Materials Overview

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
*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
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