Category: | Epoxy , Epoxy; Epoxide |
Manufacturer: | Sumitomo Bakelite North America, Inc. |
Trademark: | Sumitomo Epoxy |
Fillers: | - |
Ports: | Qinzhou, Shekou, Shanghai, Ningbo |
Delivery Terms | FOB, CIF, DAP, DAT, DDP |
PDF: | PyYUgQ_Sumitomo-Epoxy-E-3938A.pdf ![]() |
PRICE: | Order Products email sales@su-jiao.com |
Message |
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E 3938A is a fiberglass reinforced epoxy molding compound, with excellent dimensional stability, good strength, and excellent electrical insulation properties. |
General Information | |
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Filler / Reinforcement |
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Features |
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Appearance |
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Forms |
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Processing Method |
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Physical | Nominal Value | Unit | Test Method |
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Specific Gravity | 1.90 | g/cm³ | ASTM D792 |
Apparent Density | 0.75 | g/cm³ | ASTM D1895 |
Molding Shrinkage - Flow | 0.10 | % | ASTM D955 |
Water Absorption - 48 hr (50°C) | 0.20 | % | ASTM D570 |
Mechanical | Nominal Value | Unit | Test Method |
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Tensile Strength (Break) | 85.0 | MPa | ASTM D638 |
Flexural Strength (Break) | 160 | MPa | ASTM D790 |
Compressive Strength | 250 | MPa | ASTM D695 |
Impact | Nominal Value | Unit | Test Method |
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Notched Izod Impact | 27 | J/m | ASTM D256 |
Thermal | Nominal Value | Unit | Test Method |
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Deflection Temperature Under Load | ASTM D648 | ||
1.8 MPa, Unannealed | 215 | °C | |
1.8 MPa, Annealed | > 282 | °C | |
CLTE | ASTM E831 | ||
Flow | 1.9E-5 | cm/cm/°C | |
Transverse | 2.8E-5 | cm/cm/°C |
Electrical | Nominal Value | Unit | Test Method |
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Dielectric Strength | 16 | kV/mm | ASTM D149 |
Dielectric Constant 1(1 MHz) | 4.10 | ASTM D150 | |
Dissipation Factor 2(1 MHz) | 0.010 | ASTM D150 | |
Arc Resistance | 186 | sec | ASTM D495 |
Note Message | |
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1 . | Wet |
2 . | Wet |
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