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

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Overview of materials for Polybutylene Terephthalate (PBT), Impact Grade
Categories:	Polymer; Thermoplastic; Polyester, TP; Polybutylene Terephthalate (PBT); Polybutylene Terephthalate (PBT), Impact Grade
Material Notes:	This property data is a summary of similar materials in the MatWeb database for the category "Polybutylene Terephthalate (PBT), Impact 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	1.13 - 1.73 g/cc	Average value: 1.31 g/cc Grade Count:69
	1.03 - 1.17 g/cc @Temperature 250 - 250 °C	Average value: 1.10 g/cc Grade Count:2
Filler Content	10.0 - 30.0 %	Average value: 18.3 % Grade Count:4
Water Absorption	0.0500 - 0.350 %	Average value: 0.116 % Grade Count:12
Moisture Absorption at Equilibrium	0.0500 - 0.400 %	Average value: 0.178 % Grade Count:16
Water Absorption at Saturation	0.200 - 0.800 %	Average value: 0.420 % Grade Count:5
Maximum Moisture Content	0.0200 - 0.0400	Average value: 0.0240 Grade Count:5
Linear Mold Shrinkage	0.00160 - 0.0300 cm/cm	Average value: 0.0155 cm/cm Grade Count:48
	0.00400 - 0.00400 cm/cm @Temperature 80.0 - 80.0 °C	Average value: 0.00400 cm/cm Grade Count:2
Linear Mold Shrinkage, Transverse	0.00160 - 0.0300 cm/cm	Average value: 0.0156 cm/cm Grade Count:20
	0.00900 - 0.00900 cm/cm @Temperature 80.0 - 80.0 °C	Average value: 0.00900 cm/cm Grade Count:2
Melt Flow	2.00 - 73.8 g/10 min	Average value: 18.4 g/10 min Grade Count:27

Mechanical Properties	Original Value	Comments
Hardness, Rockwell R	104 - 120	Average value: 113 Grade Count:12
Hardness, Shore D	65.0 - 70.0	Average value: 66.7 Grade Count:3
Tensile Strength, Ultimate	27.6 - 145 MPa	Average value: 56.9 MPa Grade Count:40
Tensile Strength, Yield	27.0 - 135 MPa	Average value: 49.4 MPa Grade Count:40
Elongation at Break	1.50 - 180 %	Average value: 42.1 % Grade Count:52
Elongation at Yield	3.00 - 130 %	Average value: 14.6 % Grade Count:13
Modulus of Elasticity	1.45 - 17.0 GPa	Average value: 3.36 GPa Grade Count:32
Flexural Yield Strength	45.0 - 172 MPa	Average value: 79.1 MPa Grade Count:46
Flexural Modulus	1.45 - 7.58 GPa	Average value: 2.44 GPa Grade Count:51
Poissons Ratio	0.390 - 0.420	Average value: 0.410 Grade Count:3
Izod Impact, Notched	0.374 J/cm - NB	Average value: 3.62 J/cm Grade Count:39
	2.24 - 7.4746 J/cm @Temperature -40.0 - -28.9 °C	Average value: 4.31 J/cm Grade Count:3
Izod Impact, Unnotched	18.7 J/cm - NB	Average value: 18.7 J/cm Grade Count:7
Izod Impact, Notched (ISO)	4.00 - 75.6 kJ/m²	Average value: 28.2 kJ/m² Grade Count:17
	6.00 - 20.0 kJ/m² @Temperature -40.0 - -30.0 °C	Average value: 10.5 kJ/m² Grade Count:12
Izod Impact, Unnotched (ISO)	65.0 kJ/m² - NB	Average value: 65.0 kJ/m² Grade Count:8
	60.0 kJ/m² - NB @Temperature -40.0 - -30.0 °C	Average value: 193 kJ/m² Grade Count:8
Charpy Impact Unnotched	6.50 J/cm² - NB	Average value: 6.50 J/cm² Grade Count:13
	6.50 J/cm² - NB @Temperature -40.0 - -30.0 °C	Average value: 21.0 J/cm² Grade Count:12
Charpy Impact, Notched	1.00 - 9.00 J/cm²	Average value: 4.16 J/cm² Grade Count:17
	0.900 - 2.50 J/cm² @Temperature -40.0 - -20.0 °C	Average value: 1.27 J/cm² Grade Count:12
Gardner Impact	36.2 - 36.2 J	Average value: 36.2 J Grade Count:8

