PPS- TECHTRON® PPS – UNFILLED (POLYPHENYLENE SULFIDE)
Material Information
PPS (PolyPhenylene Sulfide) is a semi-crystalline engineering thermoplastic. It offers the broadest resistance to chemicals of any advanced engineering plastic. There are no known solvents that effect PPS under 392º F, and it is inert to steam, strong bases, fuels, and acids. It is ideal for precise tolerance machined components because it has minimal water absorption, has a very low coefficient of linear thermal expansion, and is stress relieving manufactured. PPS is also a great option for structural applications, corrosive environments, and a lower temperature replacement for PEEK. At moderate temperatures PPS offers great dimensional stability and strength.
Unlike reinforced grades of PPS, unfilled Techtron® PPS is easily machined to close tolerances. However, it is not recommended for wear applications. It is available in a natural off white color in rod and plate.
Application
- Lantern rings
- Aerospace applications
- Pump housings
- High-pressure liquid chromatography components
- Water retaining rings
- Hydrocarbon pump, valve, and compressor components
- Oil field parts
- Medical and diagnostic device parts
- Electronic test sockets and fixtures
- Flow meter rotors
- Engine sensors
- Halogen lamp sockets
Properties
- Broadest resistance to chemicals of all advanced engineering plastics
- Easy to machine to close tolerances
- Great dimensional stability and strength at moderate temperatures
- Inert to steam, strong bases, fuels, and acids
- Minimal water absorption
- Excellent electrical insulator
- Very low coefficient of linear thermal expansion
- FDA and USDA compliant
Physical |
Astm Test Method |
Techtron® PPS |
| Density (lb/in^3) | D792 | 0.049 |
| Specific Gravity | D792 | 1.35 |
| Water Absorption @ 24 hours (%) | D570 | 0.01 |
Mechanical |
||
| Tensile Strength (PSI) | D638 | 13,500 |
| Tensile Modulus (PSI) | D638 | 500,000 |
| Tensile Elongation at Break (%) | D638 | 15 |
| Flexural Strength (PSI) | D790 | 21,000 |
| Flexural Modulus (PSI) | D790 | 575,000 |
| Compressive Strength (PSI) | D695 | 21,500 |
| Compressive Modulus (PSI) | D695 | 430,000 |
| Izod Impact (Notched), ft-lb/in | D256 | 0.6 |
| Rockwell Hardness | D785 | M95, R125 |
Thermal |
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| Coefficient of Thermal Expansion, 10^-5/°F |
D696 | 2.8 |
| Heat Deflection Temperature 264 psi, ºF | D648 | 250 |
| Glass Transition Temp, ºF | D3418 | NA |
| Continous Service Temp (Operating), °F | – | 425 |
| Thermal Conductivity, BTU-in/hr-ft² °F | C177 | 2 |
| Flammability Rating | UL94 | VO |
Electrical |
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| Dielectric Strength, Short Term, (Volts/Mil) @ .125″ Thick |
D149 | 540 |
| Volume Resistivity (ohm-cm) @ 50% RH | D257 | 4.50 x 10^16 |
| Dielectric Constant at 1 MHz | D150 | 3 |
| Dissipation Factor at 1 MHz | D150 | 0.0013 |
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. All values at 73°F (23°C) unless otherwise noted.