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Ensinger PEI

Unitika L-8005
Categories: Polymer; Thermoplastic; Polyarylate

Material Notes: Chemical resistance, and excellent lubricant property

Information provided by Unitika Ltd.

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Physical PropertiesMetricEnglishComments
Density 1.29 g/cc0.0466 lb/in³ASTM D792
Water Absorption 0.15 %
@Thickness 3.17 mm,
Time 86400 sec
0.15 %
@Thickness 0.125 in,
Time 24.0 hour
ASTM D570
Linear Mold Shrinkage, Flow 0.0080 cm/cm
@Thickness 3.00 mm
0.0080 in/in
@Thickness 0.118 in
 
Mechanical PropertiesMetricEnglishComments
Hardness, Rockwell R 125125ASTM D785
Tensile Strength at Break 64.0 MPa9280 psiASTM D638
Elongation at Break 85 %85 %ASTM D638
Flexural Strength 99.0 MPa14400 psiASTM D790
Flexural Modulus 2.50 GPa363 ksiASTM D790
Izod Impact, Notched 0.780 J/cm
@Thickness 3.17 mm
1.46 ft-lb/in
@Thickness 0.125 in
ASTM D256
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity 2.00e+14 ohm-cm2.00e+14 ohm-cmASTM D257
Dielectric Constant 3.0
@Frequency 1e+6 Hz
3.0
@Frequency 1e+6 Hz
ASTM D150
Dielectric Strength 40.2 kV/mm1020 kV/inASTM D149
Dissipation Factor 0.015
@Frequency 1e+6 Hz
0.015
@Frequency 1e+6 Hz
ASTM D150
Arc Resistance 120 sec120 secASTM D495
 
Thermal PropertiesMetricEnglishComments
CTE, linear 62.0 µm/m-°C34.4 µin/in-°FASTM D696
Deflection Temperature at 1.8 MPa (264 psi) 110 °C230 °FASTM D648
 
Processing PropertiesMetricEnglishComments
Rear Barrel Temperature 250 - 270 °C482 - 518 °F
Middle Barrel Temperature 260 - 280 °C500 - 536 °F
Front Barrel Temperature 270 - 290 °C518 - 554 °F
Nozzle Temperature 270 - 290 °C518 - 554 °F
Mold Temperature 70.0 - 90.0 °C158 - 194 °Factual surface temp
Drying Temperature 110 °C230 °F
Dry Time 10.0 - 24.0 hour10.0 - 24.0 hour
Back Pressure 0.490 - 1.47 MPa71.1 - 213 psigage pressure

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