Table 1 |
Table 2 |
|
PTFE FEP PFA ETFE ECTFE |
PVDF |
| (If you would like to view the properties of a particular resin click on the hyperlink in the chart below) |
Table 1
Property Comparison of Fluoroplastic/Fluoropolymer Resins |
| Properties |
ASTM or Unit |
PTFE |
FEP |
PFA |
ETFE |
ECTFE |
| MECHANICAL PROPERTIES |
| Specific Gravity | D792 |
2.13-2.20 | 2.12-2.17 |
2.12-2.17 | 1.70-1.76 |
1.68 | | Elongation % |
D638 | 200-450 |
250-330 | 280-400 |
420-460 | 200-300 |
| Tensile Strength (psi) | D638 |
2000-4500 | 2800-5000 |
4000-4500 | 6100-6800 |
6600-7800 | | Flexural Strength (psi) |
D790 | no break |
no break | no break |
5500 | 7000 |
| Compressive Strength (psi) | D695 |
3500 | 2200 |
| 2500 |
1276-1711 | Tensile Elastic Modulus
(Young's Modulus) (psi) |
D638 | 57,000 |
50,000 | 72,500-87,000 |
85000-
95000 | 240,000 |
| Flexural Modulus (psi) | D790 |
71,000-
85,000 | 78,000-
92,000 |
94,000-
99,000 | 128,000-
171,000 |
240,000 | Flexural Modulus
103MPa (103kgf/cm2) |
D790 | 0.5-0.6
(5.0-6.0) |
0.5-0.6
(5.5-6.5) | 0.6-0.7
(6.6-7.0) | 0.9-1.4
(9.0-14.0) |
1.4-1.8
(14-18) | Flex Life
(MIT cycles) |
D2176 | >1,000,000 |
5,000-
80,000 | 10,000-
500,000 |
10,000-
27,000 | na |
| Hardness Durometer Shore D | D636 |
50-65 | 55 | 55-60 |
75 | 75-90 | | Coefficient of Friction |
(on steel) | 0.02 | 0.05 |
0.2 | 0.06 | 0.19 |
Abrasion Resistance
1000 revs. | Taber |
12 | 14-20 | 9-17 |
na | 0.005 | Impact Strength IZOD
73°F/23°C notched ft/lbs/in |
D256 | 3 | no break |
no break | no break | no break |
| THERMAL PROPERTIES | | Melting Point |
°C
(°F) | 327
(621) |
260
(500) | 305
582) |
267
(512) | 240
(464) |
Upper Service
Temperature(20000h) | °C
(°F) |
260
(500) | 204
(400) |
260
(500) | 176
(348) |
150-170
(300-340) | | Flammability |
UL 94 | V-0 | V-0 |
V-0 | V-0 | V-0 |
Thermal Conductivity
BTU/hr/sq ft/deg F in | |
1.7 | 1.4 | 1.3 |
1.65 | 1.6 | Thermal Conductivity
Cal-cm/s-cm2,
ºC | | 6 x 10-4 |
6 x 10-4 | 6 x 10-6 | 5.7 x 10-4 |
4.7-5.3 x 10-4 | Linear Coefficient of
Thermal Expansion | D696
10-5 ºC |
>11.6 | 8.3-10.5 | 13 |
13 | na | | Heat of Fusion |
BTU/LB | 29-37 | 11 |
13 | 20 |
na |
| Heat of Combustion | BTU/LB |
2200 | 2200 |
2300 | 8100 |
na | | Low Temperature Embrittlement |
°C
(°F) | -268
-450 |
-268
-450 | -268
-450 |
-100
-148 | -76
-105 |
| ELECTRICAL PROPERTIES |
| Dielectric Constant |
D150/103Hz |
2.1 |
2.1 |
2.1 |
2.6 |
2.5 |
| D150/106Hz |
2.1 |
2.1 |
2.1 |
2.6 |
2.59 |
| Dielectric Strength |
D149/125 MIL |
500 |
500 |
500 |
na |
na |
| D149/10 MIL | >1400 |
