ERTALYTE® PET-P (POLYETHYLENE TEREPHTHALATE POLYESTER)
Material Information
Ertalyte® PET-P is an unreinforced, semi-crystalline thermoplastic polymer based on the polyethylene terephthalate (PET-P). PET-P in general is known to have the best dimensional stability, excellent wear resistance, a low coefficient of friction, high strength and rigidity, excellent stain resistance, good chemical and abrasion resistance, and resistance to moderately acidic solutions. Ertalyte® PET-P has a continuous service temperature of 210º F and also retains significantly more of its original strength than nylon or acetal up to 180º F. Because of its low moisture absorption rate, Ertalyte® PET-P’s mechanical and electrical properties are virtually unaffected by moisture. These properties combined make Ertalyte® PET-P ideal for use in the manufacture of precision mechanical parts. It is available in a natural and black color in the form of rod and plate. Both colors are FDA compliant, but only the natural color is also USDA, 3A-Dairy and Canada AG compliant.
Application
- Food processing
- Equipment industries
- Water and soft drink bottles
- Process and test equipment manifolds
- Carousels
- Filter tracks
- Rings, disks, rollers
- Fuel pump components
- Printing equipment
Properties
- Superior dimensional stability
- Excellent wear resistance
- Low coefficient of friction
- Very good chemical resistance
- Low water absorption
- Stain resistant
- FDA compliant (natural and black)
- USDA, 3A-Dairy, Canada AG compliant (natural)
Physical |
Astm Test Method |
PET-P (Ertalyte®) |
| Density (lb/in^3) | D792 | 0.051 |
| Specific Gravity | D792 | 1.41 |
| Water Absorption @ 24 hours (%) | D570 | 0.07 |
Mechanical |
||
| Tensile Strength (PSI) | D638 | 12,400 |
| Tensile Modulus (PSI) | D638 | 460,000 |
| Tensile Elongation at Break (%) | D638 | 20 |
| Flexural Strength (PSI) | D790 | 18,000 |
| Flexural Modulus (PSI) | D790 | 490,000 |
| Compressive Strength (PSI) | D695 | 15,000 |
| Compressive Modulus (PSI) | D695 | 420,000 |
| Izod Impact (Notched), ft-lb/in | D256 | 0.5 |
| Rockwell Hardness | D785 | M93, R125 |
Thermal |
||
| Coefficient of Thermal Expansion, 10^-5/°F |
D696 | 3.3 |
| Heat Deflection Temperature 264 psi, ºF | D648 | 240 |
| Melting Point, °F | D3418 | 491 |
| Continous Service Temp (Operating), °F | – | 210 |
| Thermal Conductivity, BTU-in/hr-ft² °F | F433 | 2 |
| Flammability Rating | UL94 | HB |
Electrical |
||
| Dielectric Strength, Short Term, (Volts/Mil) @ .125″ Thick |
D149 | 385 |
| Volume Resistivity (ohm/square) | D257 | >10^13 |
| Dielectric Constant at 60HZ | D150 | 3.4 |
| Dissipation Factor at 60HZ | D150 | – |
NOTE:
The information contained herein are typical values intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control. Contact us for manufacturers' complete material property datasheets. All values at 73°F (23°C) unless otherwise noted.