| Natural Abrasive Type: | Natural Corundum |
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| Artificial Abrasive Type: | Corundum Abrasives |
| Application: | Metal Parts |
| Function: | Surface Deburring |
| Source: | Natural Abrasives |
| Particle Size: | Abrasive |
| Samples: |
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| Customization: |
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Brown fused alumina is a versatile product available in various forms. It includes brown fused alumina for abrasive, brown fused alumina for refractory, and high temperature treated BFA. Known for its high hardness and toughness, this material is widely used in abrasive applications, refractory production, and high-temperature treatments. It provides excellent performance and durability in different industrial processes.
Aluminium oxides are fast and effective for removing rust, mill scale, paint, carbon deposits. Aluminium oxide media will remove residues from your substrate twice the speed as sand, without all the health risks. Aluminum Oxide media is excellent for antiskid, antislip flooring coatings, and an additive for epoxy floor systems.
| Chemical & Physical Properties | ||||||
| Crystal Form | Alpha alumina trigonal system | |||||
| Chemical nature | Amphoteric | |||||
| Reaction with acids | Subject to mild attack by aqua | |||||
| Reaction with Alkalies | Very slight with strong hot solution only | |||||
| Oxidation-reduction effects | None | |||||
| True Density(g/cm3) | 3.97 | |||||
| Hardness | Knoop(kg/cm2) | 2000-2200 | ||||
| Moh's | 9 | |||||
| Colour | Dark Brown | |||||
| Colour after firing | Light blue | |||||
| Melting point | 2000°C | |||||
| Max Usable temperature | 1900°C | |||||
| Specific heat (cal/g.°C) | 0.26(20-29°C) | |||||
| Coefficient of thermal conductivity | Room temperature | 900°C | ||||
| (cal/cm2.sec.°C) | 0.047 | 0.013 | ||||
| Electrical resistivity (Wcm) | 30°C | 300°C | 900°C | 1600°C | ||
| 1016 | 1013 | 105 | 104 | |||
| Coefficient of linear expansion (x10-6) | 7-9(0-1600°C) | |||||
| Available grain sizes | |||||
| Grit No. | Micron | Grit No. | Micron | Grit No. | Micron |
| 10 | 2360 ~ 2000 | 30 | 710 ~ 600 | 80 | 212 ~ 180 |
| 12 | 2000 ~ 1700 | 36 | 600 ~ 500 | 90 | 180 ~ 150 |
| 14 | 1700 ~ 1400 | 40 | 500 ~ 425 | 100 | 150 ~ 125 |
| 16 | 1400 ~ 1180 | 46 | 425 ~ 355 | 120 | 125 ~ 106 |
| 20 | 1180 ~ 1000 | 54 | 355 ~ 300 | 150 | 106 ~ 75 |
| 22 | 1000 ~ 850 | 60 | 300 ~ 250 | 180 | 90 ~ 63 |
| 24 | 850 ~ 710 | 70 | 250 ~ 212 | 220 | 75 ~ 53 |
| Available micron powder sizes | ||||||||
| China GB 2477-83 | JIS | FEPA(84) / DIN(70) | ISO(77) | |||||
| Grit No. | Standard size range(µm) | Grit No. | ds50 value (µm) | Grit No. | ds50 value (µm) | Grit No. | ds50 value (µm) | |
| Standard werte der Mikro-F-Reihe | Serigraph 5000D | |||||||
| 240 | 60.0±4.0 | P240 | 58.5±2.0 | |||||
| 280 | 52.0±3.0 | P280 | 52.2±2.0 | |||||
| W63 | 63 - 50 | 320 | 46.0±2.5 | F230/53 | 53±3.0 | 50.0±3.0 | P320 | 46.2±1.5 |
| W50 | 50 - 40 | 360 | 40.0±2.0 | F240/45 | 44.5±2.0 | 42.0±2.0 | P360 | 40.5±1.5 |
| 400 | 34.0±2.0 | P400 | 35.0±1.5 | |||||
| W40 | 40 - 28 | 500 | 28.0±2.0 | F280/37 | 36.5±1.5 | 34.5±1.5 | P500 | 30.2±1.5 |
| 600 | 24.0±1.5 | F320/29 | 29.2±1.5 | 27.7±1.5 | P600 | 25.8±1.0 | ||
| W28 | 38 - 20 | 700 | 21.0±1.3 | F360/23 | 22.8±1.5 | 21.6±1.5 | P800 | 21.8±1.0 |
| 800 | 18.0±1.0 | F400/17 | 17.3±1.0 | 16.5±1.0 | P1000 | 18.3±1.0 | ||
| W20 | 20 - 14 | 1000 | 15.5±1.0 | F500/13 | 12.8±1.0 | 12.3±1.0 | P1200 | 15.3±1.0 |
| W14 | 14-10 | 1200 | 13.0±1.0 | |||||
| 1500 | 10.5±1.0 | F600/9 | 9.3±1.0 | 9.0±1.0 | ||||
| W10 | 10-7 | 2000 | 8.5±0.7 | |||||
| W7 | 7-5 | 2500 | 7.0±0.7 | F800/7 | 6.5±1.0 | 6.3±1.0 | ||
| W5 | 5 - 3.5 | 3000 | 5.7±0.5 | F1000/5 | 4.5±0.8 | 4.5±0.8 | ||
| F1200/3 | 3.1±0.5 | 3.1±0.5 | ||||||
| for general purposes | for general purposes | for bonded abrasives | for coated abrasives | |||||
1. Make the wear-resistant and non-slip pavement. Brown fused alumina is used for laying wear-resistant and anti-skid pavements, bridge decks, and steep slopes of parking lots. It is used as wear-resistant aggregate for plastic floors. It has good wear-resistant and anti-skid properties. Comparing with the original high-grade aggregate laying, it has a very high cost-effective advantage.
