A. Schulman BMC 304 Automotive Grade Molding Compound

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A. Schulman BMC 304 Automotive Grade Molding Compound
Categories:	Polymer; Thermoset; Polyester, TS; Thermoset Polyester Glass Filled BMC
Material Notes:	BMC 304 is a low profile, automotive grade molding compound that is suitable for Injection, Compression or Transfer molding operations. BMC 304 can be coated using traditional or electrostatic coating systems and demonstrates excellent adhesion characteristics. BMC 304 can be supplied in logs, slugs or bulk form. Typical applications include Automotive Headlamp and Foglamp Reflectors, and Automotive Body Panels.
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Physical Properties	Metric	English	Comments

Specific Gravity	1.75 - 2.05 g/cc	1.75 - 2.05 g/cc
Filler Content	10 - 25 %	10 - 25 %
Water Absorption	0.10 - 0.30 %	0.10 - 0.30 %	24 hours, 23°C
Linear Mold Shrinkage	0.00 - 0.0010 cm/cm	0.00 - 0.0010 in/in

Mechanical Properties	Metric	English	Comments
Hardness, Barcol	40 - 60	40 - 60
Tensile Strength, Ultimate	34.5 - 62.1 MPa	5000 - 9000 psi
Flexural Strength	68.9 - 152 MPa	10000 - 22000 psi
Flexural Modulus	10.3 - 15.2 GPa	1500 - 2200 ksi
Compressive Strength	110 - 152 MPa	16000 - 22000 psi
Izod Impact, Notched	1.07 - 4.81 J/cm	2.00 - 9.00 ft-lb/in

Thermal Properties	Metric	English	Comments
Deflection Temperature at 1.8 MPa (264 psi)	218 - 260 °C	425 - 500 °F
Flammability, UL94	HB	HB

Processing Properties	Metric	English	Comments
Mold Temperature	149 - 177 °C	300 - 350 °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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PBMC004 / 27187

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