Polyethylene Terephthalate – known as PET or polyester — is a thermoplastic polyester that can be amorphous, crystalline, or a mixture of both, depending on how it is processed. All forms provide good chemical resistance and durability.
Benefits of Polyester (PET)
Good for both wet and dry environments
High strength and rigidity – ideal for close tolerance parts
Excellent stain resistance
Good wear resistance and excellent dimensional stability
Better resistance to acids than nylon or acetal
Dimensions: 24″ x 36″, 24″ x 48″
Thickness: 0.001″ – 0.015″
Technical Resources
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- Everything You Need to Know about HDPE
- Benefits and Attributes – Acetal Plastics
- UHMW Chemical Resistance
- PETG – A 2022 Guide to Engineering and Industrial Applications
Suppliers / Brands
Common Applications
Bearings and Bushings
Chemical Processing
Die Cutters
Food and Beverage Preparation and Processing
Gears
Machine Shops
Membrane Switches
Milling and Mining
Wear Strips
Physical Properties
| Units | ASTM Test | PET | |
|---|---|---|---|
| Tensile strength @ break @ 73°F | psi | D638 | 3,480 – 11,200 |
| Flexural modulus @ 73°F | psi | D790 | 270,000 – 1.42E 6 |
| Izod impact (notched) | ft-lbs/in of notch | D256 | 0.26 – 1.9 |
| Coefficient of linear thermal expansion (CLTE) | (in/in F) | D696 | 1.70E-05 |
| Coefficient of friction | D1894 | 0.30 – 0.50 | |
| Water absorption – 24 hours – 1/8″ thick | 0.036 – 0.11% | D570 | 0.098 – 0.10 |
| Deflection Temperature Under Load @ 264 psi | °F | D648 | 136 – 446 |
* Technical Data is provided courtesy of UL Prospector (www.ulprospector.com) and IAPD (www.IAPD.org).
Data is to be considered representative and is provided for guidance only. All product performance must be verified by the user under actual application conditions.
