| Diameter[直径] | 25.4mm |
| Grade[等级] | Vespel® SP1 |
| Length[长度] | 25mm - 200mm |
| Chemical Resistance(耐化学性) |
| Acids - concentrated | Poor |
| Acids - dilute | Fair |
| Alcohols | Poor |
| Alkalis | Poor |
| Aromatic hydrocarbons | Good |
| Greases and Oils | Good |
| Halogenated Hydrocarbons | Good |
| Halogens | Fair |
| Ketones | Good |
| Thermal Properties(热性能) |
| Coefficient of thermal expansion ( x10⁻⁶ K⁻¹ ) | 30.000 - 60.000 |
| Heat-deflection temperature - 1.8MPa ( C ) | 360.0 |
| Lower working temperature ( C ) | -270 |
| Specific heat ( J K⁻¹ kg⁻¹ ) | 1090.0 |
| Thermal conductivity ( W m⁻¹ K⁻¹ ) | 0.10 - 0.35 @23℃ |
| Upper working temperature ( C ) | 250 - 320 |
| Electrical Properties(电气特性) |
| Dielectric constant @1MHz | 3 |
| Dielectric strength ( kV mm⁻¹ ) | 22.0 |
| Dissipation factor @ 1kHz | 0.0018 |
| Surface resistivity ( Ohm/sq ) | 10¹⁶ |
| Volume resistivity ( Ohmcm ) | 10¹⁸ |
| Mechanical Properties(机械性能) |
| Coefficient of friction | 0.42 |
| Elongation at break ( % ) | 8.0 -70.0 |
| Hardness - Rockwell | E52-99 |
| Izod impact strength ( J m⁻¹ ) | 80.0 |
| Tensile modulus ( GPa ) | 2.00 - 3.00 |
| Tensile strength ( MPa ) | 70.00 - 150.00 |
| Physical Properties(物理性质) |
| Density ( g cm⁻³ ) | 1.420 |
| Flammability | V-0 |
| Limiting oxygen index ( % ) | 53 |
| Radiation resistance | Good |
| Refractive index | 1.660 |
| Resistance to Ultra-violet | Poor |
| Water absorption - over 24 hours ( % ) | 0.200 - 2.900 |
