Tabular Alumina is produced by sintering ball-formed calcined alumina at a temperature just under the 2040°C fusion point of aluminum oxide. This recrystallizes the normally flat crystals into hexagonal, elongated tablet-shaped crystals up to 400 microns in size. It is possible to convert nearly 100% of the crystals and achieve extremely high chemical purity while maintaining the same hardness and density. It provides high temperature resistance, thermal and chemical stability, abrasion resistance, high mechanical strength and excellent shock resistance.
Get A QuoteTabular Alumina is produced by sintering ball-formed calcined alumina at a temperature just under the 2040°C fusion point of aluminum oxide. This recrystallizes the normally flat crystals into hexagonal, elongated tablet-shaped crystals up to 400 microns in size. It is possible to convert nearly 100% of the crystals and achieve extremely high chemical purity while maintaining the same hardness and density. It provides high temperature resistance, thermal and chemical stability, abrasion resistance, high mechanical strength and excellent shock resistance.
|
item |
value |
|
CAS No. |
|
|
Other Names |
Tabular alumina |
|
Grade Standard |
Agriculture Grade, Electron Grade, Food Grade, Industrial Grade, Medicine Grade, Reagent Grade |
|
Purity |
99% |
|
Appearance |
ColorWhite |
|
Size |
2-5mm 3-6mm |
|
Apparent porosity |
5 max |
|
Water absorption |
1.5 |
|
Volume density |
3.5g/cm3 |
|
Sample |
Sample Provided |
|
SiC Content (%) |
max 0.01% |
|
CrO Content (%) |
max 0.01% |
|
Refractoriness (Degree) |
1770°< Refractoriness< 2000° |
|
CaO Content (%) |
max 0.04% |
|
MgO Content (%) |
max 0.05% |
| Property | Value |
|---|---|
| Specific gravity | 3.96 g/cm3 |
| Bulk density | 3.45-3.5g/cm3 |
| Apparent porosity | 2-5% |
| Water absorption rate | 0.7-1.5% |
| Mohs' Hardness | 9.0 |
| Knoop hardness | 2000kg/cm3 |
| Thermal conductivity | (100°C)0.069 cal/sec cm°C |
| Heat capacity | (20°C)0.21 cal/gm/(100°C) |
| Melting temperature | 2050°C |
| Max. service temperature | min 1800°C |
| Refractive Index | 1.76 |
| Appearance | White granules or powder |
| Index | AL2O3 | SiO2 | Fe2O3 | Na2O |
|---|---|---|---|---|
| Guarantee Value | min 99.2 | max 0.18 | max 0.1 | max 0.4 |
| Typical Value | 99.45 | 0.05 | 0.02 | 0.32 |
| Index | Bulk density(g/cm3) | Porosity(%) | Water absorption rate(%) |
|---|---|---|---|
| Guarantee Value | min 3.5 | max 5.0 | max 1.5 |
| Typical Value | 3.56 | 2.35 | 0.72 |
| Size:mm | Distribution | Typical Values % | MAX/MIN % |
|---|---|---|---|
| 5-10mm | 5-10mm | 92 | 75 |
| 7-10mm | 7-10mm | 58 | 40 |
| 5-7mm | 5-7mm | 35 | 20 |
| 3-6mm | 3-6mm | 98 | 90 |
| 4-6mm | 4-6mm | 55 | 40 |
| 3-4mm | 3-4mm | 44 | 20 |
| 1-3mm | 1-3mm | 99 | 90 |
| 2-3mm | 2-3mm | 52 | 30 |
| 1-2mm | 1-2mm | 47 | 30 |
| +2.36mm | +2.36mm | 8 | 10 |
| -1mm | -1mm | 5 | 10 |
| 0.5-1mm | 0.5-1.18mm | 95 | 90 |
| 0.7-1.18mm | 0.7-1.18mm | 45 | 35 |
| 0.5-0.7mm | 0.5-0.7mm | 50 | 20 |
| 0.2-0.6mm | +0.6mm | 5 | 10 |
| -0.2mm | -0.2mm | 4 | 10 |
| 0-0.5mm | 0-0.5mm | 95 | 90 |
| 0.15-0.5mm | 0.15-0.5mm | 49 | 38 |
| -200# | +0.088mm | 0.3 | 3 |
| -0.044mm | -0.044mm | 96 | 90 |
| -325# | -0.044mm | 97 | 85 |
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