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- Sumitomo Bakelite North America RX® 431 Cellulose Reinforced Phenolic Novolac
Sumitomo Bakelite North America RX® 431 Cellulose Reinforced Phenolic Novolac
| Category | Polymer , Thermoset , Filled/Reinforced Thermoset , Phenolic , Phenolic, Novolac, Cellulose Filled |
| Manufacturer | Sumitomo Bakelite North America |
| Trade Name | |
| Port | Ningbo port,China |
| Trade Terms | FOB, CFR, CIF |
| Payment Terms | L/C, T/T, Western Union |
| Download PDF | Sumitomo Bakelite North America RX® 431 Cellulose Reinforced Phenolic Novolac.pdf  |
| Price | EMAIL US sales@lookpolymers.com |
Material Notes:
RX431 is a cellulose fiber reinforced phenolic novolac molding compound. This material is recommended for large parts requiring moderate toughness. It is designed to meet the requirements of ASTM D-5948-96, Type CFI-10. (Replaces Military Specification MIL-M-14H.)Information supplied by Sumitomo Bak North America.
| Physical Properties | Metric | English | Comments |
|---|---|---|---|
| Bulk Density | 0.400 g/cc | 0.0145 lb/in³ | Powder; ASTM D1895 |
| Density | 1.43 g/cc | 0.0517 lb/in³ | ASTM D-792 |
| Water Absorption | 0.60 % | 0.60 % | 24 hour; ASTM D570 |
| 1.9 % | 1.9 % | 48 hour; ASTM D570 | |
| Linear Mold Shrinkage | 0.0020 cm/cm | 0.0020 in/in | ASTM D955 |
| Mechanical Properties | Metric | English | Comments |
|---|---|---|---|
| Hardness, Rockwell E | 75 | 75 | ASTM D785 |
| Tensile Strength, Ultimate | 41.0 MPa | 5950 psi | ASTM D638 |
| Flexural Strength | 75.0 MPa | 10900 psi | ASTM D790 |
| Flexural Modulus | 11.0 GPa | 1600 ksi | ASTM D790 |
| Compressive Strength | 186 MPa | 27000 psi | ASTM D695 |
| Izod Impact, Notched | 0.580 J/cm | 1.09 ft-lb/in | ASTM D256A |
| Thermal Properties | Metric | English | Comments |
|---|---|---|---|
| CTE, linear, Parallel to Flow | 27.0 µm/m-°C @Temperature 20.0 °C |
15.0 µin/in-°F @Temperature 68.0 °F |
ASTM E831 |
| CTE, linear, Transverse to Flow | 69.0 µm/m-°C @Temperature 20.0 °C |
38.3 µin/in-°F @Temperature 68.0 °F |
ASTM E831 |
| Thermal Conductivity | 0.580 W/m-K | 4.03 BTU-in/hr-ft²-°F | ASTM C518 |
| Maximum Service Temperature, Air | 150 °C | 302 °F | UL Temperature Index; UL 746B |
| Deflection Temperature at 1.8 MPa (264 psi) | 180 °C | 356 °F | As Molded; ASTM D648A |
| Flammability, UL94 | HB @Thickness 1.60 mm |
HB @Thickness 0.0630 in |
|
| HB @Thickness 3.20 mm |
HB @Thickness 0.126 in |
| Electrical Properties | Metric | English | Comments |
|---|---|---|---|
| Dielectric Strength | 1.40 kV/mm | 35.6 kV/in | 60 Hz, wet, SS; ASTM D149 |
| 1.60 kV/mm | 40.6 kV/in | ST; ASTM D149 | |
| Arc Resistance | 60 sec | 60 sec | ASTM D495 |
| Descriptive Properties | Value | Comments |
|---|---|---|
| Available Molding Grades | Compression, Transfer, Injection | |
| Color | Black | |
| Form | Pellet |
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