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Celanese Celanex® MT2008 PBT, Unfilled
Categories: Polymer; Thermoplastic; Polyester, TP; Polybutylene Terephthalate (PBT)
Material Notes: Celanex MT2008 is a medical grade 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 PropertiesMetricEnglishComments
Specific Gravity 1.31 g/cc1.31 g/ccASTM D792
Density 1.31 g/cc0.0473 lb/in³ISO 1183
Water Absorption 0.090 %
@Temperature 22.8 °C		0.090 %
@Temperature 73.0 °F		24hr immersion; ASTM D570
Linear Mold Shrinkage, Flow 0.018 - 0.020 cm/cm0.018 - 0.020 in/inASTM D955
 0.018 - 0.020 cm/cm0.018 - 0.020 in/inISO 294-4
 
Mechanical PropertiesMetricEnglishComments
Hardness, Rockwell M 7272ISO 2039-2
Tensile Strength at Break 60.0 MPa8700 psi5mm/min; ISO 527-2/1A
Tensile Strength, Yield 55.2 MPa8000 psiASTM D638
Elongation at Break 5.0 %5.0 %5mm/min; ISO 527-2/1A
 5.0 %5.0 %ASTM D638
Flexural Strength 80.0 MPa11600 psiISO 178
 82.7 MPa12000 psiASTM D790
Flexural Modulus 2.20 GPa319 ksiISO 178
 2.28 GPa330 ksiASTM D790
Izod Impact, Notched 0.267 J/cm0.500 ft-lb/inASTM D256
Izod Impact, Notched (ISO) 3.10 kJ/m²1.48 ft-lb/in²ISO 180/1A
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity >= 1.00e+15 ohm-cm>= 1.00e+15 ohm-cmIEC 60093
 1.00e+16 ohm-cm1.00e+16 ohm-cmASTM D257
Surface Resistance >= 1.00e+15 ohm>= 1.00e+15 ohmIEC 60093
Dielectric Constant  3.2
@Frequency 1e+6 Hz		3.2
@Frequency 1e+6 Hz		ASTM D150
 3.2
@Frequency 1e+6 Hz		3.2
@Frequency 1e+6 Hz		IEC 60250
Dielectric Strength 15.0 kV/mm381 kV/inIEC 60243-1
 15.7 kV/mm400 kV/inshort term; ASTM D149
Dissipation Factor  0.0010
@Frequency 1e+6 Hz		0.0010
@Frequency 1e+6 Hz		ASTM D150
 0.020
@Frequency 1e+6 Hz		0.020
@Frequency 1e+6 Hz		IEC 60250
 
Thermal PropertiesMetricEnglishComments
Melting Point 225 °C437 °F10°C/min; ISO 11357-1,-2,-3
 225 °C437 °FASTM D3418
Deflection Temperature at 0.46 MPa (66 psi) 154 °C310 °FASTM D648
 155 °C311 °FISO 75-1, -2
Deflection Temperature at 1.8 MPa (264 psi) 54.4 °C130 °FASTM D648
 57.0 °C135 °FISO 75-1, -2
Glass Transition Temp, Tg 60.0 °C140 °FISO 11357-1,-2,-3
Flammability, UL94 HBHB
 
Processing PropertiesMetricEnglishComments
Processing Temperature 65.0 - 93.0 °C149 - 199 °Fcavity
 250 - 260 °C482 - 500 °Fhot runner
Feed Temperature 230 - 240 °C446 - 464 °F
Zone 1 230 - 240 °C446 - 464 °F
Zone 2 235 - 250 °C455 - 482 °F
Zone 3 235 - 250 °C455 - 482 °F
Zone 4 240 - 260 °C464 - 500 °F
Die Temperature 250 - 260 °C482 - 500 °F
Melt Temperature 243 °C469 °FISO 294
 235 - 260 °C455 - 500 °F
Mold Temperature 82.0 °C180 °FISO 294
Injection Velocity 300 mm/sec11.8 in/secISO 294
Drying Temperature 120 - 130 °C248 - 266 °F
Dry Time 4.00 hour4.00 hour
Moisture Content <= 0.020 %<= 0.020 %
Hold Pressure 48.0 MPa6960 psiISO 294
 
Descriptive Properties
Injection moldingYes
Injection speedmedium-fast
Processing conditions acc. ISO7792-2

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PHCQ093 / 178548

Specialty Compounds RTP Company




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