Sumitomo Bakelite Durez® 23570 Phenolic, Injection Grade

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Sumitomo Bakelite Durez® 23570 Phenolic, Injection Grade
Categories:	Polymer; Thermoset; Phenolic
Material Notes:	Durez 23570 Black Phenolic is a glass and mineral filled two-stage, special purpose molding material. It is designed for high strength, good dimensional stability, and electrical properties even after long term exposure to elevated temperatures. It is designed to meet the requirements of Mil-M-14G, Type MFH. Typical uses are connectors, automotive transmission components, computer parts and brush holders. Information provided by Sumitomo Bakelite North America, Inc.
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Physical Properties	Original Value	Comments

Density	1.77 g/cc	ASTM D792
Apparent Bulk Density	0.800 g/cc	ASTM D1895
Water Absorption	0.050 %	ASTM D570
Linear Mold Shrinkage	0.0030 cm/cm	ASTM D955

Mechanical Properties	Original Value	Comments
Tensile Strength, Ultimate	103 MPa	ASTM D638
Tensile Modulus	17.2 GPa	ASTM D638
Flexural Yield Strength	172 MPa	ASTM D790
Compressive Yield Strength	262 MPa	ASTM D695
Poissons Ratio	0.32
Shear Modulus	6.52 GPa	Calculated
Shear Strength	9100 psi	after 16hrs @ 300°F
	12300 psi	as molded
Izod Impact, Notched	0.267 J/cm	ASTM D256

Electrical Properties	Original Value	Comments
Electrical Resistivity	1.00e+12 ohm-cm	ASTM D257
Dielectric Constant	5.5 @Frequency 1e+6 Hz	ASTM D150
Dielectric Strength	14.7 kV/mm	Step by step; ASTM D149
	17.7 kV/mm	Short Time; ASTM D149
Dissipation Factor	0.010 @Frequency 1e+6 Hz	ASTM D150

Thermal Properties	Original Value	Comments
CTE, linear	20.5 µm/m-°C @Temperature 23.0 - 60.0 °C
Specific Heat Capacity	0.280 BTU/lb-°F
Thermal Conductivity	0.00108 cal cm/sec-cm²-°C
Maximum Service Temperature, Air	150 °C @Thickness 3.00 mm	UL Temp Index
Deflection Temperature at 1.8 MPa (264 psi)	204 °C	ASTM D648
Flammability, UL94	V-0 @Thickness 3.00 mm
	5VA @Thickness 1.50 mm

Descriptive Properties
Color	Black
Feeding & Preforming	Good
Form	Granular

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P90X20a / 130908

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