Properties | Unit | ASTM test | PTFE | PFA | FEP | ETFE | CTFE | PVDF | PVC | PE | PI | PEEK | |
Physical Properties | Specific gravity | - | D792 | 2.14-2.20 | 2.12-2.17 | 2.12-2.17 | 1.7 | 2.1-2.2 | 1.77 | 1.35-1.45 | 0.91-0.93 | 1.41 | 1.3 |
Melting point | °C | - | 327 | 310 | 275 | 270 | 220 | 166 | 75-105 | 130-137 | - | 334 | |
Coefficient of liner thermal expansion | 10-5/ °C | D696 | 9.9 (23~66 °C) | 12 (21~100 °C) | 8.3-10.5 | 9 | 4.5-7 | 8.5 | 7.5 | 16-18 | 5.2 | 4.8 | |
Thermal conductivity | 10-6W/m C C Dk |
C177 | 1.9 | 1.9 | 1.9 | 1.8 | 1.6 | 1.7 | 1-2.3 | 2.6 | - | 1.9 | |
Index of refraction | - | D541 | 1.35 | 1.35 | 1.34 | 1.4 | - | 1.42 | 1.54 | 1.51 | - | - | |
Coefficient of water absorption | % (24h) | D570 | <0.01 | 0.03 | <0.01 | 0.03 | - | 0.05 | 0.07-4 | <0.015 | 0.39 | 0.14 | |
Max. temp. | °C | - | 260 | 260 | 205 | 180 | 180 | 135 | 50-70 | 100 | 260 | 250 | |
Physical Properties | Tensile strength | Mpa | D638 | 13.7-34.3 | 27.5-29.4 | 18.6 | 44.6 | 31-41 | 37-51 | 34-61 | 10-13 | 83 | 97 |
Elongation | % | D638 | 200-400 | 300 | 250-330 | 100-400 | 80-250 | 25-500 | 2-40 | 200-575 | 8 | 80 | |
Compressive strength | Mpa | D695 | 11.8 | - | 15.2 | 49 | 31-51 | 59-68 | 54-89 | - | 122 | 120 | |
Flexural modulus | Mpa | D790 | - | - | - | 38 | 51-64 | 59-75.5 | 68-103 | - | 127 | 138.3 | |
Bending strength | X103Mpa (22.8 °C) |
D790 | 0.55 (5.6) | 0.82 (8.4) | 0.6 | 1.37 | 1.54 | 1.37 | 2-3.5 | 0.25-0.5 | 3 | 3.8 | |
Hardness | Rockwell | D785 | - | - | - | R50 | R75-95 | -- | - | - | 88 | R126 | |
Durometer | D2240 | 50-55 | 64 | 60-65 | 75 | 80 | 80 | 80-90 | 49-75 | - | - | ||
Coefficient of dynamic friction | 0.7Mpa 3m/mis St |
- | 0.10 | 0.2 | 0.3 | 0.4 | 0.39 | 0.39 | 0.22 | 0.14 | - | - | |
Electric Properties | Specific volume resistivity | Ω . cm | D257 | >1018 | >1018 | >1018 | >1016 | 2x1014 | 2x1014 | >1016 | >1015 | 3x1016 | >1016 |
Surface resistivity | Ω | D257 | >1016 | >1016 | >1016 | >1016 | - | - | - | - | - | >1016 | |
Dielectric breakdown voltage | 1.8Th kv/mm | C149 | 19.2 | 20 | 20-24 | 16 | 10.4 | 20-24 | 18-48 | 19 | 20 | 19 | |
Dielectric constant | 60Hz | D150 | <2.1 | <2.1 | 2.1 | 2.6 | 8.4 | 2.5 | 3 | 2.3 | 3.65 | 3.25 | |
Dielectric loss tangent | 60Hz | D150 | <0.0002 | <0.0002 | <0.0002 | 0.0006 | 0.049 | 0.0012 | 0.006 | <0.0005 | 0.0039 | 0.002 | |
Chemical Properties | Effect of sunlight | - | - | ◎ | ◎ | ◎ | ◎ | ◎ | ◎ | △ | △ | ○ | ○ |
Acid resistance | - | D543 | ◎ | ◎ | ◎ | ◎ | ◎ | ◎ | ○ | ○ | △ | △ | |
? | - | C543 | ◎ | ◎ | ◎ | ◎ | ◎ | ○ | ○ | ○ | △ | ○ | |
