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	Original Value	Comments

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

Mechanical Properties	Original Value	Comments
Hardness, Barcol	40 - 50
Tensile Strength, Ultimate	7000 - 9000 psi
Tensile Modulus	1.90e+6 - 2.10e+6 psi
Flexural Strength	17000 - 20000 psi
Flexural Modulus	1600 - 1800 ksi
Compressive Strength	19000 - 21000 psi
Poissons Ratio	0.36 - 0.39
Izod Impact, Notched	7.00 - 10.0 ft-lb/in
Dynatup @ -18°C	9.00 - 10.5 ft-lb @Thickness 3.17 mm
Dynatup @ -18°C Max Load	360 - 390 lb

Thermal Properties	Original Value	Comments
CTE, linear	38.0 - 42.0 µm/m-°C @Temperature 20.0 - 125 °C
Deflection Temperature at 1.8 MPa (264 psi)	>= 500 °F
Glass Transition Temp, Tg	155 - 165 °C
Flammability, UL94	V-0 @Thickness 3.17 mm

Processing Properties	Original Value	Comments
Mold Temperature	280 - 330 °F

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PBMC036 / 27219

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