Sumitomo Bakelite North America RXÂ® 640 Fiberglass Reinforced Phenolic Resole

Category	Polymer , Thermoset , Filled/Reinforced Thermoset , Phenolic , Phenolic, Resole, Glass Fiber Filled
Manufacturer	Sumitomo Bakelite North America
Trade Name
Port	Shanghai port,China
Trade Terms	FOB, CFR, CIF
Payment Terms	L/C, T/T, Western Union
Download PDF	Sumitomo Bakelite North America RXÂ® 640 Fiberglass Reinforced Phenolic Resole.pdf
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Material Notes:

RXÂ 640 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-5.Information supplied by Sumitomo Bak North America.

Physical Properties	Metric	English	Comments
Bulk Density	0.80 g/cc	0.029 lb/inÂ³	Powder; ASTM D1895
Density	1.76 g/cc	0.0636 lb/inÂ³	ASTM D792
Water Absorption	0.06 % @Time 86000 sec	0.06 % @Time 24 hour	ASTM D570
	0.22 % @Time 170000 sec	0.22 % @Time 48 hour	ASTM D570
Linear Mold Shrinkage	0.002 cm/cm	0.002 in/in	ASTM D955

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell E	90	90	ASTM D785
Tensile Strength, Ultimate	86 MPa	12000 psi	ISO 527
Flexural Strength	186 MPa	27000 psi	ISO 178
Flexural Modulus	14.5 GPa	2100 ksi	ISO 178
Compressive Strength	248 MPa	36000 psi	ISO 604
Charpy Impact, Notched	0.40 J/cmÂ²	1.9 ft-lb/inÂ²	ISO 179

Thermal Properties	Metric	English	Comments
CTE, linear, Parallel to Flow	14.0 Âµm/m-Â°C @Temperature 23.0 Â°C	7.78 Âµin/in-Â°F @Temperature 73.4 Â°F	TMA; ASTM E381
Thermal Conductivity	0.550 W/m-K	3.82 BTU-in/hr-ftÂ²-Â°F	ASTM F433
Maximum Service Temperature, Air	150 Â°C	302 Â°F	UL Temperature Index; UL 746B
Deflection Temperature at 1.8 MPa (264 psi)	280 Â°C	536 Â°F	As Molded; ASTM D648A
	>= 282 Â°C	>= 540 Â°F	Post Baked; ISO 75 A
Flammability, UL94	V-0 @Thickness 1.60 mm	V-0 @Thickness 0.0630 in
	V-0 @Thickness 3.20 mm	V-0 @Thickness 0.126 in

Electrical Properties	Metric	English	Comments
Dielectric Strength	11.8 kV/mm @Frequency 60.0 Hz	300 kV/in @Frequency 60.0 Hz	Wet, step-by-step; ASTM D149
	14.0 kV/mm @Frequency 60 Hz	356 kV/in @Frequency 60 Hz	Wet, short time; ASTM D149
Arc Resistance	160 sec	160 sec	ASTM D495

Descriptive Properties	Value	Comments
Available Molding Grades	Compression, Transfer, Injection
Color	Black
Form	Granular

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