GENERAL PROPERTIES PolyPhenylene Sulfide (PPS) offers the broadest resistance to chemicals of any advanced engineering plastic. They have no known solvents below 392°F (200°C) and are inert to steam, strong bases, fuels and acids. Minimal moisture absorption and a very low coefficient of linear thermal expansion, combined with stress-relieving manufacturing, make PPS ideally suited for precise tolerance machined components.
PPS GRADES 40% Glass Reinforced PPS
This product is the most recognized filled grade of PPS. It offers better dimensional stability and thermal performance than unfilled Techtron ® PPS and maintains its strength to above 425°F (220°C).
Bearing Grade PPS
Bearing grade PPS is internally lubricated and carbon fiber reinforced offering a low coefficient of thermal expansion and uncompromised chemical resistance. It is well suited for thrust or wear applications or when an electrically conductive material is required.
NOTE:
Many other filled grades of PPS are also available in stock shape forms.
Contact us for more information about these products.
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TYPICAL PROPERTIES of REPRESENTATIVE FILLED PPS GRADES | |||
| ASTM or UL test | Property | 40% Glass Reinforced | Bearing Grade |
| PHYSICAL | |||
| D792 | Density (lb/in³) (g/cm³) |
0.061 1.70 |
0.056 1.55 |
| D570 | Water Absorption, 24 hrs (%) | 0.02 | 0.02 |
| MECHANICAL | |||
| D638 | Tensile Strength (psi) | 13,000 | 10,000 |
| D638 | Tensile Modulus (psi) | 730,000 | 800,000 |
| D638 | Tensile Elongation at Break (%) | 2.0 | 1.5 |
| D790 | Flexural Strength (psi) | 23,000 | 15,000 |
| D790 | Flexural Modulus (psi) | 1,000,000 | 1,000,000 |
| D695 | Compressive Strength (psi) | 24,000 | 15,000 |
| D695 | Compressive Modulus (psi) | 1,300,000 | 800,000 |
| D785 | Hardness, Rockwell | M94 / R125 | M93 / R126 |
| D256 | IZOD Notched Impact (ft-lb/in) | 1.0 | 1.0 |
| THERMAL | |||
| D696 | Coefficient of Linear Thermal Expansion (x 10-5 in./in./°F) |
2.5 | 1.7 |
| D648 | Heat Deflection Temp (°F / °C) at 264 psi |
490 / 254 |
490 / 254 |
| D3418 | Glass Transition Temp (°F / °C) | n.a. | n.a. |
| - | Max Operating Temp (°F / °C) | 450 / 232 | 450 / 232 |
| C177 | Thermal Conductivity (BTU-in/ft²-hr-°F) (x 10-4 cal/cm-sec-°C) |
2.10 7.23 |
2.20 7.57 |
| UL94 | Flammability Rating | V-O | V-O |
| ELECTRICAL | |||
| D149 | Dielectric Strength (V/mil) short time, 1/8" thick | 385 | - |
| D150 | Dielectric Constant at 1 MHz | - | - |
| D150 | Dissipation Factor at 1 MHz | - | - |
| D257 | Volume Resistivity (ohm-cm)at 50% RH | - | - |
NOTE: The information contained herein are typical values intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control. Contact us for manufacturers' complete material property datasheets.ENSIFIDE and TECATRON are registered trademarks of Ensinger Engineering Plastics, Inc.
All values at 73°F (23°C) unless otherwise noted.
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