2. Used for grinding and polishing materials. The surface polishing process by brown fused alumina grains has lower pressure, which avoids leaving very fine lines on the surface of the steel plate. The polishing workpiece has good consistency, and the workpiece will not be burned, and the processing efficiency is high.
3. Make resin abrasives. Use 30%-50% of brown fused and black fused alumina to compound to make resin abrasives. Compared with traditional resin abrasives, the resin abrasives made of this composite abrasive have significantly improved sharpness and higher cut or grinded finish, and the color becomes smaller. Due to the low cost, the resin abrasive tool made of composite abrasives has a low cost performance.
4. Make coated abrasives. The application of brown fused alumina series products in the field of resin abrasives and coated abrasives is to replace some other abrasives, and partially replace other abrasives to make abrasives. High-cost abrasives are equivalent, but they will reduce the production cost of abrasives and greatly improve the cost performance.
5. Other applications. Brown fused alumina abrasive with fine particle size is used as an additive for wear-resistant and fire-resistant coatings; sandblasting for old jeans; wear-resistant and anti-skid materials added to the outer side of the heel and heel in the shoe industry; making unshaped refractory materials; making fire insulation materials under medium and low temperature.
How To Choose Brown Fused Alumina?
1. As refractory castables, such as steel mills, iron mills, brown corundum as filling smelting furnaces or as coatings for smelting furnaces, the common particle sizes of sand are: 0-1mm, 1-3mm, 3-5mm, 5-8mm, 200mesh, 325mesh and other different segments of sand are selected according to different processes.
2. As sandblasting and rust removal, such as aluminum products, copper glass, sand washing, the commonly used brown fused alumina sand grain sizes are 16#, 24#, 30#, 36#, 46#.
3. As abrasives, according to different process requirements, the commonly used grit sizes are 8#, 14#, 20#, 24#, 30#, 36#, 46#, 54#, 60#, 80#, 100#, 120#, 150#, 180#, 220#.
4. Used for polishing and grinding, such as polishing of mechanical surface, glass surface, and beautification of handicrafts, the commonly used micropowder particle size are 220 mesh, 240 mesh, 325 mesh, 500 mesh, 800 mesh.
5. As the wear-resistant floor, such as school playgrounds, parking lots, park squares and other grounds that need anti-skid and wear-resistant treatment, you can choose the third-grade brown fused alumina with a lower content of brown fused alumina
FAQ:Question 1: Are you a manufacturer or trader ?
Yeah, We are the manufacturer of BFA, WFA. 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.
Question 2: Can i get sample in free , how long is the time?
Yes, certainly. We will provide the sample is in free below 1 kgs for free, and the freight cost for free in 1kg. We could arrange the existing samples express delivery immediately.
Question 3: Can you customized quality, size, package according to customer?
Yes, of course. The OEM is available. We will do the creation in your requirement and make ur image come true.
Question 4:Can Customer ask for the third party certification?
Yes, No problem, but Custome. resposiable for the charge
Question 5:Warranty
Firstly, We make sure the quality before the goods to be packed, if clients get the item with Substandard products, We have warranty for our clients,we will ship out the new replacements.
Question 6:What's payment terms ?
Bank T/T, L/C at sight, Westunion
Why Choose Us?
1) 20 years abrasive industry experiences
2) Direct Factory supply Fixed abrasive sources
3) On-site inspection in factory for each shipment
4) Samples tests each lot in Zhengzhou Research Institute for Abrasives& Grinding Co., Ltd
Our Brown fused alumina grit has been exported to Japan, India, Israel, Russia, Poland etc.
Pls send me email to get Brown fused alumina datasheet /samples and quotation…
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