |
30-36 |
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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 |
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Dielectric Strength |
D149 |
Volts/µm |
18 |
53 |
80 |
79 |
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Resistivity - Volume |
D257 |
ohm-cm |
>1018 |
>1018 |
>1018 |
>1017 |
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