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AP-17H

This type of Brown Fused Aluminium grain is made from Ap-17, it is calcined at 1000oC-1300oC, the grit inside crack will be well repaired after heating, the toughness also will be improved after heating. Then the grits will be well washed and carefully sieving again to kicked off the needle and flake shape . It is used for making high quality Coated Abrasive products like abrasive waterproof paper, sanding cloth, sanding belt, flap wheel and so on.
Typical Chemical Analysis
Al2O3 Fe2O3 TiO2 SiO2 CaO MgO
95.68% 0.08% 2.45% 0.67% 0.20% 0.18%
Physical Properties
Color Blue
Shape Sharp
Crystal Form Alpha-alumina trigonal system
True Specific Gravity
 3.96 g/cm3
Hardness
 2090 Knoop scale; 9.0 Mohs scale
Melting Temperature About 2050 oC
Magnetic Material 0.0076%
Hydrophile 124mm
Cleanness 24ppm
Toughness 80.26
Bulk Density Test Value (g/cm3)
Grit No P12
P16 P20 P24 P30 P36 P40 P50
B.D 1.66 1.89 1.86 1.82 1.79 1.77 1.75 1.93
Grit No P60 P80 P100
P120 P150 P180 P220  
B.D 1.73 1.69 1.64 1.61 1.59 1.58 1.56  
Grit Size Available (P)
12 16 20 24 30 36 40 50 60 80 100 120 150 180 220
240 280 320 360 400 500 600 800 1000 1200 1500 1800 2000 2500  
Particle Size Distribution (PSD)
According to FEPA ¨C Standard 43-1984 R 1993
Packing Way Selection
a. In 25kg plastic woven bags.
b. In 1000kg big bag.
c. 40 x 25kg plastic woven bags in one big bag.
d. 40 x 25kg plastic woven bags on pallet.
e. 40 x 25kg paper bags on pallet.
f. According to clientĄ¯s special requirement.
Products Standard
Size Distribution of Microgrits P12~P220
Size Distribution of Microgrits P240~P1200
Size Distribution of Microgrits P1500~P2500