Alumina smelting ceramic crucible 1.Al2O3>=99.7% 2.Density,3.85g/cm3 3.Flexural strength, 360Mpa 4.Max. temp.1800
Best quality high temperature resistant alumina smelting ceramic crucible
Features:
1. High purity, (Al2O3≥99.7%; Fe2O3≤0.1%; SiO2≤0.2%.)
2. High chemical etching resistance,
3. Temperature tolerance, 1600°C for long term application; 1800°C for short term application,
4. Resistant to sudden cold and hot, un-explosive,
5. High density of slip casting.
Physical Character:
| TYPICAL PHYSICAL PROPERTIES | ||||||||
| AL2O3 %Composition | 60 | 75 | 80 | 85 | 92 | 95 | 99 | 99.8 |
| Densityg/cm3 | 3.0 | 3.1 | 3.3 | 3.4 | 3.6 | 3.7 | 3.81 | 3.91 |
| Flexural Strength(MPa) | 205 | 280 | 215.7 | 230 | 312 | 304 | 340 | 370 |
| Thermal Expansion(×10-6/)25-800 | 7.1 | 7.6 | 7.6 | 7.6 | 7.5 | 7.3 | 7.6 | 7.6 |
| Thermal Conductivity[w/(m.R)] | 16 | 17 | 17 | 17 | 18 | 20 | 34 | 35 |
| Dielectric Strength (KV/mm) | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 |
| Resistivity (Ω.cm)20 | 1014 | 1014 | 1014 | 1014 | 1014 | 1014 | 1014 | 1014 |
| 300 | 1013 | 1013 | 1013 | 1013 | 1013 | 1012 | 1010 | 1010 |
| Max Service Temp. | 1350 | 1100 | 1300 | 1350 | 1500 | 1600 | 1700 | 1800 |
| Hardness (Moh'sscale) | 7.5 | 7.5 | 7.5 | 7.5 | 8.5 | 8.8 | 9 | 9 |
| 1800 | 1700 | 1800 | 1850 | 1920 | 2000 | 2030 | 2040 | |
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Best quality high temperature resistant alumina smelting ceramic crucible
