POLYIMIDE DIRECT-FORMED PARTS
DuPont™ Vespel® SP-21 parts and shapes provide low wear and friction for bearing, thrust washers, and dynamic seals. SP-21 is a graphite-filled polymer.
| Original Document | Technical Datasheet(English) | |||
| Features | Wear/Abrasion ResistanceLow Friction/Wear | |||
| Appearance | Parts/ Shapes | |||
| Physical | Value/Unit(Sign in to View) | Test Standard | Test Condition |
|---|---|---|---|
Density/Specific Gravity | *** g/cm³ | ASTM D792 | |
Water Absorption | ***~*** % | ASTM D570 | Equilibrium, 50% RH |
| Mechanical | Value/Unit(Sign in to View) | Test Standard | Test Condition |
Tensile Strength | |||
- | *** Mpa | ASTM D 1708 | 23 °C |
- | *** Mpa | ASTM D 1708 | 260 °C |
Tensile Elongation | |||
Break | *** % | ASTM D 1708 | 23 °C |
Break | *** % | ASTM D 1708 | 260 °C |
Flexural Modulus | *** Mpa | ASTM D790 | 23 °C |
Flexural Modulus | *** Mpa | ASTM D790 | 260 °C |
Flexural Strength | |||
- | *** Mpa | ASTM D790 | 23 °C |
- | *** Mpa | ASTM D790 | 260 °C |
Coefficient of Friction | *** - | Internal | PV = 0.875 MPa·m/s |
Coefficient of Friction | *** - | Internal | PV = 3.5 MPa·m/s |
Wear Rate | *** E-10 m/s | Internal | |
Compressive Modulus | *** Mpa | ASTM D 695 | 23 °C |
Compressive Strength | *** Mpa | ASTM D 695 | 0.1% offset, 23 °C |
Compressive Strength | *** Mpa | ASTM D 695 | 1% strain, 23 °C |
Compressive Strength | *** Mpa | ASTM D 695 | 10% strain, 23 °C |
| Thermal | Value/Unit(Sign in to View) | Test Standard | Test Condition |
Coefficient of Linear Thermal Expansion | |||
- | *** E-6/°C | ASTM D 696 | 23 °C to 260 °C |
Thermal Conductivity | *** W/m-°C | - | 40 °C |
Deformation | *** % | ASTM D621 | 50 °C, 14 MPa Load |
The information presented on this datasheet was acquired by AjiEng.com from the producer of the material. AjiEng.com makes substantial efforts to assure the accuracy of this data. However, AjiEng.com assumes no responsibility for the data values and strongly encourages that upon final material selection, data points are validated with the material supplier.
