Sumitomo Bakelite DurezÂ® 22257 Phenolic, Compression 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 DurezÂ® 22257 Phenolic, Compression Grade.pdf
Price	EMAIL US sales@lookpolymers.com

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 Bak North America, Inc.

Physical Properties	Metric	English	Comments
Density	1.40 g/cc	0.0506 lb/inÂ³	ASTM D792
Apparent Bulk Density	0.570 g/cc	0.0206 lb/inÂ³	ASTM D1895
Water Absorption	0.60 %	0.60 %	ASTM D570
Linear Mold Shrinkage	0.0070 cm/cm	0.0070 in/in	ASTM D955

Mechanical Properties	Metric	English	Comments
Tensile Strength, Ultimate	52.0 MPa	7540 psi	ASTM D638
Tensile Modulus	7.60 GPa	1100 ksi	ASTM D638
Flexural Strength	69.0 MPa	10000 psi
Compressive Strength	189 MPa	27400 psi	ASTM D695
Shear Strength	76.0 MPa	11000 psi	as molded
Izod Impact, Notched	0.251 J/cm	0.470 ft-lb/in	ASTM D256

Thermal Properties	Metric	English	Comments
CTE, linear	42.2 Âµm/m-Â°C @Temperature 23.0 - 60.0 Â°C	23.4 Âµin/in-Â°F @Temperature 73.4 - 140 Â°F
Specific Heat Capacity	1.42 J/g-Â°C	0.339 BTU/lb-Â°F
Thermal Conductivity	0.402 W/m-K	2.79 BTU-in/hr-ftÂ²-Â°F
Maximum Service Temperature, Air	150 Â°C	302 Â°F	UL temperature Index
Deflection Temperature at 1.8 MPa (264 psi)	171 Â°C	340 Â°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	4.5 @Frequency 1e+6 Hz	4.5 @Frequency 1e+6 Hz	ASTM D150
Dielectric Strength	12.8 kV/mm	325 kV/in	Step by step; ASTM D149
	14.7 kV/mm	373 kV/in	Short Time; ASTM D149
Dissipation Factor	0.040 @Frequency 1e+6 Hz	0.040 @Frequency 1e+6 Hz	ASTM D150

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