Poly(butylene terephthalate) Reinforced with 50% Glass Fibers (PBT+GF50)

Alternative and trade names
Ultradur®, Bergadur™, Celanex®, TECACOMP®, Arnite®, Raditer®, VYPET™
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Description

Polybutylene terephthalate with 50% glass fiber reinforced. Thermoplastic polyester (PBT) is a semicrystalline structure. The key features are:


  • Very hard, rigid and strong
  • Good creep resistance
  • High heat-distortion temperature, especially for glass fiber-reinforced grades
  • Service temperature to 140°C
  • Very good low-friction and wear-resistant properties
  • High dimensional stability (low thermal expansion coefficient, low water absorption)
  • Good electrical properties
  • Good chemical resistance
  • No environmental stress cracking
  • Good weathering resistance
  • Rapid crystallization and fast cycle time
  • Paintable
  • Flame-retardant grades available (UL 94 V-0, in some cases 5VA)
  • This material data has been provided by M-Base.

    All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
    Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

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    Properties

    General

    PropertyValue

    Density

    1.7 - 1.73 g/cm³

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    Mechanical

    PropertyValueComment

    Elastic modulus

    14.0 - 18.0 GPa

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    Elongation

    1.5 - 2.0 %

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    Impact strength, Charpy notched

    10.0 - 15.0 kJ/m²

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    Impact strength, Charpy unnotched

    50 kJ/m²

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    70 kJ/m²

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    Tensile strength

    140.0 - 170.0 MPa

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    at 1.5-2% strain

    Thermal

    PropertyValue

    Coefficient of thermal expansion

    2e-05 - 8e-05 1/K

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    Melting point

    220.0 - 225.0 °C

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    Specific heat capacity

    1400 J/(kg·K)

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    Thermal conductivity

    0.27 W/(m·K)

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    Flammability

    UL 94 HB

    Electrical

    PropertyValue

    Dielectric constant

    3.8 [-]

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    4.5 [-]

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    Electrical resistivity

    100000000000000 Ω·m

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    Optical

    PropertyValue

    Transparency

    no

    Technological properties

    Property
    Application areas

    Automotive exterior, door handles, mirror housings, wiper arms

    Fillers

    50% Glass Fiber

    Other

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    Processing methods

    Injection molding