PET (polyethylene terephthalate)
PET PET has good electrical and sliding properties, a good dimensional stability, high durability and mechanical strength. It has a minimal water absorption, it is physiologically neutral, self-extinguishing, and resistant to abrasion.
APPLICATION FIELDS: sliding elements, sliding blades, insulating parts, precise gears, pump elements, pulleys, rollers, rubbing blades.
| Properties | Unit | Value |
| General properties | ||
| Density | g/cm3 | 1,39 |
| Moisture absorption, saturation 23°C | % | 0,25 | Water absorption, saturation | % | 0,5 |
| Mechanical properties | ||
| Yield stress | N/mm2 | 85 |
| Elongation at break (yieldpoint) | % | >15 |
| Modulus of longitudinal elasticity, tension | N/mm2 | 3400 | Ball indentation hardness, 30 sec. value H 961/30 | N/mm2 | 170 |
| Notched impact strength | kJ/m2 | >50 |
| Notched impact strength (Charpy) | kJ/m2 | 3,5 |
| Stress in time unit (1% 1000h) | N/mm2 | 26 |
| Electrical properties | ||
| Volume resistivity | Ohm cm | 10Exp17 |
| Dielectric constant | 10E x p6 Hz | 3,2 |
| Dielectric loss factor | 10E x p6 Hz | 0,014 |
| Dielectric strength | kV/mm | 25 |
| Surface resistance | Ohm | 10Exp16 |
| Thermal properties | ||
| Max. temperature for using (short-term) | °C | 160 |
| Max. temperature for using (long-term) | °C | 115 |
| Resistance to heat distortion A (ISO-R 75) | °C | 80 |
| Resistance to heat distortion B (ISO-R 75) | °C | 160 |
| Coefficient of linear expansion between 23 and 100°C | 10ExpE5x1/K | 6 |
| Thermal conductivity at 23°C | W/Km | 0,29 |
| Flammability according to UL standard 94 | HB | |
| Melting point | °C | 255 |