Quick Specs
Temperature Range
‑40°C to +110°C
Available Sizes
Sheets: 6-100mm thick | Rods: 8-100mm dia
Available in
Sheet | Rod
PBT (Polybutylene Terephthalate)
Polybutylene Terephthalate (PBT) is a semi-crystalline, high-performance engineering thermoplastic. It is a member of the polyester family, closely related to PET (Polyethylene Terephthalate) but with a slightly different molecular structure that makes it more flexible and easier to process.
Key Features
- High Strength & Stiffness
- High Impact Resistance
- Low Moisture Absorption
- Good Machinability
- Excellent Electrical Insulation
Applications
- Precision Gears
- Pump Impellers
- Conveyor Belt Links
- Valve Bodies
- Bearings
Available Grades & Variants
PBT+GF
High-strength, heat-resistant engineering plastic reinforced with glass fibers for superior stiffness and dimensional stability.
Technical Specifications
Mechanical properties
Density | ASTM D792 | g/cm3 | 1.31 |
Tensile yield strength | ASTM D638 | Mpa | 80 |
Breaking elongation | ASTM D638 | % | 4 |
Bending strength | ASTM D790 | Mpa | 100 |
Flexural modulus | ASTM D790 | Mpa | 2400 |
Shore hardness | ASTM D2240 | D | 90 |
Impact strength | ASTM D256 | J/M | 70 |
Thermal Properties
Melting point | DSC | °C | 224 |
Heat distortion temperature | ASTM D648 | °C | 110 |
Operating temperature | – | °C | 100 |
Maximum operating temperature | – | °C | 150 |
Thermal conductity | DIN 52612-1 | W/(K-M) | 0.24 |
Coefficient of linear themal | ASTM D696 | 10-5-1/K | – |
Electrical Properties
Dielectric strength | ASTM D150 | KV-mm | 22 |
Dielectric loss factor | ASTM D150 | – | 0.015 |
| Volume resistivit | ASTM D257 | Ω.cm | 1015 |
Surface resistivity | ASTM D257 | Ω | 1014 |
Dielectric constant | ASTM D149 | – | 3.3 |
Chemical Properties
Water absorption | 23C 60%RH | % | 0.1 |
Acid resistance | 23C 60%RH | + |
Others
Flammability | UL 94 | HB |