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Ryton ® PPS
(PolyPhenylene Sulfide) Specifications
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.
( see also
Techtron unfilled PPS, bearing grade
Techtron HPV ,
Ensifide/Tecatron PPS Specifications )
| 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 |
1.2 |
| 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.
All values at 73°F (23°C) unless otherwise noted.
ENSIFIDE and TECATRON are registered trademarks of
Ensinger Engineering Plastics, Inc.
FORTRON is a registered trademark of Celanese AG Ticona.
RYTON is a registered trademark of Chevron Phillips Chemical Company.
TECHTRON is a registered trademark of Quadrant DSM Engineering Plastic Products.
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