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Sumitomo Bakelite North America E 8398 Hardware Grade Epoxy

Category Polymer , Thermoset , Epoxy , Filled/Reinforced Thermoset
Manufacturer Sumitomo Bakelite North America
Trade Name
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Sumitomo Bakelite North America E 8398 Hardware Grade Epoxy.pdf
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Material Notes:
Fiberglass and mineral reinforced epoxy molding compound with excellent dimensional stability, good electrical insulation properties, and good strength.Information provided by Vyncolit, a Sumitomo Bak Group
Physical Properties Metric English Comments
Bulk Density 0.900 g/cc
0.0325 lb/in³
Powder Density; ASTM D1895
Density 1.98 g/cc
0.0715 lb/in³
Relative Density; ASTM D792
Linear Mold Shrinkage 0.0050 cm/cm
0.0050 in/in
Compression Molding; ASTM D955
Mechanical Properties Metric English Comments
Tensile Strength at Break 76.0 MPa
11000 psi
ASTM D638
Flexural Strength 140 MPa
20300 psi
At Rupture; ASTM D790
Flexural Modulus 17.0 GPa
2470 ksi
ASTM D790
Compressive Strength 280 MPa
40600 psi
ASTM D695
Izod Impact, Notched 0.190 J/cm
0.356 ft-lb/in
ASTM D256
Thermal Properties Metric English Comments
CTE, linear, Parallel to Flow 24.0 µm/m-°C

@Temperature 20.0 °C
13.3 µin/in-°F

@Temperature 68.0 °F
ASTM E-831
Thermal Conductivity 0.840 W/m-K
5.83 BTU-in/hr-ft²-°F
ASTM C-518
Deflection Temperature at 1.8 MPa (264 psi) 220 °C
428 °F
As molded; ASTM D648A
>= 282 °C
>= 540 °F
Post Baked; ASTM D648A
Electrical Properties Metric English Comments
Dielectric Constant 3.9

@Frequency 1e+6 Hz
3.9

@Frequency 1e+6 Hz
Wet; ASTM D150
Dielectric Strength 15.4 kV/mm
391 kV/in
60Hz, Step-by-Step, wet; ASTM D149
16.2 kV/mm
411 kV/in
60Hz, Step-by-Step, dry; ASTM D149
21.1 kV/mm
536 kV/in
60Hz, Short Time, wet; ASTM D149
22.0 kV/mm
559 kV/in
60Hz, Short Time, dry; ASTM D149
Dissipation Factor 0.014

@Frequency 1e+6 Hz
0.014

@Frequency 1e+6 Hz
wet; ASTM D150
Arc Resistance 180 sec
180 sec
ASTM D495
Descriptive Properties Value Comments
Color Black
Form Granular
Main Filler Glass Fiber & Mineral
Molding Method Compression, transfer
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