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Specialty Compounds RTP Company

Techmer ES Electrafil® PS-31/EC BK Polystyrene, Electrically Conductive Carbon Black
Categories: Polymer; Thermoplastic; Polystyrene (PS); Polystyrene, Carbon Black Filled

Material Notes:

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Physical PropertiesMetricEnglishComments
Density 1.07 g/cc0.0387 lb/in³ASTM D792
Linear Mold Shrinkage 0.0050 cm/cm
@Thickness 3.17 mm
0.0050 in/in
@Thickness 0.125 in
ASTM D955
Melt Flow 7.0 g/10 min
@Load 5.00 kg,
Temperature 200 °C
7.0 g/10 min
@Load 11.0 lb,
Temperature 392 °F
ASTM D1238
 
Mechanical PropertiesMetricEnglishComments
Tensile Strength, Ultimate 24.1 MPa3500 psiASTM D638
Elongation at Break 15 %15 %ASTM D638
Flexural Strength 29.0 MPa4200 psiASTM D790
Flexural Modulus 1.72 GPa250 ksiASTM D790
Izod Impact, Notched 2.67 J/cm
@Thickness 3.17 mm
5.00 ft-lb/in
@Thickness 0.125 in
ASTM D256
 
Electrical PropertiesMetricEnglishComments
Surface Resistance 1000 - 10000 ohm1000 - 10000 ohmASTM D4496
 
Thermal PropertiesMetricEnglishComments
Deflection Temperature at 1.8 MPa (264 psi) 71.1 °C160 °FASTM D648
 
Processing PropertiesMetricEnglishComments
Rear Barrel Temperature 221 - 232 °C430 - 450 °F
Middle Barrel Temperature 227 - 243 °C440 - 470 °F
Front Barrel Temperature 221 - 238 °C430 - 460 °F
Nozzle Temperature 216 - 232 °C420 - 450 °F
Melt Temperature 232 - 243 °C450 - 470 °F
Mold Temperature 48.9 - 65.6 °C120 - 150 °FUse well vented mold
Drying Temperature 71.1 °C160 °FASTM D648
Dry Time 2 - 4 hour2 - 4 hour
Moisture Content <= 0.020 %<= 0.020 %
Back Pressure 0.172 - 0.345 MPa25.0 - 50.0 psiMedium Injection Speed
Screw Speed 60 - 100 rpm60 - 100 rpm

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 view all the property values for this datasheet as they were originally entered into MatWeb.

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PTLCOM022 / 70586

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