A. Schulman BMC 620M Mineral Filled, Glass Fiber Reinforced Polyester Compound

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A. Schulman BMC 620M Mineral Filled, Glass Fiber Reinforced Polyester Compound
Categories:	Polymer; Thermoset; Filled/Reinforced Thermoset; Polyester, TS; Thermoset Polyester Glass and Mineral Filled BMC
Material Notes:	BMC 620M molding compound is a mineral filled, glass fiber-reinforced polyester compound suitable for compression, and stuffer injection molding It is characterized by high impact strength, good moldability excellent overall electrical properties and flame resistance. Typical applications include phase separators circuit breaker housings, and applications requiring the properties of Military specification Mil-M-14G Type MAI-60.
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Physical Properties	Metric	English	Comments

Specific Gravity	1.86 g/cc	1.86 g/cc
Water Absorption	0.13 %	0.13 %	24 hours, 23°C
Linear Mold Shrinkage	0.0015 - 0.0025 cm/cm	0.0015 - 0.0025 in/in

Mechanical Properties	Metric	English	Comments
Hardness, Barcol	30 - 40	30 - 40
Tensile Strength, Ultimate	55.2 - 68.9 MPa	8000 - 10000 psi
Flexural Strength	138 - 165 MPa	20000 - 24000 psi
Compressive Strength	165 - 193 MPa	24000 - 28000 psi
Izod Impact, Notched	4.81 - 5.87 J/cm	9.00 - 11.0 ft-lb/in

Electrical Properties	Metric	English	Comments
Dielectric Constant	5.2 @Frequency 60 Hz	5.2 @Frequency 60 Hz
Dielectric Strength	14.2 kV/mm	360 kV/in	Short Time
Dissipation Factor	0.020 @Frequency 60 Hz	0.020 @Frequency 60 Hz
Arc Resistance	185 sec	185 sec
Comparative Tracking Index	>= 500 V	>= 500 V

Thermal Properties	Metric	English	Comments
Deflection Temperature at 1.8 MPa (264 psi)	>= 260 °C	>= 500 °F
Flammability, UL94	V-0 @Thickness 6.35 mm	V-0 @Thickness 0.250 in
	V-0 @Thickness 3.17 mm	V-0 @Thickness 0.125 in
	V-0 @Thickness 1.59 mm	V-0 @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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PBMC023 / 27206

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