>1400 | >1400 | 1600 |
na | | Volume Resistivity |
D257/ohm-cm | >1018 |
>1018 | >1018 |
>1016 | >1016 |
| Surface Resistivity |
D257/ohm-cm |
>1017 |
>1017 |
>1017 |
>1015 |
>1014-1015 |
| GENERAL PROPERTIES |
| Chemical/Solvent Resistance |
D543 |
Excellent |
Excellent |
Excellent |
Excellent |
Excellent |
| Water Absorption 24h,% |
D570 |
<0.01 |
<0.01 |
<0.03 |
<0.03 |
< 0.1 |
| Deformation Under Load |
*D621 100 ºC |
5.0 |
5.0 |
2.4 |
5.4 |
2.6 |
| Deformation Under Load |
**D621 25 ºC |
7.0 |
3.0 |
2.7 |
2.3 |
0.2 |
| Refractive Index |
|
1.35 |
1.338 |
1.34 |
1.40 |
1.447 |
Arc Resistivity, %
sec |
|
>300 |
>300 |
>300 |
75 |
na |
| D495 |
>200 |
>300 |
>300 |
122 |
135 |
| Limiting Oxygen Index, % |
D2863 |
>95 |
>95 |
>95 |
31 |
60 |
| Properties |
ASTM or Unit |
PTFE |
FEP |
PFA |
ETFE |
ECTFE |
*6.8MPa (986psi), 24h
**13.7MPa(1987psi), 24h |
Table 2
Property Comparison of Fluoroplastic/Fluoropolymer Resins |
| Properties |
ASTM or Unit |
PVDF |
|
| MECHANICAL PROPERTIES |
| Specific Gravity |
D792 |
1.76-1.78 |
|
| Elongation % |
D638 |
300-450 |
| Tensile Strength (psi) |
D638 |
4500-6200 |
| Flexural Strength (psi) |
|
8600-9500 |
| Compressive Strength |
D695 |
11,600 |
Tensile Elastic Modulus
(Young's Modulus) (psi) |
D638 |
160,000 |
Flexural Modulus
103MPa (103kgf/cm2) |
D790 |
90,00-
168,000 |
Flex Life
(MIT cycles) |
D2176 |
na |
| Hardness Durometer Shore D |
D636 |
75-85 |
| Coefficient of Friction (on steel) |
D1984 |
0.4 |
Abrasion Resistance
1000 revs. |
Taber |
5-15 |
Impact Strength IZOD
73°F/23°C notched ft/lbs/in |
D256 |
4 |
| THERMAL PROPERTIES |
| Melting Point |
°C
(°F) |
171
(340) |
|
Upper Service
Temperature(20000h) |
°C
(°F) |
130
(265) |
| Flammability |
UL 94 |
V-0 |
Thermal Conductivity
BTU/hr/sq ft/deg F in |
C177 |
1.3 |
Linear Coefficient of
Thermal Expansion |
D696
10-5 oC |
4.2 |
| Heat of Fusion |
BTU/LB
cal/g |
na
4390 |
| Heat of Combustion |
BTU/LB |
na |
| Low Temperature Embrittlement |
°C
(°F) |
-62
(-80) |
| ELECTRICAL PROPERTIES |
| Dielectric Constant |
D150/103Hz |
7.72 |
|
| D150/106Hz |
6.43 |
| Dielectric Strength |
D149/125 MIL |
1700 |
| D149/10 MIL |
>1080 |
| Volume Resistivity |
D257/ohm-cm |
2 x 1014 |
| Surface Resistivity |
D257/ohm-cm |
5 x 1014 |
| GENERAL PROPERTIES |
| Chemical/Solvent Resistance |
|
Very Good |
|
| Water Absorption 24h, % |
D570 |
<0.04 |
| Refractive Index |
|
1.42 |
| Arc Resistivity, %, sec |
D495 |
50-60 |
| Limiting Oxygen Index, % |
D2863 |
43 |
| Properties |
ASTM or Unit |
PVDF |
|
|
