99.9% Alumina Powder
High Purity Alumina Series Products
99.9% Alumina Powder
99.9% Alumina Powder is divided into low-temperature sintered high-purity γ-type alumina and high-temperature sintered high-purity α-type alumina. It has excellent electrical insulation properties, low loss tangent, high mechanical strength, satisfactory chemical stability and high temperature resistance, high thermal conductivity, good stability and high cost performance. It can be used as electronic ceramic substrates, insulating ceramics, Special raw materials for liquid crystal glass, cover glass, refractory materials, luminescent materials and other industries.
Specification Details
| Typical Properties | Units | 3NG-20B | 3NG-D2 (milled) | 3NA-20B | 3NA-D5 (milled) |
|---|---|---|---|---|---|
Crystal Structure | γ | γ | α | α | |
Average Particle Size (by Bettersize Laser 9300SE) | D50, um | 15-25 | 1-3 | 15-25 | 3-5 |
Loose Bulk Density | g/cm3 | 0.55-0.65 | 0.30-0.40 | 0.70-0.80 | 0.50-0.60 |
BET Surface Area | m2/g | 45-55 | 60-70 | ≤5 | ≤5 |
Purity (Al2O3) ≥ | % | 99.9 | 99.9 | 99.9 | 99.9 |
Impurity ≤ (by ICP-OES) | |||||
Na | ppm | 100 | 100 | 100 | 100 |
Ca | ppm | 100 | 100 | 100 | 100 |
Mg | ppm | 30 | 30 | 30 | 30 |
Fe | ppm | 50 | 50 | 50 | 50 |
Si | ppm | 50 | 50 | 50 | 50 |
Ti | ppm | 20 | 20 | 20 | 20 |
Cu | ppm | 20 | 20 | 20 | 20 |
Packing (As per customer’s requests) | drum | 25kg | 20kg | 25kg | 25kg |