Synthetic AL2O3 Sapphire Crystal Sapphire Glass Tube and Pipe
Sapphire’s Mohs hardness is 9 (diamond is 10). It […]
Sapphire’s Mohs hardness is 9 (diamond is 10). It is the hardest material next to diamonds. Until now, it’s nearly impossible to make a diamond tube as costing, difficulty processing. But Xinkehui New Material can produce a sapphire tube with OD/ID polishing to optical grade.
Comparing with traditional quartz tubes, Xinkehui New Material sapphire tubes are the best high-pressure containers and transparent plumbing for many high-pressure systems. A sapphire tube can handle extreme pressures while allowing for safe observation and spectral analysis of fluids and gas. Sapphire tubes can be used in hostile environments to house sensitive sensors, protecting the sensors against pressure and mechanical abuse.
| GENERAL | ||
| Chemical Formula | Al2O3 | |
| Crystal Stucture | Hexagonal System (hk o 1) | |
| Unit Cell Dimension | a=4.758 Å,Å c=12.991 Å, c:a=2.730 | |
| PHYSICAL | ||
| Metric | English (Imperial) | |
| Density | 3.98 g/cc | 0.144 lb/in3 |
| Hardness | 1525 – 2000 Knoop, 9 mhos | 3700° F |
| Melting Point | 2310 K (2040° C) | |
| STRUCTURAL | ||
| Tensile Strength | 275 MPa to 400 MPa | 40,000 to 58,000 psi |
| Tensile Strength at 20° C | 58,000 psi (design min.) | |
| Tensile Strength at 500° C | 40,000 psi (design min.) | |
| Tensile Strength at 1000° C | 355 MPa | 52,000 psi (design min.) |
| Flexural Stength | 480 MPa to 895 MPa | 70,000 to 130,000 psi |
| Compression Strength | 2.0 GPa (ultimate) | 300,000 psi (ultimate) |
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