Teflon Technical Data and Information
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Teflon is a registered trademark of the Du Pont Company
for its fluoropolymer resin.
Teflon is available with a number of different fillers or reinforcing
agents to modify the performance in use.
Teflon is a fairly expensive material that is commonly asked for, but in fact it is not commonly used. Most people fall into the trap that they assume all smooth white plastics are Teflon. In fact the most common plastic is High Density Polyethylene (HDPE)
Teflon PTFE resins have a continuous service temperature of 260°C And even higher temperatures can be sustained for short periods of time.
Teflon provides exceptional chemical, electrical, mechanical and thermal properties. It has one of the lowest dielectric constants and dissipation factors of any material. Teflon is unaffected by most chemicals in commercial use.
Teflon is available in, Sheet, Rod, Tube and Film
Common applications include, food processing, electrical parts,
insulators, medical components, seals, bearings and high heat situations.
Typical properties of Teflon
ASTM test |
Property |
Value |
Physical |
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| D792 | Specific gravity | 2.16 |
| D1238 | Melt flow index | 5 |
| D570 | Water absorption, 24 hours, 3.0 mm thick (%) | 0.03 |
| °C | Maximum service temp | +260 |
| °C | Minimum service temp | -40 |
Mechanical |
||
| D638 | Tensile strength at yield N/mm2 | 32 |
| D638 | Elongation at yield(%) | 300 |
| D638 | Tensile strength at break N/mm2 | 46 |
| D638 | Elongation at break(%) | 500 |
| Impact strength mj/mm2 | no break | |
| D256 | Notched impact strength mj/mm2 | 22 |
| Ball indentation hardness N/mm2 | 105 | |
| D790 | Flexural strength N/mm2 | 74 |
| D638 | Modulus of elasticity N/mm2 | 2400 |
Thermal |
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| C177 | Thermal conductivity at 20°C | 0.19 |
| D696 | Coefficient of thermal expansion K-1.10-4 | 1.3 |
Electrical |
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| D257 | Volume resistivity (ohm-cm) | 10.14 |
| D257 | Surface resistancy ohm | 10.13 |
| D150 | Dielectric constant At 1kHz | 6.4 |
| D150 | Dissipation loss factor At 1kHz | 0.17 |
These values are representative of those obtained under standard ASTM conditions and should not be used to design parts which function under different conditions.
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Download Teflon MSDS