A. Schulman BMC T40(18)-LS Die Casting Replacement Grade Molding Compound

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A. Schulman BMC T40(18)-LS Die Casting Replacement Grade Molding Compound
Categories:	Polymer; Thermoset; Polyester, TS; Polyester (Thermoset) - Rigid
Material Notes:	BMC T40(18)-LS is a low shrink compound designed as a direct replacement for aluminum die casting applications. T40(18)-LS is UL recognized. Excellent mechanical properties and dimensional stability allow molded parts to maintain machined tolerances. Typical applications are phase-barriers, fractional H.P. motor end bases and electrical parts. Information provided by Bulk Molding Compounds, Inc.
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Physical Properties	Original Value	Comments

Density	1.72 - 1.92 g/cc	Molded
Linear Mold Shrinkage	0.0010 - 0.0020 in/in

Mechanical Properties	Original Value	Comments
Hardness, Barcol	20 - 25
Tensile Strength	9000 - 11000 psi
Flexural Strength	26500 - 30500 psi
Flexural Modulus	2100 - 2300 ksi
Compressive Strength	18700 - 22000 psi
Izod Impact, Notched	7.00 - 9.00 ft-lb/in

Electrical Properties	Original Value	Comments
Dielectric Strength	363 - 413 V/mil	short time
Arc Resistance	>= 190 sec
Comparative Tracking Index	>= 500 V

Thermal Properties	Original Value	Comments
Deflection Temperature at 1.8 MPa (264 psi)	>= 500 °F
Flammability, UL94	5VA

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

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PBMC940 / 123404

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