Sumitomo Bakelite RX® 643 Phenolic Resole Compound

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Sumitomo Bakelite RX® 643 Phenolic Resole Compound
Categories:	Polymer; Thermoset; Phenolic; Phenolic, Resole, Glass Fiber Filled
Material Notes:	RX® 643 is a fiberglass reinforced, ammonia-free, phenolic resole compound, with good dimensional stability and good strength at elevated temperatures. Meets ASTM D-5948 Type GPI-10. Information provided by Sumitomo Bakelite High Performance Plastics (sbhpp)
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Physical Properties	Metric	English	Comments

Specific Gravity	1.75 g/cc	1.75 g/cc	ASTM D792
Apparent Bulk Density	0.800 g/cc	0.0289 lb/in³	ASTM D1895
Water Absorption	0.050 % @Time 86400 sec	0.050 % @Time 24.0 hour	ASTM D570
	0.30 % @Time 173000 sec	0.30 % @Time 48.0 hour	ASTM D570
Linear Mold Shrinkage	0.0015 cm/cm	0.0015 in/in	ASTM D955

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell E	85	85	ASTM D785
Tensile Strength	96.0 MPa	13900 psi	ASTM D638
Flexural Strength	186 MPa	27000 psi	ASTM D790
Flexural Modulus	13.8 GPa	2000 ksi	ASTM D790
Compressive Strength	234 MPa	33900 psi	ASTM D695
Izod Impact, Notched	0.600 J/cm	1.12 ft-lb/in	ASTM D256A

Electrical Properties	Metric	English	Comments
Dielectric Strength	11.4 kV/mm @Frequency 60 Hz	290 kV/in @Frequency 60 Hz	SS, dry; ASTM D149
	13.8 kV/mm @Frequency 60 Hz	351 kV/in @Frequency 60 Hz	ST, dry; ASTM D149
Arc Resistance	135 sec	135 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	0.500 W/m-K	3.47 BTU-in/hr-ft²-°F	ASTM C518
Deflection Temperature at 1.8 MPa (264 psi)	280 °C	536 °F	As Molded; ASTM D648A
	>= 282 °C	>= 540 °F	Post Baked; ASTM D648A

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PSUMIT764 / 194569

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