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Rulon Bearings

A. Schulman BMC T40-4020-AQ High Strength Arc Quenching Molding Compound
Categories: Polymer; Thermoset; Polyester, TS; Polyester (Thermoset) - Rigid

Material Notes: BMC T40-4020-AQ was formulated as a high strength arc quenching material for electrical applications. Typical applications are arc hoods and electrical contactors.

Information provided by Bulk Molding Compounds, Inc.

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Physical PropertiesMetricEnglishComments
Density 1.80 - 1.90 g/cc0.0650 - 0.0686 lb/in³Molded
Linear Mold Shrinkage 0.0025 - 0.0035 cm/cm0.0025 - 0.0035 in/in
 
Mechanical PropertiesMetricEnglishComments
Hardness, Barcol 30 - 4030 - 40
Tensile Strength 68.9 - 82.7 MPa10000 - 12000 psi
Flexural Strength 138 - 172 MPa20000 - 25000 psi
Flexural Modulus 11.7 - 13.1 GPa1700 - 1900 ksi
Compressive Strength 103 - 138 MPa15000 - 20000 psi
Izod Impact, Notched 4.81 - 5.87 J/cm9.00 - 11.0 ft-lb/in
 
Electrical PropertiesMetricEnglishComments
Dielectric Strength 13.2 - 15.2 kV/mm335 - 385 kV/inshort time
Arc Resistance >= 190 sec>= 190 sec
Comparative Tracking Index >= 500 V>= 500 V
 
Thermal PropertiesMetricEnglishComments
Deflection Temperature at 1.8 MPa (264 psi) >= 260 °C>= 500 °F
Flammability, UL94 V-0V-0
 
Processing PropertiesMetricEnglishComments
Processing Temperature 138 - 166 °C280 - 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.

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PBMC934 / 123398

Aluminum Castings

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