Sumitomo Bakelite Durez® 31735 Phenolic, Injection Grade

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Sumitomo Bakelite Durez® 31735 Phenolic, Injection Grade
Categories:	Polymer; Thermoset; Phenolic
Material Notes:	Durez 31735 is a special purpose phenolic molding compound developed for automotive and industrial pulleys. This material is designed to optimize pulley performance relating to belt life, dimensional tolerance, impact strength, and other properties required in pulley applications. Information provided by Sumitomo Bakelite North America, Inc.
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Physical Properties	Metric	English	Comments

Density	1.43 g/cc	0.0517 lb/in³	ASTM D792
Apparent Bulk Density	0.490 g/cc	0.0177 lb/in³	ASTM D1895
Water Absorption	0.50 %	0.50 %	ASTM D570
Linear Mold Shrinkage	0.0090 cm/cm	0.0090 in/in	ASTM D955

Mechanical Properties	Metric	English	Comments
Tensile Strength, Ultimate	52.0 MPa	7540 psi	ASTM D638
Tensile Modulus	6.90 GPa	1000 ksi	ASTM D638
Flexural Strength	86.0 MPa	12500 psi
Compressive Strength	207 MPa	30000 psi	ASTM D695
Izod Impact, Notched	0.214 J/cm	0.401 ft-lb/in	ASTM D256

Electrical Properties	Metric	English	Comments
Electrical Resistivity	1.00e+12 ohm-cm	1.00e+12 ohm-cm	ASTM D257
Dielectric Constant	5.1 @Frequency 1e+6 Hz	5.1 @Frequency 1e+6 Hz	ASTM D150
Dielectric Strength	11.8 kV/mm	300 kV/in	Step by step; ASTM D149
	12.8 kV/mm	325 kV/in	Short Time; ASTM D149
Dissipation Factor	0.050 @Frequency 1e+6 Hz	0.050 @Frequency 1e+6 Hz	ASTM D150

Thermal Properties	Metric	English	Comments
CTE, linear	36.0 µm/m-°C @Temperature 30.0 - 150 °C	20.0 µin/in-°F @Temperature 86.0 - 302 °F
Specific Heat Capacity	1.17 J/g-°C	0.280 BTU/lb-°F
Thermal Conductivity	0.370 W/m-K	2.57 BTU-in/hr-ft²-°F	Cenco Fitch
Deflection Temperature at 1.8 MPa (264 psi)	163 °C	325 °F	ASTM D648

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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P90X45a / 142669

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