Teflon™ Properties
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Teflon™ is a registered trademark of Chemours.
Mechanical Properties
| Property | ASTM Standard | Unit | Teflon™ PTFE | Teflon™ FEP | Teflon™ PFA | Teflon™ ETFE |
| Specific Gravity | D792 | – | 2.15 | 2.15 | 2.15 | 1.76 |
| Tensile Strength | D1457, D1708, D638 | MPa | 21-35 | 23 | 25 | 40-47 |
| psi | 3,000-5,000 | 3,400 | 3,600 | 5,800-6,700 | ||
| Elongation | D1457, D1708, D638 | % | 300-500 | 325 | 300 | 150-300 |
| Flexural Modulus | D790 | MPa | 500 | 600 | 600 | 1,200 |
| psi | 72,000 | 85,000 | 85,000 | 170,000 | ||
| Folding Endurance | D2176 | (MIT) | >106 | 5-80 x 103 | 10-500 x 103 | 10-27 x 103 |
| cycles | ||||||
| Impact Strength | D256 | J/m | 189 | No break | No break | No break |
| ft.lb/in | 3.5 | |||||
| Hardness | D2240 | Shore D | 50-65 | 56 | 60 | 72 |
| pencil | HB | HB | ||||
| Abrasion Resistance | ||||||
| • Bell Abrasion (1) | – | g/µm | 85 | – | – | – |
| • Sliding Arm (2) | – | mg | 7.9-9.7 | 11.1-15.2 | – | 13.4 |
| • Tabor Abrasion (3) | – | mg | 12 | 14.8 | – | – |
| Scratch Resistance | – | – | – | – | – | – |
| scratch master | – | – | – | – | – | – |
| • initial (4) | – | kg | 5.7-7.0 | 5.1-11.4 | – | – |
| • complete (5) | – | kg | 7.3-10.7 | 8.5-13.2 | – | – |
| Coefficient of Friction | D1894 | – | – | – | – | – |
| • static | – | – | 0.12-0.15 | 0.12-0.20 | 0.2 | 0.24-0.50 |
| • dynamic | – | – | 0.05-0.10 | 0.08-0.3 | – | 0.3-0.4 |
| Contact Angle | – | – | – | – | – | – |
| • water | – | degree | 104° -111° | 95°-105° | 104°-111° | 90°-100° |
Thermal Properties
| Property | ASTM Standard | Unit | Teflon™ PTFE | Teflon™ FEP | Teflon™ PFA | Teflon™ ETFE |
| Melting Point | D3418 | °C | 327 | 260 | 305 | 267 |
| °F | 621 | 500 | 582 | 512 | ||
| Cure Temperature | °C | 380-430 | 360-390 | 380-400 | 300-325 | |
| °F | 715-805 | 680-735 | 715-750 | 575-615 | ||
| Max. Use Temperature | ||||||
| • Continuous | – | °C | 290 | 205 | 260 | 150 |
| °F | 550 | 400 | 500 | 300 | ||
| • Intermittent | – | °C | 315 | 230 | 290 | 200 |
| °F | 600 | 450 | 550 | 390 | ||
| Flame Rating** | UL94 | V0 | V0 | V0 | V0 | |
| Limiting Oxygen Index | D2863 | % | >95 | >95 | >95 | 30-36 |
| Heat of Combustion | D240 | MJ/kg | 5.1 | 5.1 | 5.3 | 13.7 |
| Btu/lb | 2,200 | 2,200 | 2,300 | 5,900 | ||
| Thermal Conductivity | – | Btu.in/h.ft2.°F | 1.7 | 1.4 | 1.3 | 1.65 |
| W/m-k | 0.25 | 0.20 | 0.19 | 0.24 | ||
Chemical Properties
| Property | ASTM Standard | Unit | Teflon™ PTFE | Teflon™ FEP | Teflon™ PFA | Teflon™ ETFE |
| Property Chemical/Solvent Resistance |
D543 | Excellent | Excellent | Excellent | Excellent | |
| Water Absorption, 24 h | D570 | % | <0.01 | <0.01 | <0.03 | <0.03 |
| Salt Spray Resistance (6) | B-117 | |||||
| • on aluminum | Hours | 744+ | 744+ | 1000 | 1000 | |
| • on steel | Hours | 192 | ||||
| Detergent Resistance (7) | ||||||
| • on aluminum | Hours | 264 | 744 | |||
| • on grit-blasted aluminum | Hours | 624 | 600 | |||
| • on grit-blasted steel | Hours | 24 | 480 | |||
| Weather Resistance | Florida Exposure | Years Unaffected | 20 | 20 | 10 | 15 |
Electrical Properties
| Property | ASTM Standard | Unit | Teflon™ PTFE | Teflon™ FEP | Teflon™ PFA | Teflon™ ETFE |
| Dielectric Constant | D150 | 1 MHz | 2.1 | 2.1 | 2.1 | 2.6 |
| Dielectric Strength (8) | D149 | V/µm | 18 | 53 | 80 | 79 |
| Dissipation Factor | D150 | 1 MHz | <0.0001 | 0.0006 | 0.0001 | 0.007 |
| Arc Resistance | D495 | sec | >300 | >300 | >180 | 122 |
| Volume Resistivity | D257 | ohm.cm | >1018 | >1018 | >1018 | >1017 |
| Surface Resistivity | D257 | ohm/sq | >1018 | >1016 | >1017 | >1015 |
- Bell Abrasion Tester: grams abrasive/micrometers
- Sliding Arm Test: 1,000 cycles, 500 gr load, 400 Emery paper, 35.5 sq. cm surface
- Tabor Abrasion: Cs 17 wheel, 1 kg load, 1,000 cycles, weight loss in mg
- Scratch Master: initial = first sign of substrate
- Scratch Master: complete = total removal of film
- Salt Spray Resistance: 5% NaCl @ 35°C/95°F, hours to failure
- Detergent Resistance: hours to failure
- Dielectric Strength: 100 micrometers film
The values shown in this table represent average experiences from numerous testing sources and are not intended to be specifications. These values will vary depending upon the individual compositions of the primers and topcoats and the systems used. For further information on the properties of these coating systems, and examples of how they have led to the development of new products, increased production rates, and resultant cost savings, you should consult Chemours or a Licensed Industrial Applicator.
All technical advice, application suggestions, recommendations, and services are rendered by the Seller gratis. They are based on technical data which the Seller believes to be reliable and are intended for use by persons having skill and know-how, at their own discretion and risk. Seller assumes no responsibility for results obtained or damages incurred for their use by Buyer in whole or in part. Such technical advice, application suggestions, recommendations or services are not to be taken as a license to operate under, or intended to suggest infringement of, any existing patent.
** Statements regarding behavior in a flame situation are not intended to reflect hazards presented by this or any other material when under actual fire conditions.
Teflon™ is a registered trademark of Chemours.
* This data reproduced from published Chemours literature H-75151