Black Fused Alumina has good features as high hardness, strong tenacity, better bonding ability and hydrophilicity, giving less heat, good self-sharpening, smooth surface and high finishing. It’s suitable for polishing various spare parts such as: bicycles, sewing-machine, hard metal tools, medical apparatus, time pieces, glass products and stone grinding. It’s also the right material for making abrasive tools: fiber- reinforced cutting wheels, grinding wheels, sand cloth, paper and paste.
| Chemical Composition (% by weight) | ||||
| Range of Grits | Chemical Composition | |||
| Al2O3 | SiO2 | Fe2O3 | TiO2 | |
| 24#- 100# | 77.00 min | 11.0 min | 5.0 min | 1.5-3.5 |
| 120#-200# | 75-81 | 9- 12 | 4-6 | 2-3 |
| 240#-280# | 64.0 min | 10.0 min | 7.0 min | 1.5-3.0 |
Available Sizes
| Grit
No. |
Micron | Grit
No. |
Micron | Grit
No. |
Micron | Grit
No. |
Micron |
| 12 | 2000 ~ 1700 | 24 | 850 ~ 710 | 54 | 355 ~ 300 | 100 | 150 ~ 125 |
| 14 | 1700 ~ 1400 | 30 | 710 ~ 600 | 60 | 300 ~ 250 | 120 | 125 ~ 106 |
| 16 | 1400 ~ 1180 | 36 | 600 ~ 500 | 70 | 250 ~ 212 | 150 | 106 ~ 75 |
| 20 | 1180 ~ 1000 | 40 | 500 ~ 425 | 80 | 212 ~ 180 | 180 | 90 ~ 63 |
| 22 | 1000 ~ 850 | 46 | 425 ~ 355 | 90 | 180 ~ 150 | 220 | 75~53 |
Other sizes can be also available on request.
Packing
25 kgs or 50kgs packed in three layers bag, or can be packed on request.
