TECAPET®PET is an unreinforced, semicrystalline thermoplastic polyester derived from polyethylene terephthalate. Its excellent wear resistance, low coefficient of friction, high flexural modulus, and superior dimensional stability make it a versatile material for designing mechanical and electro-mechanical parts. Because TECAPET®PET has no centerline porosity, the possibility of fluid absorption and leakage is virtually eliminated.
- Excellent wear resistance
- Low coefficient of friction
- Very good chemical resistance
- No centerline porosity eliminates the possibility of fluid absorption and leakage
- Good electrical insulator
- High mechanical strength
- Excellent hardness and stiffness
- Good weather resistance
- Low water absorption
- Good resistance to high-energy radiation
TECAPET™PET superior wear resistance and lack of centerline porosity give it an advantage over other materials for applications involving solvents, chemicals, and food products. TECAPET™PET is also used in water purification systems, printing equipment, textile components, food-handling equipment, and valves.
| Properties | Condition | Value | Test Method | Comment | ||
|---|---|---|---|---|---|---|
| Mechanical | Modulus of elasticity (tensile test) | 470,000 | psi | ASTM D 638 | ||
| Tensile strength at yield | @ 73°F | 13000 | psi | ASTM D 638 | ||
| Elongation at break | @ 73°F | 20 | % | ASTM D 638 | ||
| Flexural strength | @ 73°F | 19000 | psi | ASTM D 790 | ||
| Modulus of elasticity (flexural test) | @ 73°F | 500,000 | psi | ASTM D 790 | ||
| Impact strength (Izod) | @ 73°F | 0.70 | ft-lbs/in | ASTM D 256 | ||
| Rockwell hardness | M Scale, @ 73°F | 101 | ASTM D 785 | |||
| Coefficient of friction | Dynamic, 40 psi, 50 fpm | 0.25 | % | ASTM D 3702 1) | 1) Injection molded specimen | |
| Coefficient of friction | Static | 0.19 | % | ASTM D 3702 1) | ||
| Wear rate | Against Steel, 40 psi, 50 fpm | 210*10-10 | in3-min/ft-lbs-hr | ASTM D 3702 1) | ||
| Thermal | Melting temperature | 490 | °F | 2) | 2) Per ASTM D3418 | |
| Heat distortion temperature | @ 264 psi | 175 | °F | ASTM D 648 | ||
| Heat distortion temperature | @ 66 psi | 240 | °F | ASTM D 648 | ||
| Service temperature | Long Term | 230 | °F | – | ||
| Service temperature | Intermittent | 320 | °F | – | ||
| Thermal expansion (CLTE) | 3.9*105 | in/in/°F | ASTM D 696 | |||
| Specific heat | 0.28 | BTU/ln-F° | – | |||
| Thermal conductivity | 2.01 | BTU-in/hr-ft2-°F | – | |||
| Electrical | Volume resistivity | 1015 | Ω*cm | ASTM D 257 3) | 3) Injection molded specimen | |
| Dielectric strength | 400 | V/mil | ASTM D 149 3) | |||
| Dissipation factor | @ 60 Hz, 73°F | 0.002 | % | ASTM D 150 3) | ||
| Dielectric constant | @ 60 Hz, 73°F, 50% RH | 3.4 | % | ASTM D 150 3) | ||
| Other | Moisture absorption | @ 24 hours, 73°F | 0.10 | % | ASTM D 570 | |
| Moisture absorption | @ saturation, 73°F | 0.50 | % | ASTM D 570 | ||
| Flammability (UL94) | HB | % | 4) | 4) Estimated |
