What is the specific surface?
The specific surface means the outer surface of a substance including all accessible pores in relation to the mass. It is determined using the Brunauer-Emmett-Teller (BET) method.
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）
Which method of transport would be better?
Generally, we suggest to make shipment by sea which costs less. We also can follow other transportation method you asked.
Are you a manufacturer or trader ?
Yeah, We are the manufacturer of BFA, WFA, GC. Also,we had good business relationship with others abrasive media & refractory raw materials manufacturer . more over we have QC department which make strict inspection on goods quality, packing, so we can provide a stable and quick delivery of all the
What is the hardness?
Hardness is rated from A-Z with ‘A’ being the weakest bond and ‘Z’ being the strongest. A weak bond is preferred for grinding harder materials while a stronger bond is desired for softer materials. A typical weak bond for steel would be in the ‘F, G or H’ range. A
Are you a trading company or manufacturer?
We are a manufacturing and trading combo,produce and export fused alumina for more than 10 years.
Coarseness of the abrasive mineral:
Commonly referred to as “grit”, this number designation is determined by the amount of abrasive mineral that can pass through a mesh screen with specific size openings. Therefore, a 40 grit abrasive particle will pass through a mesh screen that has 40 openings in one linear inch. Consequently, the higher
Product Category
White Fused Alumina Products
White Fused Alumina News
Product Knowledge
Specification Of Brown Fused Aluminum Oxide-TAOANG
Over the past 18 years, TAOANG products range from raw material bauxite to processing follow-up products brown fused alumina, finishing white fused alumina and dense fused alumina, bubble alumina, and fused alumina micro powder. The production process is
Green Silicon Carbide, Carborundum-TAOANG
Over the past 18 years, TAOANG products range from raw material bauxite to processing follow-up products brown fused alumina, finishing white fused alumina and dense fused alumina, bubble alumina, and fused alumina micro powder. The production process is
Industry News
The Export Of Brown Fused Aluminum Oxide And Silicon Carbide In July 2020
Fused Alumina is the tooth of industry and is widely used in various industries. TAOANG is committed to sharing information on the upstream and downstream industries of fused alumina. According to customs statistics, in July 2020, China’s exports
China Shut Kilns For Calcined Bauxite In Major Production Area
Fused Alumina is the tooth of industry and is widely used in various industries. TAOANG is committed to sharing information on the upstream and downstream industries of fused alumina. China supplies more the 80 percent abrasive grade bauxite. In
Company News
The deputy mayor of Sanmenxia City visited our company to investigate the transformation of enterprises in the city
On February 3, the deputy mayor of Sanmenxia led the comrades in charge of the Municipal Development and Reform Commission, Municipal Finance Bureau, Municipal Industry and Information Bureau, Municipal Ecological Environment Bureau and other relevant departments to go
How is fused alumina obtained?
Raw materials containing aluminium oxide are electrothermally melted at a reaction temperature of more than 2,000 °C to produce the various fused aluminas. Different starting materials are used depending on the desired type of fused alumina. For instance,