Sumitomo Bakelite XB-22 Phenolic Nocolac Molding Compound

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Sumitomo Bakelite XB-22 Phenolic Nocolac Molding Compound
Categories:	Polymer; Thermoset; Phenolic; Phenolic/Glass Fiber SMC
Material Notes:	XB-22 is a fiberglass reinforced phenolic novolac molding compound, with excellent dimensional stability and good strength at elevated temperatures. This material is formulated for low thermal conductivity. Information provided by Sumitomo Bakelite High Performance Plastics (sbhpp)
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Physical Properties	Metric	English	Comments

Specific Gravity	1.49 g/cc	1.49 g/cc	ASTM D792
Apparent Bulk Density	0.700 g/cc	0.0253 lb/in³	Powder; ASTM D1895
Water Absorption	0.11 % @Time 86400 sec	0.11 % @Time 24.0 hour	ASTM D570
Linear Mold Shrinkage	0.0025 cm/cm	0.0025 in/in	ASTM D955

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell E	83	83	ASTM D785
Tensile Strength	86.0 MPa	12500 psi	ASTM D638
Flexural Strength	140 MPa	20300 psi	ASTM D790
Flexural Modulus	10.3 GPa	1490 ksi	ASTM D790
Compressive Strength	210 MPa	30500 psi	ASTM D695
Izod Impact, Notched	0.400 J/cm	0.749 ft-lb/in	ASTM D256A

Electrical Properties	Metric	English	Comments
Dielectric Strength	11.5 kV/mm @Frequency 60 Hz	292 kV/in @Frequency 60 Hz	SS, dry; ASTM D149
	15.0 kV/mm @Frequency 60 Hz	381 kV/in @Frequency 60 Hz	ST, dry; ASTM D149
Arc Resistance	50 sec	50 sec	ASTM D495

Thermal Properties	Metric	English	Comments
CTE, linear, Parallel to Flow	13.0 µm/m-°C	7.22 µin/in-°F	ASTM E831
Thermal Conductivity	0.360 W/m-K	2.50 BTU-in/hr-ft²-°F	ASTM C518
Deflection Temperature at 1.8 MPa (264 psi)	170 °C	338 °F	As Molded; ASTM D648A
	>= 282 °C	>= 540 °F	Post Baked; ASTM D648A
Flammability, UL94	HB @Thickness 1.60 mm	HB @Thickness 0.0630 in
	V-1 @Thickness 3.20 mm	V-1 @Thickness 0.126 in

Descriptive Properties
UL Temperature Index	150		UL 746B

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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PSUMIT209 / 194014

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