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TECHNICAL DESCRIPTION
PolyButylene Teraphalate polyester (PBT) is a semi-crystalline thermoplastic.
GENERAL PROPERTIES
PBT offers excellent mechanical properties combined with good chemical resistance. PBT has good impact resistance and toughness, low coefficient of friction & wear, and does not need lubrication. It also is resistant to chemicals, chlorine, water, and steam.
KEY PROPERTIES
- No center line porosity
- Superior chemical resistance
- Low coefficient of friction
- Good impact strength and ductility
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- Hand and durable surface
- FDA, USDA, 3A Dairy approved grades
- Replaces brass, aluminum, steel
- UHMW, acetal
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| TYPICAL PROPERTIES OF PBT |
| PHYSICAL |
| ASTM or UL test |
Property |
PBT |
| D792 |
Density (lb/in3)
(g/cm3) |
0.0473
1.313 |
| D570 |
Water Absorption, 24 hrs (%) |
0.07 |
| MECHANICAL |
| D638 |
Tensile Strength (psi) |
9,400 |
| D638 |
Tensile Modulus (psi) |
425,000 |
| D638 |
Tensile Elongation at Break (%) |
50 |
| D790 |
Flexural Strength (psi) |
11,600 |
| D790 |
Flexural Modulus (psi) |
420,000 |
| D695 |
Compressive Strength (psi) |
11,000 |
| D695 |
Compressive Modulus (psi) |
- |
| D785 |
Hardness, Rockwell |
R120 |
| D256 |
IZOD Notched Impact (ft-lb/in) |
0.7 |
| THERMAL |
| D696 |
Coefficient of Linear Thermal Expansion
(x 10-5 in./in./°F) |
4.5 |
| D648 |
Heat Deflection Temp (°F/°C) at 264 psi |
200/93 |
| D3418 |
Melting Temp (°F/°C) |
420/215 |
| - |
Max Operating Temp (°F/°C) |
221/105 |
| C177 |
Thermal Conductivity
(BTU-in/ft2-hr-°F)
(x 10-4 cal/cm-sec-°C) |
-3
-3 |
| UL94 |
Flammability Rating |
HB |
| ELECTRICAL |
| D149 |
Dielectric Strength (V/mil) short time, 1/8” thick |
410 |
| D150 |
Dielectric Constant at 60 Hz |
3.3 |
| D150 |
Dissipation Factor at 60 Hz |
0.002 |
| D257 |
Volume Resistivity (ohm-cm) at 50% RH |
4.5 x 1016 |
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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.
All values a 73°F (23°C) unless otherwise noted.
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