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