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Sumitomo Bakelite North America RX® 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 RX® 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/in³
Powder; ASTM D1895
Density 1.76 g/cc
0.0636 lb/in³
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/cm²
1.9 ft-lb/in²
ISO 179
Thermal Properties Metric English Comments
CTE, linear, Parallel to Flow 14.0 µm/m-°C

@Temperature 23.0 °C
7.78 µin/in-°F

@Temperature 73.4 °F
TMA; ASTM E381
Thermal Conductivity 0.550 W/m-K
3.82 BTU-in/hr-ft²-°F
ASTM F433
Maximum Service Temperature, Air 150 °C
302 °F
UL Temperature Index; UL 746B
Deflection Temperature at 1.8 MPa (264 psi) 280 °C
536 °F
As Molded; ASTM D648A
>= 282 °C
>= 540 °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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