High Purity Alumina
High Purity Alumina Series Products
High Purity Alumina
HPA / High Purity Aluminum Oxide
High Purity Alumina manufactured by the improved Bayer process is widely used in high-end industries and cutting-edge science and technologies with its good chemical stability, high melting point, high mechanical strength, high hardness, good thermal conductivity and high insulation, such as new energy battery materials, sapphire, ruby, technical ceramics, ceramic substrate, spraying materials, photoelectric glass, semiconductor devices, insulators, power equipment manufacturing.
Specification Details
| Typical Properties | Units | 4N5G-40B | 4N5G-D2 (milled) | 4N5A-40B | 4N5A-D5 (milled) |
|---|---|---|---|---|---|
|
Crystal Structure |
|
γ |
γ |
α |
α |
|
Average Particle Size (by Bettersize Laser 9300SE) |
D50, um |
30-40 |
1-3 |
30-40 |
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) ≥ |
% |
99.995 |
99.995 |
99.995 |
99.995 |
|
Impurity ≤ (by ICP-OES) |
|
|
|
|
|
|
Na |
ppm |
30 |
30 |
30 |
30 |
|
Ca |
ppm |
1 |
1 |
1 |
1 |
|
Mg |
ppm |
1 |
1 |
1 |
1 |
|
Fe |
ppm |
1 |
1 |
1 |
1 |
|
Si |
ppm |
17 |
17 |
17 |
17 |
|
Ti |
ppm |
1 |
1 |
1 |
1 |
|
Cu |
ppm |
1 |
1 |
1 |
1 |
|
Packing (As per customer’s requests) |
drum |
25kg |
20kg |
25kg |
25kg |