.Basic Information Of Synthetic Sapphire
For Your Better Understanding of Synthetic Sapphire, We supply the basic properties of our materials.Please check the below Form and the properties for Sapphire material :
Basic Properties Of Synthetic Sapphire |
|
| Properties | Index |
| Chemical Formula: | Al2O3 |
| Optical Index Of Refraction: | No:1.768/ Ne:1.760 @589.3nm |
| Compressive Strength: | 300,000 PSI |
| Flexural Strength : | 100,000 PSI |
| Tensile Strength: | 58,000 PSI |
| Mohs Hardness: | 9 Grade |
| Maximum Temperature (Continuous): | 2000℃ |
| Coefficient Of Expansion-Perpendicular to C-axis: | 4.3x10-6/℃ |
| Coefficient Of Expansion-Parallel to C-axis: | 5.4x10-6/℃ |
| Conductivity: | 46w/mk |
| Specific Heat (0~100℃）: | 0.16cal/g℃ |
.Advantages Of Synthetic Sapphire
Please check the following list of competitions between sapphire and other optical materials .
| Basic Specifications Of Common Optical Materials | ||||||
Properties/Name |
B270 | CaF2 | Ge | N-BK7 | Fuzed Silica | Sapphire |
Refractive index (nd) |
1.523 | 1.434 | 4.003 | 1.517 | 1.458 | 1.768 |
| Coefficient of dispersion (Vd) | 58.5 | 95.1 | N/A | 64.2 | 67.7 | 72.2 |
Density(g/cm3) |
2.55 | 3.18 | 5.33 | 2.46 | 2.2 | 3.97 |
TCE(μm/m℃) |
8.2 | 18.85 | 6.1 | 7.1 | 0.55 | 5.3 |
| Soften Temperature(℃) | 533 | 800 | 936 | 557 | 1000 | 2000 |
| Knoop hardness(kg/mm2) | 542 | 158.3 | 780 | 610 | 500 | 2200 |
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