Alumina Powder for Ceramic

Grade PKJ 30 PKU 998MF PKU 998G PM D99*
Appearance White Powder White Powder White Powder White Powder
Purity (%) 99.7 99.99 99.99 99
Crystal From α α α α
Surface Area, BET (m²⁄g) 5.17-5.20 6±2 6-9 5.1-5.2
Average Particle Size 0.45-0.55 0.6±0.2 0.6±0.2 0.45-0.55
Fired Temperature (°C) 1480 1560 1680 1630
Green Denisty (g⁄cm³) - To be tested To be tested 2.10-2.20
Fired Density (g⁄cm³) - To be tested To be tested 3.90-3.92
Impurities Si 0.05% 18 ppm 18 ppm 0.05%
Fe 0.03% 30 ppm 30 ppm 0.03%
Na 0.075% 25 ppm 25 ppm 0.075%
K 0.005% 5 ppm 6 ppm 0.005%
Ca - 6 ppm 15 ppm -
Mg - 3 ppm 5 ppm 0.5%
*:With additives,without binder.This product is suitable for the subsequent Spray-Drying Process.



Alumina Powder for Ceramic(RTP)

Grade PKJ 95 PKJ 99A PKJ 99.5X
Appearance White Powder White Powder White Powder
Purity (%) 95 99 99.5
Crystal From α α α
Surface Area, BET (m²⁄g) - - -
Average Particle Size 80-200 mesh 80-200 mesh 80-200 mesh
Fired Temperature (°C) 1560 1630 1650
Green Denisty (g⁄cm³) 2.25-2.35 2.20-2.30 2.20-2.30
Fired Density (g⁄cm³) 3.65-3.68 3.90-3.92 3.92-3.94
Impurities (≤ ppm) Si 0.04 0.05 0.04
Fe 0.03 0.03 0.03
Na 0.045 0.075 0.075
K 0.005 0.005 0.005
Ca - - -
Mg - - -