AL is a white fused aluminum oxide obtained from the fusion of calcined alumina in electric arc furnaces. AL presents high purity and high capacity of edge reposition. AL is recommended for special 

applications where contamination is an issue to be considered. 

TYPICAL CHEMICAL ANALYSIS 

Al2O3 99.42%

Fe2O3 0.03

Na2O 0.43

TYPICAL PHYSICAL PROPERTIES 

Crystal Structure: -alumina 

Knoop 100 Hardness: 1900 kg/cm2

Toughness: 38% (ANSI-B74.8 R2007)

Specific Gravity: 3.94 g/cc

BULK DENSITY (g/cc)

Grit Size R HD Grit Size R HD

10 1.74 - 1.84 1.81 - 1.91 50 1.68 - 1.78 1.75 - 1.85

12 1.74 - 1.84 1.81 - 1.91 60 1.67 - 1.77 1.73 - 1.83

14 1.74 - 1.84 1.81 - 1.91 70 1.62 - 1.72 1.73 - 1.83

16 1.73 - 1.83 1.80 - 1.90 80 1.61 - 1.71 1.73 - 1.83

20 1.72 - 1.82 1.79 - 1.89 90 1.58 - 1.68 1.69 - 1.79

24 1.72 - 1.82 1.79 - 1.89 100 1.57 - 1.67 1.73 - 1.83

30 1.72 - 1.82 1.79 - 1.89 120 1.55 - 1.65 1.73 - 1.83

36 1.71 - 1.81 1.78 - 1.88 150 1.52 - 1.62 1.70 - 1.80

40 1.70 - 1.80 1.77 - 1.87 180 1.52 - 1.62 1.70 - 1.80

46 1.70 - 1.80 1.77 - 1.87 220 1.48 - 1.58 1.70 - 1.80