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Elmet Technologies

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Celanese Celanex® 2008 PBT, Unfilled
Categories: Polymer; Thermoplastic; Polyester, TP; Polybutylene Terephthalate (PBT)
Material Notes: Celanex 2008 is a general purpose, unreinforced polybutylene terephthalate with a good balance of mechanical properties and processability for use in melt blown applications.

Information provided by Celanese
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Physical PropertiesOriginal ValueComments
Specific Gravity 1.31 g/ccASTM D792
Density 1.31 g/ccISO 1183
Water Absorption 0.090 %
@Temperature 22.8 °C		24hr immersion; ASTM D570
Moisture Absorption 0.170 %23°C/50%RH; ISO 62
Linear Mold Shrinkage, Flow 0.018 - 0.020 cm/cmASTM D955
 0.018 - 0.020 cm/cmISO 294-4
Linear Mold Shrinkage, Transverse 0.018 - 0.020 cm/cmISO 294-4
 
Mechanical PropertiesOriginal ValueComments
Hardness, Rockwell M 72ISO 2039-2
Tensile Strength at Break 47.0 MPa50mm/min; ISO 527-2/1A
 60.0 MPa5mm/min; ISO 527-2/1A
Tensile Strength, Yield 8000 psiASTM D638
Elongation at Break 2.0 %50mm/min; ISO 527-2/1A
 5.0 %5mm/min; ISO 527-2/1A
 5.0 %ASTM D638
Tensile Modulus 2600 MPa50mm/min; ISO 527-2/1A
Flexural Strength 80.0 MPaISO 178
 12000 psiASTM D790
Flexural Modulus 2200 MPaISO 178
 330000 psiASTM D790
Izod Impact, Notched 0.500 ft-lb/inASTM D256
Izod Impact, Notched (ISO) 3.10 kJ/m²ISO 180/1A
Charpy Impact Unnotched 38.0 kJ/m²ISO 179/1eU
 44.0 kJ/m²
@Temperature -30.0 °C		ISO 179/1eU
Charpy Impact, Notched 2.80 kJ/m²ISO 179/1eA
 2.10 kJ/m²
@Temperature -30.0 °C		ISO 179/1eA
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity >= 1.00e+15 ohm-cmIEC 60093
 1.00e+16 ohm-cmASTM D257
Surface Resistance >= 1.00e+15 ohmIEC 60093
Dielectric Constant 3.2
@Frequency 1e+6 Hz		ASTM D150
 3.2
@Frequency 1e+6 Hz		IEC 60250
 3.3
@Frequency 100 Hz		IEC 60250
Dielectric Strength 15.0 kV/mmIEC 60243-1
 400 V/milshort term; ASTM D149
Dissipation Factor 0.0010
@Frequency 1e+6 Hz		ASTM D150
 0.020
@Frequency 1e+6 Hz		IEC 60250
Comparative Tracking Index 350 VIEC 60112
 
Thermal PropertiesOriginal ValueComments
CTE, linear, Parallel to Flow 110 µm/m-°CISO 11359-2
CTE, linear, Transverse to Flow 100 µm/m-°CISO 11359-2
Melting Point 225 °C10°C/min; ISO 11357-1,-2,-3
 437 °FASTM D3418
Deflection Temperature at 0.46 MPa (66 psi) 155 °CISO 75-1, -2
 310 °FASTM D648
Deflection Temperature at 1.8 MPa (264 psi) 57.0 °CISO 75-1, -2
 130 °FASTM D648
Glass Transition Temp, Tg 60.0 °CISO 11357-1,-2,-3
Flammability, UL94 HB
 
Processing PropertiesOriginal ValueComments
Processing Temperature 65.0 - 93.0 °Ccavity
 250 - 260 °Chot runner
Feed Temperature 230 - 240 °C
Zone 1 230 - 240 °C
Zone 2 235 - 250 °C
Zone 3 235 - 250 °C
Zone 4 240 - 260 °C
Die Temperature 250 - 260 °C
Melt Temperature 243 °CISO 294
 235 - 260 °C
Mold Temperature 82.0 °CISO 294
Injection Velocity 300 mm/secISO 294
Drying Temperature 120 - 130 °C
Dry Time 4.00 hour
Moisture Content <= 0.020 %
Hold Pressure 48.0 MPaISO 294
 
Descriptive Properties
Injection moldingYes
Injection speedmedium-fast
Processing conditions acc. ISO7792-2

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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