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Elmet Technologies

A. Schulman tetra-DUR F 4308 Bulk Molding Compound
Categories: Polymer; Thermoset; Polyester, TS; Polyester (Thermoset) - Rigid

Material Notes: UL-licensed

Typical Applications - Requiring mechanical strength, abrasion resistance, dimensional stability, electrical insulation, electrostatic dissipation (explosion protection), thermal stability, color retention, chemical stability, zero shrink/class-A-surface, and uniform color.

Information provided by Bulk Molding Compounds, Inc.

Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesMetricEnglishComments
Density 1.60 - 1.80 g/cc0.0578 - 0.0650 lb/in³ISO 1138
Linear Mold Shrinkage 0.00 - 0.0020 cm/cm0.00 - 0.0020 in/inprocessing; ISO 2577
 
Mechanical PropertiesMetricEnglishComments
Tensile Strength 40.0 - 50.0 MPa5800 - 7250 psiISO 527
Flexural Strength 100 - 140 MPa14500 - 20300 psiISO 178
Flexural Modulus 8.00 - 12.0 GPa1160 - 1740 ksiISO 178
Compressive Strength 140 - 160 MPa20300 - 23200 psiISO 604
Charpy Impact Unnotched 2.00 - 4.50 J/cm²9.52 - 21.4 ft-lb/in²ISO 179
Charpy Impact, Notched 2.00 - 4.50 J/cm²9.52 - 21.4 ft-lb/in²ISO 179
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity 1.00e+14 ohm-cm1.00e+14 ohm-cmIEC 60093
Surface Resistance 1.00e+13 ohm1.00e+13 ohmIEC 60093
Dielectric Constant 4.5
@Frequency 100 Hz
4.5
@Frequency 100 Hz
IEC 60250
Dielectric Strength 29.0 kV/mm
@Thickness 1.00 mm
737 kV/in
@Thickness 0.0394 in
IEC 60243
Dielectric Loss Index <= 0.030
@Frequency 100 Hz
<= 0.030
@Frequency 100 Hz
IEC 60250
Arc Resistance 190 sec190 secASTM D495-61
Comparative Tracking Index >= 600 V>= 600 VIEC 60112
 
Thermal PropertiesMetricEnglishComments
CTE, linear 20.0 - 30.0 µm/m-°C11.1 - 16.7 µin/in-°FVDE 0304T1
Deflection Temperature at 1.8 MPa (264 psi) >= 240 °C>= 464 °FISO 75
Flammability, UL94 V-0V-0
Shrinkage 0.00 - 0.050 %0.00 - 0.050 %post molding; ISO 2577
 
Descriptive Properties
Water Absorption>40 mg/1dISO 62

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