| Customization: | Available |
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| Classification: | High-Alumina |
| Feature: | Long Time Materials |
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Alumina ceramic crucibles are widely used in coal analysis, metal analysis and melting, chemical raw material analysis and firing, glass analysis and melting, rare earth and other raw materials and minerals analysis and firing, ceramics and other high-temperature products firing, single Crystal raw materials melting and other industries.
Alumina crucibles represent a cost-effective alternative to certain other materials when heat resistance and corrosion resistance are essential. Specifically, alumina offers:
High-alumina Crucibles Various Sizes, Materials Physical and Chemical Index, different technique datas of different alumina percentage
Materials Physical and Chemical Index
| Item | Unit | AL99.7% | AL99 | AL95 |
| Al2O3 content | - | 99.7% | 99% | 95% |
| Color | - | Ivory white | Ivory white | Ivory white,white |
| Air tightness | - | airtight | airtight | airtight |
| Density | g/cm3 | 3.94 | 3.8 | 3.7 |
| Straightness | - | 2‰ | 2‰ | 2‰ |
| hardness | Moh's hardness | 9 | 9 | 8.8 |
| Water absorption | ≤0.2 | ≤0.2 | ≤0.2 | ≤0.2 |
| Flexural strength(20ºC) | Mpa | 375 | 340 | 304 |
| Compressive strength(20ºC) | Mpa | 2300 | 2210 | 1910 |
| Thermal expansion coefficient (25ºC-800ºC) | 105/ºC |
7.6 | 7.6 | 7.6 |
| Insulation strength(thickness:5mm) | AC-kv/mm | 10 | 10 | 10 |
| Dielectric loss 25ºC@1MHz | - | <0.0001 | <0.0006 | <0.0004 |
| Volume resistivity (20ºC) (300ºC) |
Ω·cm3 |
>1014 >1010 |
>1014 >1010 |
>1014 >1012 |
| Long-term use temperature | ºC | 1700 | 1600 | 1200 |
| Thermal conductivity(25ºC) | W/moK | 35 | 34 | 20 |
Alumina Ceramic Crucibles Capacity: 5-1500ml, maximum capacity can be customized.
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