Product Description
White fused alumina was made from the high quality alumina by melting above 2200℃ in the electric arc furnace and cooling.
White fused alumina is white with the main crystal phase alpha-Al2O3.
White fused alumina produced in titling electric arc furnace has the advantage of high bulk density and low porosity and the volume stability and thermal shock resistance can be improved.
Physical and Chemical Composition
Physical Properties | |
Hardness: micro | 21600-22600kg/mm3 |
Hardness: Mohs | 9.0 min |
Specific Gravity | 3.95-3.97g/cm3 |
Bulk Density | 1.65-2.05g/cm3 |
Particle Shape | Blocky, Sharp |
Color | white |
Chemical compositions | |
Al2O3 | 99.40min |
SiO2 | 0.15max |
Na2O | 0.28max |
Fe2O3 | 0.06max |
CaO | 0.03max |
Applications
Refractory castables
Bonded abrasive tool
Coated abrasive tool
Reusable abrasive
Grinding,lapping & polishing medium
Raw material for foundry ,coating or paints
Resin/Ceramic grinding wheels & grinding media
Typical Size
Fraction sand or powder | |
Grit designation | Passing rate % |
0-1mm | 90 |
1-3mm | 90 |
3-5mm | 90 |
100 mesh | 90 |
200 mesh | 90 |
320 mesh | 90 |
F-macrogrits sizes bonded | |
Grit designation | Mean diameter in um |
F4 | 4890 |
F5 | 4125 |
F6 | 3460 |
F7 | 2900 |
F8 | 2460 |
F10 | 2085 |
F12 | 1765 |
F14 | 1470 |
F16 | 1230 |
F20 | 1040 |
F22 | 885 |
F24 | 745 |
F30 | 625 |
F36 | 525 |
F40 | 438 |
F46 | 370 |
F54 | 310 |
F60 | 260 |
F70 | 218 |
F80 | 185 |
F90 | 154 |
F100 | 129 |
F120 | 109 |
F150 | 82 |
F180 | 69 |
F220 | 58 |
F-MICROGRITS | |
Grit designation | Mean grain size ds50-value in μm |
F 230 | 53.0 ± 3 |
F 240 | 44.5 ± 2 |
F 280 | 36.5 ± 1.5 |
F 320 | 29.2 ± 1.5 |
F 360 | 22.8 ± 1.5 |
F 400 | 17.3 ± 1 |
F 500 | 12.8 ± 1 |
F 600 | 9.3 ± 1 |
F 800 | 6.5 ± 1 |
F 1000 | 4.5 ± 0.8 |
F 1200 | 3.0 ± 0.5 |
F 1500 | 2.0 ± 0.4 |
F 2000 | 1.2 ± 0.3 |
F 3000 | 0.8±0.2 |
