What is your sample policy?
We can supply the sample if we have ready parts in stock, but the customers have to pay the sample cost and the courier cost.
White fused alumina micro grits powder FEPA & JIS
White fused alumina micro grits powder FEPA & JIS using the high-quality fine powder, further broken and shaped by a pipe mill and removed iron, acid pickling and moisture by magnetic separation. White fused alumina micro grits are produced by the grinding & classification of selected Macro grain feedstock in advanced milling and classifying facility. The sizes are controlled and tested using an x-ray sedimentation particle size analyzer and particle counter. Micro grits generally conform to the FEPA (Federation of European Producers of Abrasives) specifications. Also, the plant supplies JIS and other customer-specific sizes as required.
Introduce of white fused alumina micro grits powder FEPA & JIS:
White fused alumina micro-powder is a high-quality α-alumina powder as a raw material. It also has high purity, good self-sharpening, acid and alkali resistance, high-temperature resistance, thermal state performance stability, and excellent insulation. White fused alumina powder is suitable for making bonded and coated grinding tools; wet or dry, sandblasting, ultra-fine grinding and polishing in the crystal and electronic industry; and making advanced refractory materials and materials with high tensile strength. Also, it can be used as a catalyst, insulator, precision casting sand, etc. White fused alumina powder is also widely used in the emerging wood flooring industry, circuit boards, special coatings, polishing waxes, etc. Compared with ordinary micro-powder, our fine powder and ultrafine micro-powder properties are more concentrated in particle size distribution, making uniform surface and better gloss performance of polished wafer.
Physical properties of white fused alumina micro grits powder FEPA & JIS:
| Melting point(℃) | 2250 | |
| Bulk density(g/cm3) | 1.80~1.95 | |
| Mohs Hardness | 9.0min | |
| Whiteness | 85min | |
| Size | FEPA F230-F1200 & JIS #240-#10000 | |
Chemical composite of white fused alumina micro grits powder FEPA & JIS:
| Item | Al2O3 % | Fe2O3 % max | SiO2 % max | Na2O % max |
| WAM-S | 99.5 | 0.05 | 0.10 | 0.35 |
| WAM-A | 99.7 | 0.05 | 0.10 | 0.06 |
Particle distribution of white fused alumina micro grits powder FEPA
| FEPA SIZE | Average grain size (μm) | ||
| ds3 (μm) max | ds50 (μm) | ds94 (μm) min | |
| F 230 | 77 | 55.7 ± 3.0 | 38 |
| F 240 | 68 | 47.5 ± 2.0 | 32 |
| F 280 | 60 | 39.9 ± 1.5 | 25 |
| F 320 | 52 | 32.8 ± 1.5 | 19 |
| F 360 | 46 | 26.7 ± 1.5 | 14 |
| F 400 | 39 | 21.4 ± 1.0 | 10 |
| F 500 | 34 | 17.1 ± 1.0 | 7 |
| F 600 | 30 | 13.7 ± 1.0 | 4.6 |
| F 800 | 26 | 11.0 ± 1.0 | 3.5 |
| F 1000 | 23 | 9.1 ± 0.8 | 2.4 |
| F 1200 | 20 | 7.6 ± 0.5 | 2.4 |
Particle distribution of white fused alumina micro grits powder JIS:
| Abrasives micro size distribution Japan standard JIS#240~10000 | ||||||||
| Settlement pipe particle size analysis method(μm) | Electric-resistivity grain counter method(μm) | |||||||
| ds0 | ds3 | ds50 | ds94 | ds0 | ds3 | ds50 | ds94 | |
| #240 | 127 | 90 | 60±4.0 | 48 | 127 | 103 | 57±3.0 | 40 |
| #280 | 112 | 79 | 52±3.0 | 41 | 112 | 87 | 48±3.0 | 33 |
| #320 | 98 | 71 | 46±2.5 | 35 | 98 | 74 | 40±2.5 | 27 |
| #360 | 86 | 64 | 40±2.0 | 30 | 86 | 68 | 35±2.0 | 23 |
| #400 | 75 | 56 | 34±2.0 | 25 | 75 | 58 | 30±2.0 | 20 |
| #500 | 65 | 48 | 28±2.0 | 20 | 63 | 50 | 25±2 | 16 |
| #600 | 57 | 43 | 24.0±1.5 | 17 | 52 | 41 | 20±1.5 | 13 |
| #700 | 50 | 39 | 21.0±1.3 | 14 | 45 | 37 | 17±1.3 | 11 |
| #800 | 46 | 35 | 18.0±1.0 | 12 | 38 | 31 | 14±1.0 | 9 |
| #1000 | 42 | 32 | 15.5±1.0 | 9.5 | 32 | 27 | 11.5±1.0 | 7 |
| #1200 | 39 | 28 | 13.0±1.0 | 7.8 | 27 | 23 | 9.5±0.8 | 5.5 |
| #1500 | 36 | 24 | 10.5±1.0 | 6.0 | 23 | 20 | 8.0±0.6 | 4.5 |
| #2000 | 33 | 21 | 8.5±0.7 | 4.7 | 19 | 17 | 6.7±0.6 | 4 |
| #2500 | 30 | 18 | 7.0±0.7 | 3.6 | 16 | 14 | 5.5±0.5 | 3 |
| #3000 | 28 | 16 | 5.7±0.5 | 2.8 | 13 | 11 | 4.0±0.5 | 2 |
| #4000 | 4.7±0.4 | 11 | 8 | 3.0±0.4 | 1.3 | |||
| #6000 | 8 | 5 | 2.0±0.4 | 0.8 | ||||
| #8000 | 6 | 3.5 | 1.2±0.3 | 0.6（ds75） | ||||
| #10000 | 0.8±0.2 | |||||||
White Fused Alumina（FAQ）
What is the specific weight?
The specific weight is the ratio of the weight of a body to its volume. The specific weight of corundum under normal conditions is 3.94 g/cm3.
What is corundum?
Corundum is a mineral from the category of oxides and hydroxides and is the most frequently used industrial mineral worldwide. It also occurs naturally as a gemstone (sapphire, emerald, ruby). Chemically corundum is aluminium oxide with the chemical formula Al2O3.
What is the difference between aluminium oxide and white fused alumina?
Al2O3 alumina is the starting material of aluminium production, both of metallic aluminium and aluminium oxide. It is porous an has a large reactive surface.
What is the shelf life of fused aluminum oxide?
fused aluminum oxide products do not have a known shelf life. As long as the product is maintained in the original sealed container and stored in a cool, dry, ventilated area, our product will last indefinitely
Can customer ask for the third party certification?
Yes, No problem, but Customer resposiable for the charge.
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