| Technical Properties of TEFLON® |
| MECHANICAL PROPERTIES |
| 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 DuPont or a Licensed Industrial Applicator. |
| 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 |
Elongation |
D1457 D1708 D638 |
% |
300-500 |
325 |
300 |
150-300 |
| Flexural Modulus | D790 | MPa (psi) |
500 | 600 | 600 | 1.200 |
| Folding Endurance | D2176 | (MIT) cycles |
>106 | 5-80 x 103 | 10-500 x 103 | 10-27 x 103 |
| Impact Strength | D256 | J/m (ft·lb/in) |
189 | No break | No break | No break |
| Hardness | D2240 | Shore D pencil |
50-65 HB |
56 HB |
60 HB | 72 HB |
| Abrasion Resistance – Bell Abrasion (1) – Sliding Arm (2) – Tabor Abrasion (3) |
— |
g/µm mg mg |
85 7,9-9,7 12 |
— 11,1-15,2 14,8 |
— — — |
— 1,.4 — |
| Scratch Resistance scratch master –initial (4) –complete (5) |
— |
kg kg |
5,7-7,0 7,3-10,7 |
5,1-11,4 8,5-13,2 |
— — |
— — |
| Coefficient of Friction –static –dynamic |
D1894 | — |
0,12-0,15 0,05-0,10 |
0,12-0,20 0,08-0,3 |
0,2 — |
0,24-0,50 0,3-0,4 |
| Contact Angle (water) | — | degree | 104-111 | 95-105 | 104-111 | 90-100 |
| Notes: 1. Bell Abrasion Tester: grams abrasive/micrometers 2. Sliding Arm Test: 1,000 cycles, 500 gr load, 400 Emery paper, 35.5 sq. cm surface 3. Tabor Abrasion: Cs 17 wheel, 1kg load, 1,000 cycles, weight loss in mg 4. Scratch Master: initial = first sign of substrate 5. Scratch Master: complete = total removal of film |
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| THERMAL PROPERTIES |
Property |
ASTM Standard | Unit | Teflon® PTFE | Teflon® FEP | Teflon® PFA | Teflon® ETFE |
| Melting Point | D3418 | °C | 327 | 260 | 305 | 267 |
| Cure Temperature | — | °C | 380-430 | 360-390 | 380-400 | 300-325 |
| Max. Use Temperature |
— | °C | 270 | 205 | 260 | 150 |
| Intermittent üzemi hőfok |
— | °C | Please contact us! | |||
| Flame Rating** | UL94 | — | VO | VO | VO | VO |
| Limiting Oxygen Index | D2863 | % | >95 | >95 | >95 | 30-36 |
Heat of Combustion |
D240 | MJ/kg (Btu/lb) |
5,1 | 5,1 | 5,3 | 13,7 |
| Thermal Conductivity | — | Btu·in/h·ft2·°F W/m·K |
0,25 | 0,20 | 0,19 | 0,24 |
| ** 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. | ||||||
| CHEMICAL PROPERTIES |
| Property | ASTM Standard | Unit | Teflon® PTFE | Teflon® FEP | Teflon® PFA | Teflon® ETFE |
| Chemical/Solvent Resistance | D543 | — | Excellent | Excellent | Excellent | Excellent |
| Water Absorption, 24 h | D570 | % | <0,01 | <0,01 | <0,03 | <0,03 |
| Salt Spray Resistance (1) – on aluminum – on steel |
B-117 | Hours Hours |
744+ 192 |
744+ — |
1000 — |
1000 — |
| Detergent Resistance (2) -on aluminum -on grit-blasted aluminum -on grit-blasted steel |
— | Hours Hours Hours |
264 624 24 |
744 600 480 |
— — — |
— — — |
| Weather Resistance | Florida Exposure | Years Unaffected | 20 | 20 | 10 | 15 |
| Notes: 1. Salt Spray Resistance: 5% NaCl at 35°C/95°C, hours to failure. 2. Detergent Resistance: hours to failure. |
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| 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 |
| Dielectic Strength** | 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 |
| ** Dielectric Strength: 100 micrometers film | ||||||
| Vapor Transmission Rates of TEFLON®
FEP Film, 25 µm (1 mil) thickness/per ASTM E-96 (modified) Values measured on thicker specimens and converted to 25 µm (1 mil) |
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Vapor |
Temperature, °C | g/100 sq in. or g/625 sq cm (24 Hours) |
| Acetic Acid | 35° | 0,41 |
| Aceton | 35° | 0,95 |
| Acetophenone | 25° | 0,50 |
| Benzene | 35° | 0,64 |
| Carbon Tetrachloride | 35° | 0,31 |
| Etyl Acetate | 35° | 0,76 |
| Hexane | 35° | 0,56 |
| Hydrochloric Acid, 20% | 25° | <0,01 |
| Piperidine | 25° | 0,04 |
| Red Fuming Nitric Acid | 25° | 7,5-1,4 |
| Sodium Hydroxide, 50% | 25° | <0,01 |
| Sulfuric Acid, 98% | 25° | 0,00001 |
| Water | 39,5° | 0,40 |
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 from their use by Buyer in wholer 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.
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 from their use by Buyer in wholer 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.