Solvent resistance | - | - | ◎ | ◎ | ◎ | ◎ | ○ | ○ | △ | △ | ◎ | △ | |
Workability | - | - | ◎ | ◎ | ◎ | ◎ | ◎ | ◎ | ○ | ○ | ○ | ○ |
Physical Properties | Unit | ASTM test | PTFE | PFA | FEP |
Specific gravity | - | D792 | 2.14-2.20 | 2.12-2.17 | 2.12-2.17 |
Melting point | °C | - | 327 | 310 | 275 |
Coefficient of liner thermal expansion | 10-5/ °C | D696 | 9.9 (23~66 °C) | 12 (21~100 °C) | 8.3-10.5 |
Thermal conductivity | 10-6W/m C C Dk |
C177 | 1.9 | 1.9 | 1.9 |
Index of refraction | - | D541 | 1.35 | 1.35 | 1.34 |
Coefficient of water absorption | % (24h) | D570 | <0.01 | 0.03 | <0.01 |
Max. temp. | °C | - | 260 | 260 | 205 |
Mechanical Properties | Unit | ASTM test | PTFE | PFA | FEP |
Tensile strength | Mpa | D638 | 13.7-34.3 | 27.5-29.4 | 18.6 |
Elongation | % | D638 | 200-400 | 300 | 250-330 |
Compressive strength | Mpa | D695 | 11.8 | - | 15.2 |
Flexural modulus | Mpa | D790 | - | - | - |
Bending strength | X103Mpa (22.8 °C) |
D790 | 0.55 (5.6) | 0.82 (8.4) | 0.6 |
Hardness | Rockwell | D785 | - | - | - |
Durometer | D2240 | 50-55 | 64 | 60-65 | |
Coefficient of dynamic friction | 0.7Mpa 3m/mis St |
- | 0.10 | 0.2 | 0.3 |
Electric Properties | Unit | ASTM test | PTFE | PFA | FEP |
Specific volume resistivity | Ω . cm | D257 | >1018 | >1018 | >1018 |
Surface resistivity | Ω | D257 | >1016 | >1016 | >1016 |
Dielectric breakdown voltage | 1.8Th kv/mm | C149 | 19.2 | 20 | 20-24 |
Dielectric constant | 60Hz | D150 | <2.1 | <2.1 | 2.1 |
Dielectric loss tangent | 60Hz | D150 | <0.0002 | <0.0002 | <0.0002 |
Chemical Properties | Unit | ASTM test | PTFE | PFA | FEP |
Effect of sunlight | - | - | ◎ | ◎ | ◎ |
Acid resistance | - | D543 | ◎ | ◎ | ◎ |
? | - | C543 | ◎ | ◎ | ◎ |
Solvent resistance | - | - | ◎ | ◎ | ◎ |
Workability | - | - | ◎ | ◎ | ◎ |
Physical Properties | Unit | ASTM test | ETFE | CTFE | PVDF |
Specific gravity | - | D792 | 1.7 | 2.1-2.2 | 1.77 |
Melting point | °C | - | 270 | 220 | 166 |
Coefficient of liner thermal expansion | 10-5/ °C | D696 | 9 | 4.5-7 | 8.5 |
Thermal conductivity | 10-6W/m C C Dk |
C177 | 1.8 | 1.6 | 1.7 |
Index of refraction | - | D541 | 1.4 | - | 1.42 |
Coefficient of water absorption | % (24h) | D570 | 0.03 | - | 0.05 |
Max. temp. | °C | - | 180 | 180 | 135 |
Mechanical Properties | Unit | ASTM test | PTFE | PFA | FEP |
Tensile strength | Mpa | D638 | 44.6 | 31-41 | 37-51 |
Elongation | % | D638 | 100-400 | 80-250 | 25-500 |
Compressive strength | Mpa | D695 | 49 | 31-51 | 59-68 |
Flexural modulus | Mpa | D790 | 38 | 51-64 | 59-75.5 |
Bending strength | X103Mpa (22.8 °C) |
D790 | 1.37 | 1.54 | 1.37 |
