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	Original Value	Comments

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

Mechanical Properties	Original Value	Comments
Hardness, Rockwell E	83	ASTM D785
Tensile Strength	86.0 MPa	ASTM D638
Flexural Strength	140 MPa	ASTM D790
Flexural Modulus	10.3 GPa	ASTM D790
Compressive Strength	210 MPa	ASTM D695
Izod Impact, Notched	40.0 J/m	ASTM D256A

Electrical Properties	Original Value	Comments
Dielectric Strength	11.5 kV/mm @Frequency 60 Hz	SS, dry; ASTM D149
	15.0 kV/mm @Frequency 60 Hz	ST, dry; ASTM D149
Arc Resistance	50 sec	ASTM D495

Thermal Properties	Original Value	Comments
CTE, linear, Parallel to Flow	13.0 µm/m-°C	ASTM E831
Thermal Conductivity	0.360 W/m-K	ASTM C518
Deflection Temperature at 1.8 MPa (264 psi)	170 °C	As Molded; ASTM D648A
	>= 282 °C	Post Baked; ASTM D648A
Flammability, UL94	HB @Thickness 1.60 mm
	V-1 @Thickness 3.20 mm

Descriptive Properties
UL Temperature Index	150	UL 746B

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PSUMIT209 / 194014

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