PBT (Polybutylene Terephthalate)

 In Food-Safe Materials, Thermoplastics

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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 Metricunits Englishunits
General
Density1.3e3 - 1.38e3kg/m^30.047 - 0.0499lb/ft^3
Mechanical
Yield Strength5.65e7 - 6e7Pa8.19 - 8.7ksi
Tensile Strength5.65e7 - 6e7Pa8.19 - 8.7ksi
Elongation0.5 - 3% strain8.6 - 14.5% strain
Hardness (Vickers)1.67e8 - 1.77e8Pa17-18HV
Impact Strength (un-notched)1.34e5 - 2e5J/m^263.8 - 95.2ft.lbf/in^2
Fracture Toughness1.59e6 - 2.75e6Pa/m^0.51.45 - 2.51ksi/in^0.5
Young's Modulus1.93e9 - 3e9Pa0.28 - 0.43510^6 psi
Thermal
Max Service Temperature112 - 127°C234 - 261°F
Melting Temperature220 - 267°C428 - 513°F
Insulator or ConductorInsulatorInsulator
Specific Heat Capability1.42e3 - 1.48e3J/kg °C0.339 - 0.353BTU/lb. °F
Thermal Expansion Coefficient1.08e-4 - 1.71e-7strain/°C60-95µstrain/°F
Eco
CO2 Footprint2.73 - 3.02kg/kg2.73 - 3.02lb/lb
RecyclableYesYes