Sumitomo Bakelite Durez® 22257 Phenolic, Injection Grade

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Sumitomo Bakelite Durez® 22257 Phenolic, Injection Grade
Categories:	Polymer; Thermoset; Phenolic; Phenolic, Novolac, Impact Grade, Filled
Material Notes:	Durez 22257 Black Phenolic is a two-stage, asbestos-free, medium impact molding material. It is designed for appliance and electrical applications where additional mechanical strength is required. Typical applications include circuit breakers, small motor bases and housings, appliance panels, terminal blocks, barrier strips, etc. Durez 22257 is fungus resistant per Mil-I-631D and Mil-810 A/E-2572 Information provided by Sumitomo Bakelite North America, Inc.
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Physical Properties	Metric	English	Comments

Density	1.39 g/cc	0.0502 lb/in³	ASTM D792
Apparent Bulk Density	0.570 g/cc	0.0206 lb/in³	ASTM D1895
Water Absorption	0.60 %	0.60 %	ASTM D570
Linear Mold Shrinkage	0.011 cm/cm	0.011 in/in	ASTM D955

Mechanical Properties	Metric	English	Comments
Tensile Strength, Ultimate	55.0 MPa	7980 psi	ASTM D638
Tensile Modulus	7.60 GPa	1100 ksi	ASTM D638
Flexural Strength	69.0 MPa	10000 psi
Compressive Strength	193 MPa	28000 psi	ASTM D695
Shear Strength	76.0 MPa	11000 psi	as molded
Izod Impact, Notched	0.240 J/cm	0.450 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	5.5 @Frequency 1e+6 Hz	5.5 @Frequency 1e+6 Hz	ASTM D150
Dielectric Strength	7.90 kV/mm	201 kV/in	Step by step; ASTM D149
	8.90 kV/mm	226 kV/in	Short Time; ASTM D149
Dissipation Factor	0.080 @Frequency 1e+6 Hz	0.080 @Frequency 1e+6 Hz	ASTM D150

Thermal Properties	Metric	English	Comments
CTE, linear	42.2 µm/m-°C @Temperature 23.0 - 60.0 °C	23.4 µin/in-°F @Temperature 73.4 - 140 °F
Specific Heat Capacity	1.42 J/g-°C	0.339 BTU/lb-°F
Thermal Conductivity	0.402 W/m-K	2.79 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air	150 °C	302 °F	UL temperature Index
Deflection Temperature at 1.8 MPa (264 psi)	149 °C	300 °F	ASTM D648
Flammability, UL94	HB @Thickness 3.00 mm	HB @Thickness 0.118 in
	V-0 @Thickness 6.00 mm	V-0 @Thickness 0.236 in

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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P90X20 / 21137

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