Bakelite® EP 8412 Epoxy Resin, High Arc Resistance, Improved Electrical Properties, Low Shrinkage

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Bakelite® EP 8412 Epoxy Resin, High Arc Resistance, Improved Electrical Properties, Low Shrinkage
Categories:	Polymer; Thermoset; Epoxy; Epoxy Molding Compound; Filled/Reinforced Thermoset
Material Notes:	Epoxy molding compound, inorganically filled, glass fiber reinforced, heat resistant, dimensionally stable, good electric and mechanical properties, very good chemical resistance, low viscosity, UL listed (RTI 155°C). Applications: Encapsulation of electric parts, e. g. electromagnetic coil
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Physical Properties	Metric	English	Comments

Density	1.89 g/cc	0.0683 lb/in³	ISO 1183
Apparent Bulk Density	0.850 g/cc	0.0307 lb/in³	ISO 60
Linear Mold Shrinkage	0.0025 cm/cm	0.0025 in/in	Compression Molding. Post Shrinkage = 0.01%.; ISO 2577
	0.0030 cm/cm	0.0030 in/in	Injection Molding. Post Shrinkage = 0.02%.; ISO 2577

Mechanical Properties	Metric	English	Comments
Ball Indentation Hardness	400 MPa	58000 psi	H961/30; ISO 2039/P1
Tensile Strength	55.0 MPa	7980 psi	ISO 527 - 1/2
Tensile Modulus	13.0 GPa	1890 ksi	ISO 527 - 1/2
Flexural Strength	125 MPa	18100 psi	ISO 178
Flexural Modulus	15.5 GPa	2250 ksi	ISO 178
Compressive Strength	170 MPa	24700 psi	ISO 604
Charpy Impact Unnotched	0.850 J/cm²	4.04 ft-lb/in²	ISO 179-1 eU
Charpy Impact, Notched	0.400 J/cm²	1.90 ft-lb/in²	ISO 179-1eA

Electrical Properties	Metric	English	Comments
Volume Resistivity	1.00e+13 ohm-cm	1.00e+13 ohm-cm
Surface Resistance	1.00e+12 ohm	1.00e+12 ohm
Dielectric Constant	5.5 @Frequency 100 Hz	5.5 @Frequency 100 Hz
Dielectric Strength	30.0 kV/mm @Thickness 1.00 mm	762 kV/in @Thickness 0.0394 in	IEC 60243-P1
Dissipation Factor	0.020 @Frequency 100 Hz	0.020 @Frequency 100 Hz
Arc Resistance	192 - 194 sec	192 - 194 sec	ASTM D495
High Voltage Arc Resistance to Ignition (HVAR)	>= 300 sec @Thickness 1.50 mm	>= 300 sec @Thickness 0.0591 in	BK
Comparative Tracking Index	250 V	250 V	IEC 6011
Hot Wire Ignition, HWI	60 - 120 sec @Thickness 1.50 mm	60 - 120 sec @Thickness 0.0591 in	BK
	>= 120 sec @Thickness 3.00 mm	>= 120 sec @Thickness 0.118 in	BK
High Amp Arc Ignition, HAI	15 - 30 arcs @Thickness 1.50 mm	15 - 30 arcs @Thickness 0.0591 in	BK
	60 - 120 arcs @Thickness 3.00 mm	60 - 120 arcs @Thickness 0.118 in	BK
High Voltage Arc-Tracking Rate, HVTR	0.000 - 10.0 mm/min @Thickness 3.00 mm	0.000 - 0.394 in/min @Thickness 0.118 in	BK

Thermal Properties	Metric	English	Comments
Maximum Service Temperature, Air	180 °C	356 °F	<20000 hours; IEC 60216-P1
	220 °C	428 °F	< 50 hours; IEC 60216-P1
Deflection Temperature at 8.0 MPa	120 °C	248 °F	ISO 75-2
UL RTI, Electrical	155 °C @Thickness 1.50 mm	311 °F @Thickness 0.0591 in	BK
UL RTI, Mechanical with Impact	155 °C @Thickness 1.50 mm	311 °F @Thickness 0.0591 in	BK
UL RTI, Mechanical without Impact	155 °C @Thickness 1.50 mm	311 °F @Thickness 0.0591 in	BK
Flammability, UL94	HB @Thickness 1.50 mm	HB @Thickness 0.0591 in	BK

Processing Properties	Metric	English	Comments
Feed Temperature	60.0 - 75.0 °C	140 - 167 °F	Injection molding
Nozzle Temperature	70.0 - 100 °C	158 - 212 °F	Injection molding
Melt Temperature	90.0 - 100 °C	194 - 212 °F	Injection molding
Mold Temperature	160 - 190 °C	320 - 374 °F	Compression molding
	170 - 190 °C	338 - 374 °F	Injection molding
Injection Pressure	>= 10.0 MPa	>= 1450 psi	Compression and injection cavity mold pressure
Back Pressure	0.500 - 2.00 MPa	72.5 - 290 psi	Injection molding
Cure Time	0.250 - 0.417 min	0.00417 - 0.00694 hour	Per 1 mm of wall thickness, injection molding
	0.500 - 1.00 min	0.00833 - 0.0167 hour	Per 1 mm of wall thickness, compression molding

Descriptive Properties
Chromatic Spectrum	Subdued Colors
Creep Rupture Strength	Very Good
Holding Pressure	Approximately 40-60% of injection pressure
Media Resistance	Very Good
Thermal Expansion	Very Slight
Water absorption (mg)	6		24h / 23°C

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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