Cosmic Plastics E484 Mineral/Glass Filled Epoxy Molding Compound

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Cosmic Plastics E484 Mineral/Glass Filled Epoxy Molding Compound
Categories:	Polymer; Thermoset; Epoxy; Epoxy, Molded, Glass Fiber Filler; Epoxy, Molded, Mineral Filled
Material Notes:	Description: Cosmic E484 is a mineral filled, glass reinforced, electrical grade epoxy molding compound which is supplied in a granular form. Features: It has excellent mechanical strength and electrical properties, especially at high temperatures. It has passed NASA out-gassing tests. Applications: Used in electrical hardware applications such as underwater connectors and other insulation applications. Information provided by Cosmic Plastics Inc
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Physical Properties	Metric	English	Comments

Specific Gravity	1.95 g/cc	1.95 g/cc
Bulk Factor	2.0 - 5.0	2.0 - 5.0
Water Absorption	0.25 % @Temperature 50.0 °C, Time 173000 sec	0.25 % @Temperature 122 °F, Time 48.0 hour
Linear Mold Shrinkage	0.0020 - 0.0040 cm/cm	0.0020 - 0.0040 in/in

Mechanical Properties	Metric	English	Comments
Hardness, Barcol	65 - 75	65 - 75
Tensile Strength at Break	96.5 MPa	14000 psi
Flexural Strength	131 MPa	19000 psi
Flexural Modulus	19.3 GPa	2800 ksi
Compressive Strength	207 MPa	30000 psi
Izod Impact, Notched	0.320 J/cm	0.600 ft-lb/in

Electrical Properties	Metric	English	Comments
Surface Resistance	>= 1.00e+15 ohm	>= 1.00e+15 ohm
Dielectric Constant	4.7 @Frequency 1e+6 Hz	4.7 @Frequency 1e+6 Hz	Wet
	5.4 @Frequency 1000 Hz	5.4 @Frequency 1000 Hz	Wet
Dielectric Strength	13.8 kV/mm	350 kV/in	Wet, step by step
Dielectric Breakdown	60 V	60 V	Wet, step by step
Dissipation Factor	0.0080 @Frequency 1e+6 Hz	0.0080 @Frequency 1e+6 Hz	Wet
	0.011 @Frequency 1000 Hz	0.011 @Frequency 1000 Hz	Wet
Arc Resistance	186 sec	186 sec

Thermal Properties	Metric	English	Comments
CTE, linear	29.3 µm/m-°C	16.3 µin/in-°F	Alpha 1
	92.0 µm/m-°C	51.1 µin/in-°F	Alpha 2
Thermal Conductivity	0.0418 W/m-K	0.290 BTU-in/hr-ft²-°F
Heat Distortion Temperature	260 °C	500 °F
Glass Transition Temp, Tg	165 °C	329 °F
Flammability, UL94	V-0 @Thickness 1.59 mm	V-0 @Thickness 0.0625 in

Processing Properties	Metric	English	Comments
Mold Temperature	150 - 180 °C	302 - 356 °F

Descriptive Properties
MIL-M-14	GEI-5		ASTM D5948-96
Molding Pressure	500-8000 psi

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