Squares, rectangles and discs of non-standard sizes available to special order.
| 订货号 | 包装规格 |
| Disc |
| 807-833-98 | 20mm |
产品参数
| Diameter[直径] | 20mm |
| Orientation[定向/导向] | Not Identified |
| Polish[抛光] | 0.05 - 0.1μm Ra |
| Surface Finish[表面光洁度] | Polished On Both Sides |
| Thickness[厚度] | 2mm |
| Type[类型] | Single Crystal |
| Pultrusion(挤拉成型) |
| Compressive strength ( MPa ) | 2100 |
| Mechanical Properties(机械性能) |
| Hardness - Knoop ( kgf mm⁻² ) | 2000 |
| Hardness - Vickers ( kgf mm⁻² ) | 1600 - 1800 |
| Tensile modulus ( GPa ) | 350.00 - 390.00 |
| Tensile strength ( MPa ) | 250.00 - 400.00 |
| Thermal Properties(热性能) |
| Coefficient of thermal expansion ( x10⁻⁶ K⁻¹ ) | 5.800 @20-1000℃ |
| Melting point ( C ) | 2050.00 |
| Specific heat ( J K⁻¹ kg⁻¹ ) | 750.0 @25℃ |
| Thermal conductivity ( W m⁻¹ K⁻¹ ) | 35.00 - 40.00 @20℃ |
| Upper continuous use temperature ( C ) | 1800 - 1950 |
| Chemical Resistance(耐化学性) |
| Acids - concentrated | Good |
| Acids - dilute | Good |
| Alkalis | Good |
| Halogens | Good |
| Metals | Good |
| Physical Properties(物理性质) |
| Apparent porosity ( % ) | 0.00 |
| Density ( g cm⁻³ ) | 3.985 |
| Refractive index | 1.710-1.790 |
| Useful optical transmission range | 200 - 5500 nm |
| Electrical Properties(电气特性) |
| Dielectric constant | 7.5 - 11.5 |
| Dielectric strength ( kV mm⁻¹ ) | 15.0 - 50.0 |
| Volume resistivity ( Ohmcm ) | >10¹⁴@25℃ |
其他参数
公差
| 长度 | <100mm | ±1mm |
|---|
| ≥100mm | +2% / -1% |
| 直径 | <100mm | ±1mm |
|---|
| ≥100mm | +2% / -1% |
| 厚度 | | ±10% |
|---|
| 陶瓷 | ±20% |
| 复合材料 | ±20% |
| 聚合物 | ±20% |
| 长度 1 | <100mm | ±1mm |
|---|
| ≥100mm | +2% / -1% |
| 长度 2 | <100mm | ±1mm |
|---|
| ≥100mm | +2% / -1% |
