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Properties Profile

PBT | PBT 30% GF

PBT - Polybutylene Terephthalate
  Select unit system:
PropertyValue
   Dimensional stability
Coefficient of linear thermal expansion6 - 10 10^-5 °C-1
H2O absorption 24 hours0.1 - 0.2 %
Shrinkage0.5 - 2.2 %
   Electrical performances
Arc resistance124 - 190 sec
Dielectric constant2.9 - 4 
Dielectric rigidity15 - 30 kv/mm
Dissipation factor10 - 200 10^-4
Volume resistivity14 - 17 10^X Ohm.cm
   Fire performances
Fire resistance (LOI)20 - 24 %
Flammability UL94HB
   Mechanical properties
Elongation at break5 - 300 %
Elongation at yield3.5 - 9 %
Flexibility (Flexural Modulus)2 - 4 GPa
Hardness Rockwell M70 - 90 
Hardness Shore D90 - 95 
Stiffness (Flexural Modulus)2 - 4 GPa
Strength at break (tensile)40 - 50 MPa
Toughness (Notched Izod impact at room temperature)27 - 999 J/m
Toughness at low T (Notched Izod impact at low temperature)27 - 120 J/m
Young modulus2 - 3 GPa
   Physical properties
Density1.3 - 1.4 g/cm^3
Glass transition temperature55 - 65 °C
   Radiation resistance
Gamma radiation resistanceGood
UV light resistanceFair
   Service temperature
Ductile/fragile temperature-40 °C
HDT @0.46 Mpa (67 psi)115 - 150 °C
HDT @1.8 Mpa (261 psi)50 - 85 °C
Max continuous Service temperature80 - 140 °C
Min continuous service temperature-40 °C
   Others
Thermal insulation (Thermal conductivity)0.21 W/m.K
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