A. Schulman BMC 5592 Arc, Track, and Weather Resistant Polyester

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A. Schulman BMC 5592 Arc, Track, and Weather Resistant Polyester
Categories:	Polymer; Thermoset; Polyester, TS; Thermoset Polyester Glass and Mineral Filled BMC
Material Notes:	BMC 5592 molding compound is an arc, track and weather resistant grade polyester compound suitable for compression, transfer and stuffer injection molding. It has excellent impact strength, flame resistance and electrical characteristics. Typical applications include third rail and other rapid transit insulators.
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Physical Properties	Original Value	Comments

Specific Gravity	1.87 g/cc
Water Absorption	0.10 %	24 hours, 23°C
Linear Mold Shrinkage	0.0020 - 0.0030 cm/cm

Mechanical Properties	Original Value	Comments
Hardness, Barcol	35 - 45
Tensile Strength, Ultimate	10000 - 13000 psi
Flexural Strength	23000 - 27000 psi
Compressive Strength	22000 - 24000 psi
Izod Impact, Notched	13.0 - 15.0 ft-lb/in

Electrical Properties	Original Value	Comments
Dielectric Strength	370 - 400 V/mil	Short Time
Arc Resistance	195 sec
Track Resistance	>= 60000 sec	inclined plane, 2500 volts
Comparative Tracking Index	>= 600 V

Thermal Properties	Original Value	Comments
Deflection Temperature at 1.8 MPa (264 psi)	>= 500 °F
Flammability, UL94	V-0 @Thickness 6.35 mm
	V-0 @Thickness 3.17 mm
	V-0 @Thickness 1.59 mm
	V-0 @Thickness 1.02 mm
Flammability Test	50	burn time, [sec]
	200	ignition time, [sec]

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

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PBMC068 / 27251

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