Jiangsu Yubei Ceramics Co., Ltd.
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Large Diameter Alumina Ceramic Tube Al2O3 Ceramic Sleeve High Temperature Resistant
Alumina ceramic is the most widely used fine ceramics material. Alumina ceramic material has superb material characteristics such as high electrical insulation, high mechanical strength, high wear and chemical resistance, and excellent thermal stability, which makes it widely used in areas of high temperatures resistant required.
The industrial ceramics manufacturing process typically involves a number of stages. The process starts with preparing the raw materials for fabrication. Via pressing or molding methods, making the raw materials into green ceramic parts. Then firing or sintering them into shape using a chemical process. Finally, the ceramic is finished via different forms of polishing and glazing.
| Size | Customized |
| Material | 99% Al2O3 |
| Lead time | 30 days |
| Forming | Dry pressing or cold isostatic pressing |
| Processing | Precision grinding |
Specifications:
| Properties | Item | Unit | 99% Alumina | 95% Alumina |
| Mechanical Property | Color | -- | Light Yellow | White |
| Mechanical Property | Density | g/cm3 | 3.85 | 3.6 |
| Mechanical Property | Bending Strength | MPa | 310 | 300 |
| Mechanical Property | Compressive Strength | MPa | 2400 | 2300 |
| Mechanical Property | Elastic Modulus | GPa | 340 | 320 |
| Mechanical Property | Fracture Toughness | MPam1/2 | 3-4 | 3-4 |
| Mechanical Property | Weber Coefficient | m | 12 | 12 |
| Mechanical Property | Vickers Hardness | HV0.5 | 1600 | 1400 |
| Thermal Property | Coefficient of Line Thermal Expansion | 10-6K-1 | 7-8 | 7-8 |
| Thermal Property | Thermal Conductivity | W/mK | 29 | 20 |
| Thermal Property | Thermal Shock Resistance( in water) | ΔT℃ | 200 | 250 |
| Thermal Property | Max Working Temperature | ℃ | 1600 | 1500 |
| Electrical Property | Volume Resistance at 20℃ | Ωcm | >1014 | >1014 |
| Electrical Property | Dielectric Strength | V/m | 15X106 | 15X106 |
| Electrical Property | Dielectric Constant | εr | 10 | 9 |
99% Alumina Ceramic Tube