A. Schulman BMC 1901 Mineral Filled Alkyd

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A. Schulman BMC 1901 Mineral Filled Alkyd
Categories:	Polymer; Thermoset; Filled/Reinforced Thermoset; Polyester, TS; Alkyd (Polyester), Molded, Mineral Filler
Material Notes:	BMC 1901 molding compound is a mineral filled, glass-fiber-reinforced alkyd compound suitable for compression transfer molding. It is a general purpose with medium impact strength and good overall electrical properties. Typical applications include switch components, relay bases, stack insulator s and as a formable insulating putty for motor construction and repair.
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Physical Properties	Metric	English	Comments

Specific Gravity	2.21 g/cc	2.21 g/cc
Water Absorption	0.28 %	0.28 %	24 hours, 23°C
Linear Mold Shrinkage	0.0030 - 0.0060 cm/cm	0.0030 - 0.0060 in/in

Mechanical Properties	Metric	English	Comments
Hardness, Barcol	60 - 80	60 - 80
Flexural Strength	103 - 138 MPa	15000 - 20000 psi
Compressive Strength	152 - 179 MPa	22000 - 26000 psi
Izod Impact, Notched	1.07 - 2.14 J/cm	2.00 - 4.00 ft-lb/in

Electrical Properties	Metric	English	Comments
Dielectric Constant	7.3 @Frequency 60 Hz	7.3 @Frequency 60 Hz
Dielectric Strength	12.8 kV/mm	325 kV/in	Short Time
Dissipation Factor	0.40 @Frequency 60 Hz	0.40 @Frequency 60 Hz
Arc Resistance	>= 180 sec	>= 180 sec
Comparative Tracking Index	>= 600 V	>= 600 V

Thermal Properties	Metric	English	Comments
Deflection Temperature at 1.8 MPa (264 psi)	>= 260 °C	>= 500 °F
Flammability, UL94	HB @Thickness 6.35 mm	HB @Thickness 0.250 in
	HB @Thickness 3.17 mm	HB @Thickness 0.125 in
	HB @Thickness 1.59 mm	HB @Thickness 0.0625 in

Processing Properties	Metric	English	Comments
Mold Temperature	138 - 166 °C	280 - 330 °F

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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PBMC056 / 27239

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