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Durez® 22257 (Compression)
| Category: | Phenolic , Phenolic |
| Manufacturer: | Sumitomo Bakelite North America, Inc. |
| Trademark: | Durez® |
| Fillers: | - |
| Ports: | Qinzhou, Shekou, Shanghai, Ningbo |
| Delivery Terms | FOB, CIF, DAP, DAT, DDP |
| PDF: | ArA4n4_Durez-22257-Compression-.pdf  |
| PRICE: | Order Products email sales@su-jiao.com |
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| Durez 22257 Black Phenolic is a two-stage, 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. |
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| Physical | Nominal Value | Unit | Test Method |
|---|---|---|---|
| Specific Gravity | 1.40 | g/cm³ | ASTM D792 |
| Apparent Density | 0.57 | g/cm³ | ASTM D1895 |
| Molding Shrinkage - Flow | 0.70 | % | ASTM D6289 |
| Water Absorption | 0.60 | % | ASTM D570 |
| Mechanical | Nominal Value | Unit | Test Method |
|---|---|---|---|
| Tensile Modulus | 7600 | MPa | ASTM D638 |
| Tensile Strength | 52.0 | MPa | ASTM D638 |
| Flexural Strength | 69.0 | MPa | ASTM D790 |
| Compressive Strength | 189 | MPa | ASTM D695 |
| Impact | Nominal Value | Unit | Test Method |
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| Notched Izod Impact | 25 | J/m | ASTM D256 |
| Thermal | Nominal Value | Unit | Test Method |
|---|---|---|---|
| Deflection Temperature Under Load (1.8 MPa, Unannealed) | 171 | °C | ASTM D648 |
| CLTE - Flow (23 to 60°C) | 4.2E-5 | cm/cm/°C | ASTM E831 |
| Specific Heat | 1420 | J/kg/°C | ASTM C351 |
| Thermal Conductivity | 0.40 | W/m/K | ASTM C177 |
| RTI Elec (3.00 mm) | 150 | °C | UL 746 |
| Electrical | Nominal Value | Unit | Test Method |
|---|---|---|---|
| Volume Resistivity | 1.0E+12 | ohms·cm | ASTM D257 |
| Dielectric Strength | ASTM D149 | ||
| -- 1 | 15 | kV/mm | ASTM D149 |
| -- 2 | 13 | kV/mm | ASTM D149 |
| Dielectric Constant (1 MHz) | 4.50 | ASTM D2520 | |
| Dissipation Factor (1 MHz) | 0.040 | ASTM D150 |
| Flammability | Nominal Value | Unit | Test Method |
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| Flame Rating | UL 94 | ||
| 1.50 mm | HB | UL 94 | |
| 3.00 mm | HB | UL 94 | |
| 6.00 mm | V-0 | UL 94 |
| Thermoset | Nominal Value | Unit | |
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| Shelf Life | 52 | wk |
| Additional Information |
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| Test Specimens Molded at 340-350°FTypical transfer-molded shrinkage is 0.009 in/inDurez 22257 is fungus resistant per Mil-I-631D and Mil-810 A/E-5272. |
| Note Message | |
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| 1 . | Method A (short time) |
| 2 . | Method B (step by step) |
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