Poly(butylene terephthalate) Reinforced with 20% Glass Fibers (PBT+GF20)

Alternative and trade names
Ultradur®, Crastin®, Celanex®, Pocan®
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Description

Reinforced Poly(butylene terephthalate) with 20% glass fiber. Depending on the grade, the key features are:


  • Improved laser-transparency, NIR-laser transparent coloring (black)
  • Flame retardant / halogen free flame retardant
  • Lubricated
  • Stiffness and toughness
  • Heat resistance
  • Friction and wear resistance
  • Excellent surface finishes and good colourability
  • Properties

    General

    Density ρ

    1.4 - 1.54 g/cm³ at 20 °C

    Mechanical

    Elastic modulus E

    6 - 10 GPa at 20 °C

    Elongation A

    2.5 - 4.5 % at 20 °C

    Impact strength, Charpy notched Ivnot

    5 - 20 kJ/m² at 20 °C

    Impact strength, Charpy unnotched Iunnot

    30 - 70 kJ/m² at 20 °C

    Max allowed stress σmax

    90 - 140 MPa at 20 °C

    at 2.5-4.5% strain

    Thermal

    Coefficient of thermal expansion α

    2E-5 - 1.2E-4 1/K at 20 °C

    Flammability

    UL 94 HB

    Max service temperature, short Tmaxshort

    210 °C

    Melting point Tm

    220 - 225 °C

    Specific heat capacity cp

    1500 J/(kg·K) at 20 °C

    Thermal conductivity λ

    0.27 W/(m·K) at 20 °C

    Electrical

    Dielectric constant εr

    3.2 - 4.2 [-] at 20 °C

    Electrical resistivity ρel

    1.00E+13 - 1.00E+14 Ω·m at 20 °C

    Optical

    Transparency

    no

    Technological properties

    Application areas

    Small-motor housings, headlamp frames, windshield wiper arms, toaster casings, sunroof frames, exterior mirrors

    Fillers

    20% Glass Fibers

    Processing methods

    Injection molding, extrusion

    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.