Bakelite® PF 2874 Phenolic Formaldehyde Resin, Low Shrinkage, Improved Electrical Properties, UL Listed, High Mechanical Strength

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Bakelite® PF 2874 Phenolic Formaldehyde Resin, Low Shrinkage, Improved Electrical Properties, UL Listed, High Mechanical Strength
Categories:	Polymer; Thermoset; Filled/Reinforced Thermoset; Phenolic
Material Notes:	Phenolic molding compound, inorganically filled, glass fiber reinforced, increased mechanical strength, increased temperature stability, low water absorption, good dimensional stability, UL listed molding compound 0.75 mm / V-0 (BK). Applications: Solenoid switch caps, insulating flanges, automotive engine parts, steering housings, electric motor parts, carbon brush holders, medium strength and heat resistant cookware fittings.
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Physical Properties	Metric	English	Comments

Density	1.57 g/cc	0.0567 lb/in³	ISO 1183
Apparent Bulk Density	0.700 g/cc	0.0253 lb/in³	ISO 60
Linear Mold Shrinkage	0.0025 cm/cm	0.0025 in/in	Compression Molding. Post Shrinkage = 0.2%.; ISO 2577
	0.0050 cm/cm	0.0050 in/in	Injection Molding. Post Shrinkage = 0.25%.; ISO 2577

Mechanical Properties	Metric	English	Comments
Ball Indentation Hardness	350 MPa	50800 psi	H961/30; ISO 2039/P1
Tensile Strength	65.0 MPa	9430 psi	ISO 527 - 1/2
Tensile Modulus	10.5 GPa	1520 ksi	ISO 527 - 1/2
Flexural Strength	125 MPa	18100 psi	ISO 178
Flexural Modulus	11.0 GPa	1600 ksi	ISO 178
Compressive Strength	220 MPa	31900 psi	ISO 604
Charpy Impact Unnotched	0.950 J/cm²	4.52 ft-lb/in²	ISO 179-1 eU
Charpy Impact, Notched	0.220 J/cm²	1.05 ft-lb/in²	ISO 179-1eA

Electrical Properties	Metric	English	Comments
Volume Resistivity	1.00e+12 ohm-cm	1.00e+12 ohm-cm
Surface Resistance	1.00e+11 ohm	1.00e+11 ohm
Dielectric Constant	9.0 @Frequency 100 Hz	9.0 @Frequency 100 Hz
Dielectric Strength	25.0 kV/mm @Thickness 1.00 mm	635 kV/in @Thickness 0.0394 in	IEC 60243-P1
Dissipation Factor	0.25 @Frequency 100 Hz	0.25 @Frequency 100 Hz
Arc Resistance	130 - 135 sec	130 - 135 sec	ASTM D495
Comparative Tracking Index	175 V	175 V
Hot Wire Ignition, HWI	>= 120 sec @Thickness 0.750 mm	>= 120 sec @Thickness 0.0295 in	BK
High Amp Arc Ignition, HAI	>= 120 arcs @Thickness 0.750 mm	>= 120 arcs @Thickness 0.0295 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	170 °C	338 °F	<20000 hours; IEC 60216-P1
	230 °C	446 °F	< 50 hours; IEC 60216-P1
Deflection Temperature at 8.0 MPa	155 °C	311 °F	ISO 75-2
UL RTI, Electrical	150 °C @Thickness 0.750 mm	302 °F @Thickness 0.0295 in	BK
UL RTI, Mechanical with Impact	150 °C @Thickness 0.750 mm	302 °F @Thickness 0.0295 in	BK
UL RTI, Mechanical without Impact	150 °C @Thickness 0.750 mm	302 °F @Thickness 0.0295 in	BK
Flammability, UL94	V-0 @Thickness 0.750 mm	V-0 @Thickness 0.0295 in	BK

Processing Properties	Metric	English	Comments
Feed Temperature	60.0 - 75.0 °C	140 - 167 °F	Injection molding
Nozzle Temperature	80.0 - 100 °C	176 - 212 °F	Injection molding
Melt Temperature	80.0 - 100 °C	176 - 212 °F	Injection molding
Mold Temperature	160 - 190 °C	320 - 374 °F	Injection molding
	160 - 190 °C	320 - 374 °F	Compression molding
Injection Pressure	>= 15.0 MPa	>= 2180 psi	Compression and injection cavity mold pressure
Back Pressure	0.500 - 2.00 MPa	72.5 - 290 psi	Injection molding
Cure Time	0.167 - 0.333 min	0.00278 - 0.00556 hour	Per 1 mm of wall thickness, injection molding
	0.333 - 0.667 min	0.00556 - 0.0111 hour	Per 1 mm of wall thickness, compression molding

Descriptive Properties
Chromatic Spectrum	All 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)	30		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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