A. Schulman BMC 851 Corrosion Resistant, Flame Retardant Molding Compound

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A. Schulman BMC 851 Corrosion Resistant, Flame Retardant Molding Compound
Categories:	Polymer; Thermoset; Polyester, TS; Thermoset Polyester Glass and Mineral Filled BMC
Material Notes:	BMC 851is a high strength, corrosion resistant and flame retardant molding compound. As with all other BMCI compounds, this Series can be supplied in logs, slugs or bulk form. Typical applications are small engine valve covers and structural components.
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Physical Properties	Metric	English	Comments

Specific Gravity	1.75 - 1.90 g/cc	1.75 - 1.90 g/cc
Water Absorption	0.14 - 0.20 %	0.14 - 0.20 %	24 hours, 23°C
Linear Mold Shrinkage	0.0015 - 0.0035 cm/cm	0.0015 - 0.0035 in/in

Mechanical Properties	Metric	English	Comments
Hardness, Barcol	40 - 50	40 - 50
Tensile Strength, Ultimate	48.3 - 62.1 MPa	7000 - 9000 psi
Tensile Modulus	13.1 - 14.5 GPa	1900 - 2100 ksi
Flexural Strength	117 - 138 MPa	17000 - 20000 psi
Flexural Modulus	11.0 - 12.4 GPa	1600 - 1800 ksi
Compressive Strength	131 - 145 MPa	19000 - 21000 psi
Poissons Ratio	0.36 - 0.39	0.36 - 0.39
Izod Impact, Notched	3.74 - 5.34 J/cm	7.00 - 10.0 ft-lb/in
Dynatup @ -18°C	12.2 - 14.2 J @Thickness 3.17 mm	9.00 - 10.5 ft-lb @Thickness 0.125 in
Dynatup @ -18°C Max Load	163000 - 177000 g	360 - 390 lb

Thermal Properties	Metric	English	Comments
CTE, linear	38.0 - 42.0 µm/m-°C @Temperature 20.0 - 125 °C	21.1 - 23.3 µin/in-°F @Temperature 68.0 - 257 °F
Deflection Temperature at 1.8 MPa (264 psi)	>= 260 °C	>= 500 °F
Glass Transition Temp, Tg	155 - 165 °C	311 - 329 °F
Flammability, UL94	V-0 @Thickness 3.17 mm	V-0 @Thickness 0.125 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.

PBMC036 / 27219

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