Overview of materials for Polybutylene Terephthalate (PBT), Extrusion Grade

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Overview of materials for Polybutylene Terephthalate (PBT), Extrusion Grade
Categories:	Polymer; Thermoplastic; Polyester, TP; Polybutylene Terephthalate (PBT); Polybutylene Terephthalate (PBT), Extrusion Grade
Material Notes:	This property data is a summary of similar materials in the MatWeb database for the category "Polybutylene Terephthalate (PBT), Extrusion Grade". Each property range of values reported is minimum and maximum values of appropriate MatWeb entries. The comments report the average value, and number of data points used to calculate the average. The values are not necessarily typical of any specific grade, especially less common values and those that can be most affected by additives or processing methods.
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Physical Properties	Original Value	Comments

Density	1.24 - 1.40 g/cc	Average value: 1.32 g/cc Grade Count:24
Water Absorption	0.0800 - 0.450 %	Average value: 0.207 % Grade Count:6
Moisture Absorption at Equilibrium	0.0800 - 0.200 %	Average value: 0.133 % Grade Count:6
Linear Mold Shrinkage	0.00160 - 0.0230 cm/cm	Average value: 0.0140 cm/cm Grade Count:12
Linear Mold Shrinkage, Transverse	0.00160 - 0.0170 cm/cm	Average value: 0.0125 cm/cm Grade Count:7
Melt Flow	8.00 - 236 g/10 min	Average value: 44.6 g/10 min Grade Count:12

Mechanical Properties	Original Value	Comments
Hardness, Rockwell R	79.0 - 119	Average value: 108 Grade Count:5
Tensile Strength, Ultimate	48.0 - 68.0 MPa	Average value: 55.5 MPa Grade Count:17
Tensile Strength, Yield	40.0 - 60.0 MPa	Average value: 53.5 MPa Grade Count:8
Elongation at Break	2.90 - 300 %	Average value: 81.6 % Grade Count:23
Elongation at Yield	2.90 - 4.50 %	Average value: 3.75 % Grade Count:6
Modulus of Elasticity	1.75 - 2.86 GPa	Average value: 2.53 GPa Grade Count:8
Flexural Yield Strength	70.0 - 94.0 MPa	Average value: 78.9 MPa Grade Count:11
Flexural Modulus	0.196 - 2.55 GPa	Average value: 2.06 GPa Grade Count:17
Izod Impact, Notched	0.0400 - 0.800 J/cm	Average value: 0.543 J/cm Grade Count:11
Izod Impact, Notched (ISO)	7.00 - 7.00 kJ/m² @Temperature -30.0 - -30.0 °C	Average value: 7.00 kJ/m² Grade Count:1
Izod Impact, Unnotched (ISO)	NB - NB @Temperature -30.0 - -30.0 °C	Grade Count:1
Charpy Impact Unnotched	15.0 J/cm² - NB	Average value: 15.0 J/cm² Grade Count:4
	22.0 J/cm² - NB @Temperature -30.0 - -30.0 °C	Average value: 22.0 J/cm² Grade Count:4
Charpy Impact, Notched	0.160 - 1.00 J/cm²	Average value: 0.433 J/cm² Grade Count:9
	0.500 - 1.00 J/cm² @Temperature -30.0 - -30.0 °C	Average value: 0.700 J/cm² Grade Count:3

Electrical Properties	Original Value	Comments
Electrical Resistivity	1.00e+15 - 1.00e+16 ohm-cm	Average value: 5.83e+15 ohm-cm Grade Count:6
Surface Resistance	1.00e+14 - 1.00e+15 ohm	Average value: 7.00e+14 ohm Grade Count:3
Dielectric Constant	3.10 - 3.70	Average value: 3.37 Grade Count:7
Dielectric Strength	15.7 - 28.0 kV/mm	Average value: 23.1 kV/mm Grade Count:8
Dissipation Factor	0.00100 - 0.0200	Average value: 0.0108 Grade Count:4
Arc Resistance	110 - 180 sec	Average value: 130 sec Grade Count:4
Comparative Tracking Index	600 V	Average value: 600 V Grade Count:3

Thermal Properties	Original Value	Comments
CTE, linear	40.0 - 130 µm/m-°C	Average value: 85.9 µm/m-°C Grade Count:11
CTE, linear, Transverse to Flow	70.0 - 130 µm/m-°C	Average value: 95.0 µm/m-°C Grade Count:5
Melting Point	215 - 254 °C	Average value: 226 °C Grade Count:15
Deflection Temperature at 0.46 MPa (66 psi)	60.0 - 170 °C	Average value: 137 °C Grade Count:11
Deflection Temperature at 1.8 MPa (264 psi)	50.0 - 170 °C	Average value: 65.2 °C Grade Count:20
Vicat Softening Point	130 - 216 °C	Average value: 199 °C Grade Count:5
Flammability, UL94	HB - V-2	Grade Count:17

Processing Properties	Original Value	Comments
Processing Temperature	230 - 260 °C	Average value: 246 °C Grade Count:5
Melt Temperature	250 - 270 °C	Average value: 260 °C Grade Count:5
Mold Temperature	60.0 - 100 °C	Average value: 80.0 °C Grade Count:9
Drying Temperature	80.0 - 120 °C	Average value: 105 °C Grade Count:6

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to go back to viewing the property data in MatWeb's normal format.

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