Sumitomo Bakelite Durez® 156 Phenolic, Compression Grade

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Sumitomo Bakelite Durez® 156 Phenolic, Compression Grade
Categories:	Polymer; Thermoset; Phenolic; Phenolic, Novolac, Mineral/Fiber Filled
Material Notes:	Durez 156 Black Phenolic is a two-stage, asbestos-free, heat resistant/electrical molding material. It exhibits excellent dimensional stability, high heat resistance, good molded appearance, and UL flammability rating. Typical applications include automotive carburetor spacers, sealing rings, thrust washers, speedometer sleeves, appliance terminals, probe controls, insulators, light baffles, etc. Durez 156 is fungus resistant per Mil-E-5272C. Information provided by Sumitomo Bakelite North America, Inc.
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Physical Properties	Original Value	Comments

Density	1.58 g/cc	ASTM D792
Apparent Bulk Density	0.650 g/cc	ASTM D1895
Water Absorption	0.30 %	ASTM D570
Linear Mold Shrinkage	0.0040 cm/cm	ASTM D955

Mechanical Properties	Original Value	Comments
Tensile Strength, Ultimate	41.0 MPa	ASTM D638
Tensile Modulus	10.3 GPa	ASTM D638
Flexural Strength	72.0 MPa
Compressive Strength	196 MPa	ASTM D695

Electrical Properties	Original Value	Comments
Electrical Resistivity	1.00e+12 ohm-cm	ASTM D257
Dielectric Constant	5.0 @Frequency 1e+6 Hz	ASTM D150
Dielectric Strength	10.8 kV/mm	Step by step; ASTM D149
	11.8 kV/mm	Short Time; ASTM D149
Dissipation Factor	0.050 @Frequency 1e+6 Hz	ASTM D150
Arc Resistance	180 sec	ASTM D495
Comparative Tracking Index	180 V	IEC Tracking Index

Thermal Properties	Original Value	Comments
Maximum Service Temperature, Air	160 °C	UL temperature Index
Deflection Temperature at 1.8 MPa (264 psi)	191 °C	ASTM D648
Flammability, UL94	V-1 @Thickness 0.500 mm
	V-0 @Thickness 1.50 mm

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P90X13a / 142666

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