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Alumina ( Al2O3 Alpha-form)

Type Specification Chemical Composition Physical Characteristics
Al2O3 % Na2O % SiO2 % Fe2O3 % α-Al2O3% True density g/cm3 Crystal Particle Size μm Specific Surface Area m2/g D50 μm/Mesh
Calcined α-Alumina with Low Soda, Original Powder 
AL-10 A5113 ≥99.5 0.1 0.03 0.02 95 3.95 1 2.2 150-180 mesh
AL-20 A6032 ≥99.6 0.07 0.03 0.02 96 3.96 3 1.2 150-180 mesh
AL-40 A7041 ≥99.6 0.05 0.03 0.02 97 3.97 4 1  150-180 mesh
Calcined α-Alumina with Low Soda, Micropowder 
AL-1G A5113G1 ≥99.3 0.1 0.15 0.02 95 3.95 1 2.6 1.5±0.5μm
AL-3G A6032G3 ≥99.5 0.07 0.13 0.02 96 3.96 3 1.8 3±0.5μm
AL-5G A7042G5 ≥99.5 0.05 0.1 0.02 97 3.97 4 1.2 5±0.5μm
Use: spark plug, electronic substrates, electronic ceramics board, advanced refractory materials etc
Calcined α-Alumina with Medium Soda, Original Powder 
AM-30 A3224 ≥99.5 0.18 0.03 0.02 93 3.93 2 3.5 150-180 mesh
AM-40 A5234 ≥99.5 0.15 0.03 0.02 95 3.95 3 3.5 150-180 mesh
Calcined α-Alumina with Medium Soda, Micropowder 
AM-3G A3224G2 ≥99.2 0.18 0.15 0.03 93 3.93 2 3.5 3±0.5μm
AM-4G A5234G4 ≥99.3 0.15 0.15 0.03 95 3.95 3 3.5 4±0.5μm
Use: engineering ceramics, refractory parts etc
Calcined α-Alumina with Ordinary Soda, Original Powder
AP-30 A3314 ≥99.5 0.28 0.03 0.02 93 3.93 1 3.5 150-180 mesh
AP-40 A5324 ≥99.5 0.25 0.03 0.02 95 3.95 2 3.5 150-180 mesh
Calcined α-Alumina with Ordinary Soda, Micropowder 
AP-1G A3314Gl ≥99.0 0.28 0.2 0.02 93 3.93 1 3.5 1±0.5μm
AP-2G A3314G2 ≥99.2 0.28 0.15 0.02 93 3.93 1 3.5 2±0.5μm
AP-3G A3314G4 ≥99.3 0.25 0.1 0.02 95 3.95 2 3.5 4±0.5μm
Use: refractory materials, grind porcelain, engineering ceramics etc
Packing: 25Kg/50Kg/1000Kg bags)
Remarks: Particle size (D50) to be controlled according to the requirements. If you will have any special requirement about specifications, please inform us so as to meet your demands.