Vespel® SP-1 Material Information
Specifications
| Physical Properties | Metric | English | Comments |
|---|---|---|---|
| Specific Gravity | 1.43 g/cc | 1.43 g/cc | ASTM D 792 |
| Water Absorption | 0.24% | 0.24% | Immersion 24h; ASTM D 570 |
| Water Absorption | 0.72% @Temp. 50.0°C | 0.72% @Temp. 122°F | Immersion 48h; ASTM D 570 |
| Moisture Absorption at Equilibrium | 1.0 – 1.3 % | 1.0 – 1.3 % | Equilibrium 50% RH; ASTM D 570 |
| Mechanical Properties | Metric | English | Comments |
|---|---|---|---|
| Hardness, Rockwell E | 45-60 | 45-60 | ASTM D 785 |
| Tensile Strength, Ultimate | 41.0 Mpa @Temp. 260°C | 5950 psi @Temp. 500°F | ASTM D 638 |
| Tensile Strength, Ultimate | 86.0 Mpa @Temp. 23°C | 12500 psi @Temp. 73.4°F | ASTM D 638 |
| Elongation at Break | 6.0 % @Temp. 260°C | 6.0 % @Temp. 500°F | ASTM D 638 |
| Elongation at Break | 7.5 % @Temp. 23°C | 7.5 % @Temp. 73.4°F | ASTM D 638 |
| Flexural Strength | 62.0 Mpa @Temp. 260°C | 8990 psi @Temp. 500°F | ASTM D 790 |
| Flexura Strength | 110 Mpa @Temp. 23°C | 16000 psi @Temp. 73.4°F | ASTM D 790 |
| Flexural Modulus | 1.723 Gpa @Temp. 260°C | 249.9 ksi @Temp. 500°F | ASTM D 790 |
| Flexural Modulus | 3.101 Gpa @Temp. 23°C | 449.8 ksi @Temp. 73.4°F | ASTM D 790 |
| Shear Strength | 90.0 MPa | 13100 psi | ASTM D 732 |
| Izod Impact, Notched | 0.427 J/cm @Temp. 23°C | 0.800 ft-lb/in @Temp. 73.4°F | ASTM D 256 |
| Izod Impact, Unnotched | 7.470 J/cm @Temp. 23°C | 13.99 ft-lb/in @Temp. 73.4°F | ASTM D 4812 |
| Electrical Properties | Metric | English | Comments |
|---|---|---|---|
| Volume Resistivity | 8.00e+16 ohm-cm | 8.00e+16 ohm-cm | ASTM D 257 |
| Surface Resistance | 4.00e+12 ohm | 4.00e+12 ohm | ASTM D 257 |
| Dielectric Constant – Frequency 1.00e+6 Hz | 3.66 @Temp. 23°C | 3.66 @Temp. 73.4°F | ASTM D 150 |
| Dielectric Constant – Frequency 10000 Hz | 3.73 @Temp. 23°C | 3.73 @Temp. 73.4°F | ASTM D 150 |
| Dielectric Constant – Frequency 100 Hz | 3.74 @Temp. 23°C | 3.74 @Temp. 73.4°F | ASTM D 150 |
| Dielectric Strength – 2 mm | 0.0787 in Thick | 24.6 kV/mm @Temp. 23°C | 625 kV/in @Temp. 73.4°F | Short time; ASTM D 149 |
| Dissipation Factor – Frequency 100 Hz | 0.0015 | 0.0015 | ASTM D 150 |
| Dissipation Factor – Frequency 1.00e+6 Hz | 0.005 | 0.005 | ASTM D 150 |
| Dissipation Factor – Frequency 10000 Hz | 0.0054 | 0.0054 | ASTM D 150 |
| Comparative Tracking Index | 175 – 249 V | 175 – 249 V | IEC 60112 |
| Thermal Properties | Metric | English | Comments |
|---|---|---|---|
| Deflection Temperature at 1.8 MPa (264 psi) | 360 °C | 680 °F | ASTM D 648 |
| UL RTI, Electrical | 130 °C @ 0.750 mm Thick | 266 °F @ 0.0295 in Thick | UL 746B |
| UL RTI, Electrical | 130 °C @ 1.70 mm Thick | 266 °F @ 0.0669 in Thick | UL 746B |
| UL RTI, Electrical | 130 °C @ 3.00 mm Thick | 266 °F @ 0.118 in Thick | UL 746B |
| UL RTI, Mechanical with Impact | 130 °C @ 1.70 mm Thick | 266 °F @ 0.0669 in Thick | UL 746B |
| UL RTI, Mechanical with Impact | 130 °C @ 0.750 mm Thick | 266 °F @ 0.0295 in Thick | UL 746B |
| UL RTI, Mechanical with Impact | 130 °C @ 3.00 mm Thick | 266 °F @ 0.118 in Thick | UL 746B |
| UL RTI, Mechanical without Impact | 130 °C @ 0.750 mm Thick | 266 °F @ 0.0295 in Thick | UL 746B |
| UL RTI, Mechanical without Impact | 130 °C @ 1.70 mm Thick | 266 °F @ 0.0669 in Thick | UL 746B |
| UL RTI, Mechanical without Impact | 130 °C @ 3.00 mm Thick | 266 °F @ 0.118 in Thick | UL 746B |
| Flammability, UL94 | V-0 @ 1.70 mm Thick | V-0 @ 0.0669 in Thick | IEC 60695-11-10 |
| Flammability, UL94 | V-0 @ 0.750 mm Thick | V-0 @ 0.0295 in Thick | IEC 60695-11-10 |
| Flammability, UL94 | V-0 @ 0.750 mm Thick | V-0 @ 0.0295 in Thick | UL94 |
| Flammability, UL94 | V-0 @ 1.70 mm Thick | V-0 @ 0.0669 in Thick | UL94 |
| Flammability, UL94 | V-0 @ 3.00 mm Thick | V-0 @ 0.118 in Thick | IEC 60695-11-10 |
| Flammability, UL94 | V-0 @ 3.00 mm Thick | V-0 @ 0.118 in Thick | UL94 |
| Flammability, UL94 | 5VA @ 0.750 mm Thick | 5VA @ 0.0295 in Thick | IEC 60695-11-20 |
| Oxygen Index | 53% | 53% | ASTM D 2863 |
NOTE: The information in this data sheet is for design guidance only. Forming methods and specific geometry could affect properties.
Overview
Vespel® polyimide materials provide continuous operation at cryogenic to high temperatures; low wear and low friction at high PV in lubricated or unlubricated environments; outstanding creep, strength, and impact resistance; exceptional dimensional stability; low thermal expansion; and easy machinability. It makes lighter weight parts not only practical, but, in many cases, better than standard metal, ceramics, and other engineering polymers. Material data provided by Dupont and Ensinger Plastics.
Applications & Usage
- Feed-Thru Insulators
- Spacers
- Cup Washers
- Wafer Cassette Guides
- Wafer Transfer Arms
- Chip Test Sockets
- Spline Couplings
- Aerospace Locking Fasteners
- High performance bearings, bushings, and valves
- Potable water applications
- Hydrocarbon, chemical and water service pumps
Industries Using This Material
- Semiconductor
- Energy
- Aerospace