Pink fused alumina A98
Artificial pink corundum is produced by melting aluminum oxide together with chromium oxides in electric arc furnaces. Compared to white corundum, pink corundum alloyed with chromium has a significantly higher hardness. Corundum alloyed with chromium is characterized by a longitudinal grain shape with sharp edges and a stable specific gravity. Thanks to the perfect washing in water, the grains are clean, they have a bright pink color.
Application
Recyclable blasting media
Grinding, lapping, polishing
Processing hard metals and alloys
Blasting of hard stainless materials
Ceramic grinding wheels
Packaging:
In 25 kg bags or 1t / big bag
Pressure blast machines
Injector blast machines
Sorting
Available sizes FEPA makro (µm)
FEPA | Average gain size | FEPA | Average gain size | |
|---|---|---|---|---|
F-8 | 2800-2000 | F-46 | 425-300 | |
F-10 | 2360-1700 | F-54 | 355-250 | |
F-12 | 2000-1400 | F-60 | 300-212 | |
F-14 | 1700-1180 | F-70 | 250-180 | |
F-16 | 1400-1000 | F-80 | 212-150 | |
F-20 | 1180-850 | F-90 | 180-125 | |
F-22 | 1000-710 | F-100 | 150-106 | |
F-24 | 850-600 | F-120 | 125-90 | |
F-30 | 710-500 | F-150 | 106-63 | |
F-36 | 600-425 | F-180 | 90-63 | |
F-40 | 500-355 | F-220 | 75-53 |
Available sizes FEPA mikro (µm)
FEPA | Ds3 max. | Ds50 | Ds94 min. |
|---|---|---|---|
F-240 | 70 | 44,5+/-2,0 | 28 |
F-280 | 59 | 36,5+/-1,5 | 22 |
F-320 | 49 | 29,2+/-1,5 | 16,5 |
F-360 | 40 | 22,8+/-1,5 | 12 |
F-400 | 32 | 17,3+/-1,0 | 8 |
F-500 | 25 | 12,8+/-1,0 | 5 |
F-600 | 19 | 9,3+/-1,0 | 3 |
F-800 | 14 | 6,5+/-1,0 | 2 |
F-1000 | 10 | 4,5+/-0,8 | 1 |
F-1200 | 7 | 3,0+/-0,5 | 1 (80%) |
F-1500 | 5 | 2,0+/-0,4 | 0,8 (80%) |
F-2000 | 3,5 | 2,0+/-0,4 | 0,5 (80%) |
Physical properties
Hardness | 9,2 Mohs |
Melting point | 2050 ˚C |
Bulk density* | 1,5 - 2,1 kg / dm3 |
Grain shape | Angular |
* Depending on grain size.
Chemical analysis
Al2O3 | 98-99% |
Cr2O3 | 0,3-1,0% |
Na2O | 0,30% |
Fe2O3 | 0,05% |
CaO | 0,05% |