Electrical Properties	Original Value	Comments
Electrical Resistivity	1.00e+11 - 1.00e+17 ohm-cm	Average value: 1.90e+16 ohm-cm Grade Count:24
Surface Resistance	1.00e+6 - 1.00e+15 ohm	Average value: 3.21e+14 ohm Grade Count:15
Dielectric Constant	3.00 - 3.70	Average value: 3.40 Grade Count:6
Dielectric Strength	15.7 - 36.0 kV/mm	Average value: 25.5 kV/mm Grade Count:16
Dissipation Factor	0.00109 - 0.0240	Average value: 0.0137 Grade Count:4
Arc Resistance	110 - 130 sec	Average value: 119 sec Grade Count:4
Comparative Tracking Index	225 - 600 V	Average value: 525 V Grade Count:9

Thermal Properties	Original Value	Comments
CTE, linear	25.2 - 190 µm/m-°C	Average value: 103 µm/m-°C Grade Count:15
	233 - 233 µm/m-°C @Temperature 55.0 - 160 °C	Average value: 233 µm/m-°C Grade Count:1
CTE, linear, Transverse to Flow	100 - 190 µm/m-°C	Average value: 135 µm/m-°C Grade Count:8
	191 - 191 µm/m-°C @Temperature 55.0 - 160 °C	Average value: 191 µm/m-°C Grade Count:1
Specific Heat Capacity	2.10 - 2.10 J/g-°C @Temperature 250 - 250 °C	Average value: 2.10 J/g-°C Grade Count:1
Thermal Conductivity	0.200 - 0.200 W/m-K @Temperature 250 - 250 °C	Average value: 0.200 W/m-K Grade Count:1
Melting Point	210 - 255 °C	Average value: 225 °C Grade Count:27
Maximum Service Temperature, Air	80.0 - 105 °C	Average value: 96.7 °C Grade Count:3
Deflection Temperature at 0.46 MPa (66 psi)	90.0 - 225 °C	Average value: 142 °C Grade Count:44
Deflection Temperature at 1.8 MPa (264 psi)	48.0 - 210 °C	Average value: 80.5 °C Grade Count:57
Vicat Softening Point	105 - 215 °C	Average value: 163 °C Grade Count:10
Glass Transition Temp, Tg	55.0 °C	Average value: 55.0 °C Grade Count:3
UL RTI, Electrical	75.0 - 130 °C	Average value: 112 °C Grade Count:3
UL RTI, Mechanical with Impact	75.0 - 130 °C	Average value: 112 °C Grade Count:3
UL RTI, Mechanical without Impact	75.0 - 110 °C	Average value: 87.2 °C Grade Count:3
Flammability, UL94	HB - V-0	Grade Count:48
Glow Wire Test	650 - 960 °C	Average value: 778 °C Grade Count:6

Processing Properties	Original Value	Comments
Processing Temperature	230 - 280 °C	Average value: 254 °C Grade Count:13
Nozzle Temperature	225 - 280 °C	Average value: 249 °C Grade Count:11
Melt Temperature	190 - 280 °C	Average value: 249 °C Grade Count:33
Mold Temperature	10.0 - 130 °C	Average value: 72.7 °C Grade Count:39
Drying Temperature	80.0 - 140 °C	Average value: 118 °C Grade Count:37
Moisture Content	0.0200 - 0.200 %	Average value: 0.0674 % Grade Count:17
Dew Point	-40.0 - -28.9 °C	Average value: -32.6 °C Grade Count:3
Injection Pressure	44.1 - 103 MPa	Average value: 74.8 MPa Grade Count:6
Vent Depth	0.00127 - 0.00381 cm	Average value: 0.00145 cm Grade Count:7

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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