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Sumitomo Bakelite Durez® 22257 Phenolic, Injection Grade

Category Polymer , Thermoset , Phenolic , Phenolic, Novolac, Impact Grade, Filled
Manufacturer Sumitomo Bakelite High Peformance Plastics
Trade Name Durez®
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Sumitomo Bakelite Durez® 22257 Phenolic, Injection Grade.pdf
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Material Notes:
Durez 22257 Black Phenolic is a two-stage, asbestos-free, medium impact molding material. It is designed for appliance and electrical applications where additional mechanical strength is required. Typical applications include circuit breakers, small motor bases and housings, appliance panels, terminal blocks, barrier strips, etc.Durez 22257 is fungus resistant per Mil-I-631D and Mil-810 A/E-2572Information provided by Sumitomo Bakelite North America, Inc.
Physical Properties Metric English Comments
Density 1.39 g/cc
0.0502 lb/in³
ASTM D792
Apparent Bulk Density 0.570 g/cc
0.0206 lb/in³
ASTM D1895
Water Absorption 0.60 %
0.60 %
ASTM D570
Linear Mold Shrinkage 0.011 cm/cm
0.011 in/in
ASTM D955
Mechanical Properties Metric English Comments
Tensile Strength, Ultimate 55.0 MPa
7980 psi
ASTM D638
Tensile Modulus 7.60 GPa
1100 ksi
ASTM D638
Flexural Strength 69.0 MPa
10000 psi
Compressive Strength 193 MPa
28000 psi
ASTM D695
Shear Strength 76.0 MPa
11000 psi
as molded
Izod Impact, Notched 0.240 J/cm
0.450 ft-lb/in
ASTM D256
Thermal Properties Metric English Comments
CTE, linear 42.2 µm/m-°C

@Temperature 23.0 - 60.0 °C
23.4 µin/in-°F

@Temperature 73.4 - 140 °F
Specific Heat Capacity 1.42 J/g-°C
0.339 BTU/lb-°F
Thermal Conductivity 0.402 W/m-K
2.79 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air 150 °C
302 °F
UL temperature Index
Deflection Temperature at 1.8 MPa (264 psi) 149 °C
300 °F
ASTM D648
Flammability, UL94 HB

@Thickness 3.00 mm
HB

@Thickness 0.118 in
V-0

@Thickness 6.00 mm
V-0

@Thickness 0.236 in
Electrical Properties Metric English Comments
Electrical Resistivity 1.00e+12 ohm-cm
1.00e+12 ohm-cm
ASTM D257
Dielectric Constant 5.5

@Frequency 1e+6 Hz
5.5

@Frequency 1e+6 Hz
ASTM D150
Dielectric Strength 7.90 kV/mm
201 kV/in
Step by step; ASTM D149
8.90 kV/mm
226 kV/in
Short Time; ASTM D149
Dissipation Factor 0.080

@Frequency 1e+6 Hz
0.080

@Frequency 1e+6 Hz
ASTM D150
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