| Diameter[直径] | 3.18mm |
| Quantity[数量] | 50 Piece - 2500 Piece |
| Sphericity[球面] | 25μm |
| Type[类型] | Precision Sphere |
| Electrical Properties(电气特性) |
| Dielectric constant @1MHz | 2 - 3 |
| Dielectric strength ( kV mm⁻¹ ) | 30.0 - 40.0 |
| Dissipation factor @ 1MHz | 0.0003 - 0.0005 |
| Surface resistivity ( Ohm/sq ) | 10¹³ |
| Volume resistivity ( Ohmcm ) | 10¹⁶-10¹⁸ |
| Mechanical Properties(机械性能) |
| Abrasive resistance - ASTM D1044 ( mg/1000 cycles ) | 13 - 16 |
| Coefficient of friction | 0.10 - 0.30 |
| Elongation at break ( % ) | 150.0 -300.0, for biax film >50 |
| Hardness - Rockwell | R80-100 |
| Izod impact strength ( J m⁻¹ ) | 20.0 - - 100.0 |
| Tensile modulus ( GPa ) | 0.90 - 1.50 , for biax film 2.2-4.2 |
| Tensile strength ( MPa ) | 25.00 - 40.00 , for biax film 130-300, |
| Chemical Resistance(耐化学性) |
| Acids - concentrated | Good-Fair |
| Acids - dilute | Good-Fair |
| Alcohols | Good |
| Alkalis | Good |
| Aromatic hydrocarbons | Fair |
| Greases and Oils | Good-Fair |
| Halogenated Hydrocarbons | Good-Poor |
| Halogens | Poor |
| Ketones | Good |
| Physical Properties(物理性质) |
| Density ( g cm⁻³ ) | 0.900 |
| Flammability | HB |
| Limiting oxygen index ( % ) | 18 |
| Radiation resistance | Fair |
| Refractive index | 1.490 |
| Resistance to Ultra-violet | Poor |
| Water absorption - equilibrium ( % ) | 0.03 |
| Thermal Properties(热性能) |
| Coefficient of thermal expansion ( x10⁻⁶ K⁻¹ ) | 100.000 - 180.000 |
| Heat-deflection temperature - 0.45MPa ( C ) | 100 - 105 |
| Heat-deflection temperature - 1.8MPa ( C ) | 60.0 - 65.0 |
| Lower working temperature ( C ) | - -10 - -60 |
| Specific heat ( J K⁻¹ kg⁻¹ ) | 1700.0 - 1900.0 |
| Thermal conductivity ( W m⁻¹ K⁻¹ ) | 0.10 - 0.22 @23℃ |
| Upper working temperature ( C ) | 90 - 120 |
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