Vespel® S polyimide family of parts and shapes with differing sets of attributes The Vespel® S Family of products are highly durable polyimides and are used in demanding applications where exceptional thermal resistance, low wear and/or low friction, strength and impact resistance are desired.
DuPont™ Vespel® SP-211 parts and shapes have a low coefficient of friction over a wide range of operating conditions. It exhibits low wear rates up to 300 °C (572 °F). SP-211 is a filled polymer.
| Gross Weight | Net Weight | Carton Each | Carton Length | Carton Weight | Carton Height |
|---|---|---|---|---|---|
| 0 | 0 | 0 |
| Property | Method | Unit | Value |
|---|---|---|---|
| Dissipation Factor at 102 Hz at 104 Hz at 106 Hz | D150 | — | — |
| Dielectric Strength, Short Time 2 mm Thick | D149 | MV/m | — |
| Volume Resistivity | D257 | Ω·m | — |
| Surface Resistivity | D257 | Ω | — |
| Dielectric Constant at 102 Hz at 104 Hz at 106 Hz | D150 | — | — |
| Property | Method | Unit | Value |
|---|---|---|---|
| Oxygen Index | D2863 | % | — |
| Specific Gravity | D792 | — | 1.55 |
| Water Absorption 24 h 48 h Equilibrium, 50% RH | D570 | % | 0.21 0.49 — |
| Property | Method | Unit | Value |
|---|---|---|---|
| Specific Heat | — | J/kg/°C | — |
| Deformation Under 14 MPa Load | D-621 | % | 0.13 |
| Thermal Conductivity | — | W/m·°C | 0.76 |
| Deflection Temperature at 2 MPa | D-648 | °C | — |
| Coefficient of Linear Expansion | D-696 | µm/m/°C (in/in/°F) | 54 (30) |
| Property | Method | Unit | Value |
|---|---|---|---|
| Flexural Strength | D-790 | MPa (kpsi) | 68.9 (10.0) 34.5 (5.0) |
| Poisson’s Ratio | — | — | — |
| Flexural Modulus | D-790 | MPa (kpsi) | 3102 (450) 1379 (200) |
| Compressive Stress at 1% strain at 10% strain at 0.1% offset | D-695 | MPa (kpsi) | 20.7 (3.0) 102.0 (14.8) 37.2 (5.4) |
| Axial Fatigue, Endurance Limit at 103 cycles at 107 cycles | — | MPa (kpsi) | — |
| Shear Strength | D-732 | MPa (kpsi) | — |
| Strain at Break | D-1708 or E8 † | % | 3.5 3.0 |
| Izod Unotched Impact Strength | D-256 | J/m | — |
| Compressive Modulus | D-695 | MPa (kpsi) | 2068 (300) |
| Tensile Strength | D-1708 or E8 † | MPa (kpsi) | 44.8 (6.5) 24.1 (3.5) |
| Izod Notched Impact Strength | D-256 | J/m | — |
| Flexural Fatigue, Endurance Limit at 103 cycles at 107 cycles | — | MPa (kpsi) | — |