Hardness | Rockwell | D785 | R50 | R75-95 | -- |
Durometer | D2240 | 75 | 80 | 80 | |
Coefficient of dynamic friction | 0.7Mpa 3m/mis St |
- | 0.4 | 0.39 | 0.39 |
Electric Properties | Unit | ASTM test | PTFE | PFA | FEP |
Specific volume resistivity | Ω . cm | D257 | >1016 | 2x1014 | 2x1014 |
Surface resistivity | Ω | D257 | >1016 | - | - |
Dielectric breakdown voltage | 1.8Th kv/mm | C149 | 16 | 10.4 | 20-24 |
Dielectric constant | 60Hz | D150 | 2.6 | 8.4 | 2.5 |
Dielectric loss tangent | 60Hz | D150 | 0.0006 | 0.049 | 0.0012 |
Chemical Properties | Unit | ASTM test | PTFE | PFA | FEP |
Effect of sunlight | - | - | ◎ | ◎ | ◎ |
Acid resistance | - | D543 | ◎ | ◎ | ◎ |
? | - | C543 | ◎ | ◎ | ○ |
Solvent resistance | - | - | ◎ | ○ | ○ |
Workability | - | - | ◎ | ◎ | ◎ |
Physical Properties | Unit | ASTM test | PVC | PE | PI | PEEK |
Specific gravity | - | D792 | 1.35-1.45 | 0.91-0.93 | 1.41 | 1.3 |
Melting point | °C | - | 75-105 | 130-137 | - | 334 |
Coefficient of liner thermal expansion | 10-5/ °C | D696 | 7.5 | 16-18 | 5.2 | 4.8 |
Thermal conductivity | 10-6W/m C C Dk |
C177 | 1-2.3 | 2.6 | - | 1.9 |
Index of refraction | - | D541 | 1.54 | 1.51 | - | - |
Coefficient of water absorption | % (24h) | D570 | 0.07-4 | <0.015 | 0.39 | 0.14 |
Max. temp. | °C | - | 50-70 | 100 | 260 | 250 |
Mechanical Properties | Unit | ASTM test | PTFE | PFA | FEP | |
Tensile strength | Mpa | D638 | 34-61 | 10-13 | 83 | 97 |
Elongation | % | D638 | 2-40 | 200-575 | 8 | 80 |
Compressive strength | Mpa | D695 | 54-89 | - | 122 | 120 |
Flexural modulus | Mpa | D790 | 68-103 | - | 127 | 138.3 |
Bending strength | X103Mpa (22.8 °C) |
D790 | 2-3.5 | 0.25-0.5 | 3 | 3.8 |
Hardness | Rockwell | D785 | - | - | 88 | R126 |
Durometer | D2240 | 80-90 | 49-75 | - | - | |
Coefficient of dynamic friction | 0.7Mpa 3m/mis St |
- | 0.22 | 0.14 | - | - |
Electric Properties | Unit | ASTM test | PTFE | PFA | FEP | |
Specific volume resistivity | Ω . cm | D257 | >1016 | >1015 | 3x1016 | >1016 |
Surface resistivity | Ω | D257 | - | - | - | >1016 |
Dielectric breakdown voltage | 1.8Th kv/mm | C149 | 18-48 | 19 | 20 | 19 |
Dielectric constant | 60Hz | D150 | 3 | 2.3 | 3.65 | 3.25 |
Dielectric loss tangent | 60Hz | D150 | 0.006 | <0.0005 | 0.0039 | 0.002 |
Chemical Properties | Unit | ASTM test | PTFE | PFA | FEP | |
Effect of sunlight | - | - | △ | △ | ○ | ○ |
Acid resistance | - | D543 | ○ | ○ | △ | △ |
? | - | C543 | ○ | ○ | △ | ○ |
Solvent resistance | - | - | △ | △ | ◎ | △ |
Workability | - | - | ○ | ○ | ○ | ○ |
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