Materials and Tools
PPS (Polyphenylene Sulfide)
PPS (polyphenylene sulfide) is a highly chemical resistant polymer for room temperature and slightly elevated temperature applications. Great care should be taken, however, when using the polymer in elevated temperatures, as studies have shown the polymer to lose much of its chemical resistance properties when the temperature is too high. Additionally, the chemicals that show an effect with PPS are not pH dependent; however it is recommended to investigate specific compatibility prior to using strong acids or bases and some halogenated organic solutions.
| Temperature Range | up to 50 °C |
|---|---|
| Thread Strength | Excellent |
| Oxygen Permeability | N/A |
| pH Range | 0 - 14 |
| Sterilization Techniques | |
| Autoclavable? | Y |
PPS Extended Properties
| General | Comments | Units | ||
|---|---|---|---|---|
| Density | ASTM D792 | g/cc | 1.70 | |
| Water Absorption | 24 hour immersion | - | % | 0.02 |
| Moisture Absorption at Equilibrium | Saturated immersion | - | % | 0.02 |
| Hardness, Rockwell M | ASTM D785 | - | 94 | |
| Hardness, Rockwell R | ASTM D785 | - | 125 | |
| Hardness, Rockwell D | ASTM D2240 | - | 86 | |
| Mechanical | Comments | Units | ||
| Tensile Strength | Ultimate | ASTM D638 | MPa(psi) | 90(13,053) |
| Elongation | Break | ASTM D638 | % | 2 |
| Modulus of Elasticity | GPa | ASTM D638 | 725 ksi | 5 |
| Flexural Modulus | GPa | ASTM D790 | 1000 ksi | 6.9 |
| Flexural Yield Strength | ASTM D790 | MPa(psi) | 165(23,061) | |
| IZOD Impact Strength | J/cm | ASTM D256 Type A | 0.99 ft.-lb./in. | 0.53 |
| Compressive Yield Strength | ASTM D256 10% Def | MPa(psi) | 165(23,061) | |
| Compressive Modulus | GPa | ASTM D695 | 1,305 ksi | 9 |
| K (wear) Factor | 10-10 in3-min/lb-ft-hr | PTM55010 | - | 999 |
| Limiting Pressure Velocity | MPa-m/sec | PTM55010 | 3,426 psi-ft/min | 0.12 |
| Thermal | Comments | Units | ||
| Coefficient of Thermal Expansion | linear 20 °C, µm/m- °C | ASTM E837 (TMA) | 25 µin/in- °F | 45 |
| Deflection Temperature | at 1.8 MPa, °C | ASTM D648 | 489 °F | 254 |
| Melting Point °C | ASTM D3418 | 540 °F | 282 | |
| Maximum Service Temperature | Air, °C | Contiuous Service without load | 450 °F | 232 |
| Thermal Conductivity | W/m-K | - | 2.1 BTU-in/hr-ft2- °F | 0.3 |
| Flammability, UL94 | (5=V-0; 4=V-1; 3=V-2; 1=HB | V-0 UL 94 | 5 | 5(V-0) |
| Electrical | Comments | Units | ||
| Electrical Resistivity | Lower Limit | ASTM D257 | 1E+15 ohm-cm | 5(V-0) |
| Dielectric Strength | Short Term | ASTM D149(2) | 386 kV/in | 15.2 |