| Customization: | Available |
|---|---|
| Feature: | Long Time Materials |
| Refractoriness (℃): | 1770< Refractoriness< 2000 |
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Alumina ceramic crucibles (or corundum crucible, aluminum oxide >99%) . Highly resistant to chemical attack. Recommended for chemists, metallurgists and others involved in high temperature work demanding contamination free results. High temperature resistance,1600C in long time use,1800C in short time.
Alumina Ceramic Crucibles Capacity: 5-1500ml, maximum capacity can be customized.
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 |
Excellent performance of our alumina ceramic products:
1.Excellent performance of high temperature resistance
2.Excellent performance of wear resistance
3.Stable chemical properties
4.High degree of corrosion resistance
5.Super high insulativity
6.High mechanical strength
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