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 Abrasives 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 – 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 client’s special requirement. |
