PBT Characteristics
Polybutylene Terephthalate (PBT) is a high-performance thermoplastic that is an optimal choice for food processing applications, as it is FDA- and USDA- approved for use with food. It offers an excellent combination of wear and moisture resistance with strength and toughness.
PBT is solvent-resistant at room temperature and can withstand a continuous operating temperature of 230° F. It offers excellent dimensional stability with high creep resistance and low moisture absorption. PBT is easily machined and fabricated.
- Heat- and solvent-resistant
- FDA compliant
- High impact strength
- Meets ASTM D6261
- Can be intricately machined
Applications for PBT
- Bushes, bearings and pistons
- Valves and manifolds
- Automotive parts
- Electronic equipment
- Food processing machinery parts
Contact a Dielectric Manufacturing knowledge expert to discuss the use of PBT for fabrication of your plastic parts. Call 800-367-9122 or email sales@dielectricmfg.com.
PBT Material Properties
| Property | Metric | units | English | units | ||
|---|---|---|---|---|---|---|
| General | ||||||
| Density | 1.3e3 - 1.38e3 | kg/m^3 | 0.047 - 0.0499 | lb/ft^3 | ||
| Mechanical | ||||||
| Yield Strength | 5.65e7 - 6e7 | Pa | 8.19 - 8.7 | ksi | ||
| Tensile Strength | 5.65e7 - 6e7 | Pa | 8.19 - 8.7 | ksi | ||
| Elongation | 0.5 - 3 | % strain | 8.6 - 14.5 | % strain | ||
| Hardness (Vickers) | 1.67e8 - 1.77e8 | Pa | 17-18 | HV | ||
| Impact Strength (un-notched) | 1.34e5 - 2e5 | J/m^2 | 63.8 - 95.2 | ft.lbf/in^2 | ||
| Fracture Toughness | 1.59e6 - 2.75e6 | Pa/m^0.5 | 1.45 - 2.51 | ksi/in^0.5 | ||
| Young's Modulus | 1.93e9 - 3e9 | Pa | 0.28 - 0.435 | 10^6 psi | ||
| Thermal | ||||||
| Max Service Temperature | 112 - 127 | °C | 234 - 261 | °F | ||
| Melting Temperature | 220 - 267 | °C | 428 - 513 | °F | ||
| Insulator or Conductor | Insulator | Insulator | ||||
| Specific Heat Capability | 1.42e3 - 1.48e3 | J/kg °C | 0.339 - 0.353 | BTU/lb. °F | ||
| Thermal Expansion Coefficient | 1.08e-4 - 1.71e-7 | strain/°C | 60-95 | µstrain/°F | ||
| Eco | ||||||
| CO2 Footprint | 2.73 - 3.02 | kg/kg | 2.73 - 3.02 | lb/lb | ||
| Recyclable | Yes | Yes |
