PSU is a high temperature, amber colored, semi-transparent amorphous thermoplastic. Its properties remain relatively consistent over a wide temperature range. PSU is known for its toughness and stability at elevated temperatures. It is resistant to degradation from hot water and steam sterilization and has excellent chemical resistance to acidic salt solutions. It can be used as a superior replacement to polycarbonate or acrylic in specialty applications.
- Good Chemical Resistance：Resistance to aqueous acid and alkaline…
- High Dimensional Stability：The size change is under 0.1 % with exposure to hot water or steam.
- Excellent Radiation Stability against hot water and steam sterilization.
- Outstanding Hydrolytic Stability
- High Impact Resistance
- Superior Electrical Properties
analytical instrumentation, medical devices, aesthetic braces, dairy connectors, food pans, battery caps, oil pumps, oil control pistons, transmission parts, carburetor parts, bearing cages, ignition components, membranes…
| Item | Property | Test Method | Unit | Value |
|---|---|---|---|---|
| Physical | Density | ASTM D792 | g/cm3 | 1.24 |
| Water Absorption | ASTM D570 | % | 0.22 | |
| Rockwell Hardness | ASTM D785 | R scale | 120 | |
| Mechanical | Tensile Modulus | ASTM D638 | psi | 3.7 × 105 |
| Tensile Strength | ASTM D638 | psi | 10,500 | |
| Tensile Elongation | ASTM D638 | % | >10 | |
| Flexural Modulus | ASTM D790 | psi | 3.9 × 105 | |
| Flexural Strength | ASTM D790 | psi | 15,000 | |
| Izod Impact | ASTM D256 | ft-lb/in | 1.0 | |
| Thermal | Vicat Softening Point | ASTM D648 | °C/°F | 185 / 365 |
| Heat Deflection Temperature at 264 psi | ASTM D648 | °C/°F | 174 / 345 | |
| Flammability | UL94 | - | V-1 | |
| Electrical | Electrical Volume Resistivity | ASTM D257 | Ω-cm | >1015 |
| Surface Resistivity | ASTM D257 | Ω / sq | 3 × 1016 | |
| Dielectric Constant | ASTM D150 | 1 MHz | 3.0 | |
| Dissipation Factor | ASTM D150 | 1 MHz | 0.003 | |
| Dielectric Strength | ASTM D149 | V/mm | 1.67 × 104 | |