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Sumitomo Bakelite RX® 655 Phenolic Molding Compound
Categories:
Polymer
;
Thermoset
;
Phenolic
;
Phenolic/Glass Fiber SMC
Material Notes:
RX® 655 is a fiberglass reinforced phenolic molding compound, with good dimensional stability and good strength at elevated temperatures.
Information provided by Sumitomo Bakelite High Performance Plastics (sbhpp)
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Physical Properties
Metric
English
Comments
Specific Gravity
2.10
g/cc
2.10
g/cc
ASTM D792
Apparent Bulk Density
1.00
g/cc
0.0361
lb/in³
ASTM D1895
Water Absorption
0.020 %
@Time 86400 sec
0.020 %
@Time 24.0 hour
ASTM D570
0.080 %
@Time 173000 sec
0.080 %
@Time 48.0 hour
ASTM D570
Linear Mold Shrinkage
0.00060
cm/cm
0.00060
in/in
ASTM D955
Mechanical Properties
Metric
English
Comments
Hardness, Rockwell E
110
110
ASTM D785
Tensile Strength
90.0
MPa
13100
psi
ASTM D638
Flexural Strength
159
MPa
23100
psi
ASTM D790
Flexural Modulus
24.0
GPa
3480
ksi
ASTM D790
Compressive Strength
324
MPa
47000
psi
ASTM D695
Izod Impact, Notched
0.320
J/cm
0.599
ft-lb/in
ASTM D256A
Electrical Properties
Metric
English
Comments
Dielectric Strength
12.8
kV/mm
@Frequency 60 Hz
325
kV/in
@Frequency 60 Hz
SS, wet; ASTM D149
13.4
kV/mm
@Frequency 60 Hz
340
kV/in
@Frequency 60 Hz
ST, wet; ASTM D149
Arc Resistance
185
sec
185
sec
ASTM D495
Thermal Properties
Metric
English
Comments
CTE, linear, Parallel to Flow
14.0
µm/m-°C
7.78
µin/in-°F
ASTM E831
Thermal Conductivity
0.940
W/m-K
6.52
BTU-in/hr-ft²-°F
ASTM C518
Deflection Temperature at 1.8 MPa (264 psi)
193
°C
379
°F
As Molded; ASTM D648A
>=
282
°C
>=
540
°F
Post Baked; ASTM D648A
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
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Users viewing this material also viewed the following:
Sumitomo Bakelite North America RX® 655 Novolac Phenolic
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PSUMIT746 / 194551
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