PET (polyethylene terephthalate, semicrystalline) is a strong and stiff engineering plastic with excellent chemical resistance, and bearing and wear properties. It exhibits low thermal expansion, low moisture absorption, and excellent wear characteristics, even in wet environments. PET has excellent machining characteristics and is widely used for food processing machinery components, valve components, filler pistons, bearings and bushings, and wheels and rollers.
PET is available in an enhanced wear, FDA compliant grade. Please ask your Curbell Plastics representative for more specific information.
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For a glossary of terms, see our Plastic Properties Descriptions.
TYPICAL PROPERTIES
| |
UNITS |
ASTM TEST |
|
| Tensile Strength |
psi |
D638 |
11,500 |
| Flexural Modulus of Elasticity |
psi |
D790 |
400,000 |
| Izod Impact (notched) |
ft-lbs/in of notch |
D256 |
0.7 |
| Heat Deflection Temperature (66psi / 264psi) |
°F |
D648 |
240 175 |
Water Absorption
(Immersion 24 hours) |
% |
D570 |
0.10 |
PHYSICAL PROPERTIES
| |
UNITS |
ASTM TEST |
|
| Specific Gravity |
- |
D792 |
1.38 |
Water Absorption
(Immersion 24 hours) |
% |
D570 |
0.10 |
MECHANICAL PROPERTIES
| |
UNITS |
ASTM TEST |
|
| Tensile Strength |
psi |
D638 |
11,500 |
| Tensile Modulus of Elasticity |
psi |
D638 |
400,000 |
| Tensile Elongation |
% |
D638 |
70 |
| Flexural Strength |
psi |
D790 |
15,000 |
| Flexural Modulus of Elasticity |
psi |
D790 |
400,000 |
| Compressive Strength |
psi |
D695 |
- |
| Hardness |
scale as noted |
D785, D2240 |
M93, R125, Shore D 87 |
| Izod Impact |
ft-lbs/in |
D256 |
0.7 |
THERMAL PROPERTIES
| |
UNITS |
ASTM TEST |
|
| Coefficient of Linear Thermal Expansion |
in/in/°F x 10-5 |
D696 |
3.9 |
| Heat Deflection Temperature (66psi / 264psi) |
°F |
D648 |
240 175 |
| Max Continuous Service Temperature In Air |
°F |
- |
230 |
ELECTRICAL PROPERTIES
| |
UNITS |
ASTM TEST |
|
| Dielectric Strength |
V/mil |
D149 |
400 |
OPTICAL PROPERTIES
| |
UNITS |
ASTM TEST |
|
| Light Transmittance |
% |
D1003 |
- |
| Haze |
% |
D1003 |
- |
OTHER
| |
UNITS |
ASTM TEST |
|
| Coefficient of Friction |
- |
Dynamic |
0.25 |
Values may vary according to brand name. Please ask your Curbell Plastics representative for more specific information about an individual brand.
Still Not Sure if You Need PET? Research PET or Ask a Plastics Expert.