Poly(butylene terephthalate) Reinforced with 30% Glass Beads (PBT+GB30)

Alternative and trade names
Ultradur®, Bergadur™, TECACOMP®, Arnite®, Raditer®, VYPET™
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Reinforced Poly(butylene terephthalate) with 30% glass bead for low-warpage technical parts and depending on the grade with flame retardant based in halogene and good surface finish.

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.

Ashby charts

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1.49 - 1.55 g/cm³

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Elastic modulus

3.5 - 6.5 GPa

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2.0 - 6.0 %

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Impact strength, Charpy notched

2.0 - 5.0 kJ/m²

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Impact strength, Charpy unnotched

20 kJ/m²

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60 kJ/m²

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Tensile strength

50.0 - 80.0 MPa

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at 2-6% strain



Coefficient of thermal expansion

7e-05 - 0.0001 1/K

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Melting point

220.0 - 225.0 °C

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Specific heat capacity

1500 J/(kg·K)

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Thermal conductivity

0.27 W/(m·K)

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UL 94 HB



Dielectric constant

3.5 [-]

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4.5 [-]

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Electrical resistivity

100000000000000 Ω·m

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Technological properties

Application areas

Optical instruments, gas meter housings


30% Glass Bead


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Processing methods

Injection molding