Brown Fused Alumina F30 is a versatile FEPA grit size designed for buyers who need a balance between cutting power and improved surface control. Manufactured through high-temperature fusion of selected raw materials, this brown fused alumina grade delivers excellent hardness, toughness, and stable particle distribution for repeatable industrial performance.
Compared with coarser grades, Brown Fused Alumina F30 offers a more controlled abrasive effect while still maintaining strong cleaning efficiency. That makes it a valuable option for sandblasting operations that require effective rust removal, oxidation cleaning, paint stripping, and surface preparation without an overly rough profile.
This brown aluminum oxide abrasive grain is also widely used in grinding wheels, coated abrasives, and bonded abrasive products where durability and consistent sizing matter. In addition, F30 can be applied in refractory materials and wear-resistant industrial compositions where heat resistance and mineral stability are important.
Brown Fused Alumina F30 is one of the most demanded FEPA grades among abrasive disc manufacturers and blasting media producers. Sitting between the aggressive F24 and the finer F36, the F30 grit size delivers balanced cutting performance that works across resin bonded grinding wheels, cutting discs, coated abrasive belts, and recyclable blasting media products.
Produced by melting high‑grade bauxite in electric arc furnaces, BFA F30 forms dense aluminum oxide crystals with sharp angular edges, high toughness, and excellent self‑sharpening behavior — properties that both abrasive tool makers and blasting media manufacturers depend on for consistent product quality.
BFA F30 is one of the few FEPA grades equally suited for abrasive disc manufacturing and blasting media production. Its particle size, angular structure, and toughness make it a dependable raw material for grinding wheels, cutting discs, sanding belts, and reusable blasting abrasives — all from the same grain specification.
Brown Fused Alumina F30, also called Brown Aluminum Oxide F30 or BFA F30, is produced by melting high-grade bauxite in an electric arc furnace at temperatures exceeding 2000°C, then crushing and classifying the resulting corundum crystals to the FEPA F30 standard for abrasive and blasting applications.
The sharp angular edges and self‑sharpening character of BFA F30 make it a productive abrasive grain for resin bonded grinding wheels, cutting discs, and mounted points where consistent stock removal is required.
BFA F30's high specific gravity and toughness produce fast cleaning action with low dust generation. Its angular profile creates effective anchor patterns on metal surfaces, and the grain can be recycled through multiple blasting cycles.
The F30 classification ensures a controlled particle size range of 0.600–0.850 mm, giving manufacturers reliable batch‑to‑batch consistency for both abrasive tool production and blasting media packaging.
BFA F30 is chosen by manufacturers who need a single grain grade that performs reliably in bonded abrasive tools, coated abrasive products, and packaged blasting media — reducing inventory complexity while maintaining product quality across multiple production lines.
| Property | Typical Value | Relevance |
|---|---|---|
| Material | Brown Fused Alumina | Industrial abrasive grain |
| FEPA Grade | F30 | Versatile coarse grit for discs and blasting |
| Particle Size | 0.600–0.850 mm | Between F24 and F36 for balanced performance |
| Al2O3 | ≥95% | High purity and abrasive stability |
| Fe2O3 | ≤0.3% | Low iron — avoids contamination in abrasive tools |
| SiO2 | ≤1.5% | Controlled silica for balanced mineral content |
| TiO2 | ≤3.5% | Enhances toughness and fracture resistance |
| Hardness | Mohs 9 | Effective cutting in grinding and blasting |
| Specific Gravity | 3.9 g/cm³ | Dense grain — strong impact in blasting media |
| Bulk Density | 1.5–1.95 g/cm³ | Practical handling and packaging efficiency |
| Melting Point | ~2050°C | Also suitable for refractory applications |
| Magnetic Content | ≤0.05% | Critical for grinding wheel quality control |
F30 is specified by manufacturers who produce abrasive tools and blasting products for the metalworking, shipbuilding, construction, and surface treatment industries.
Abrasive disc manufacturers use BFA F30 as the primary grain in resin bonded grinding wheels, depressed center discs, and cut‑off wheels. The grain's toughness and self‑sharpening behavior provide sustained cutting performance throughout the disc's working life, while its angular shape ensures strong mechanical bonding with phenolic and epoxy resin systems.
Blasting media producers package BFA F30 as a reusable industrial blasting abrasive for steel surface cleaning, rust and scale removal, coating preparation, and anchor profile creation. The grain's high density reduces airborne dust, while its toughness allows multiple recycling passes in cabinet and room blasting systems.
Coated abrasive manufacturers incorporate BFA F30 into abrasive belts, fibre discs, and flap discs for heavy‑duty sanding and metal finishing. The grain bonds effectively with resin make and size coats and provides aggressive stock removal on steel, stainless steel, and cast iron substrates.
Beyond abrasives and blasting, BFA F30 is also used as aggregate in refractory castables, furnace linings, and wear‑resistant compositions where thermal stability and hardness at elevated temperatures are required.
Understanding where F30 sits helps abrasive disc and blasting media manufacturers select the right grain for their product specifications.
Used in heavy grinding discs and aggressive blasting media where maximum stock removal or deep surface profiling is the priority. Larger particle, rougher finish.
The most versatile grain for manufacturers serving both the abrasive disc and blasting media markets. Provides strong cutting and cleaning performance with a more controlled surface profile than F24.
Preferred when the finished surface needs a less aggressive profile, or when the abrasive disc is used for lighter grinding and finishing work. Smaller particle, tighter surface texture.
Grain quality directly affects the performance, safety rating, and shelf life of finished abrasive discs. Here is what matters when sourcing BFA F30 for your manufacturing line.
The angular grain profile of BFA F30 provides excellent mechanical interlocking with phenolic and epoxy resin binders, reducing grain pull‑out during high‑speed grinding and extending disc working life.
FEPA‑certified particle distribution means each production batch produces discs with consistent cutting behavior, reducing quality rejects and customer complaints on the manufacturing floor.
Magnetic impurities can cause cracks and weak spots in grinding wheels. BFA F30 with ≤0.05% magnetic content helps manufacturers maintain high pass rates during quality inspection.
Blasting media quality determines cleaning speed, surface finish, and recyclability — all factors that affect your customers' operating costs and your product reputation.
BFA F30's toughness allows the grain to maintain its angular shape through repeated impact cycles, giving blasting operators more passes per batch and reducing media consumption — a key selling point for your product.
The high specific gravity (3.9 g/cm³) of brown fused alumina means less airborne dust compared to lighter blasting media like slags, improving operator visibility and reducing respiratory exposure in blast rooms.
F30 creates a consistent angular anchor profile on steel surfaces that promotes coating adhesion. This makes it suitable for blasting applications specified under SA 2.5 and SA 3 surface preparation standards.
BFA F30 is available in standard industrial packaging formats designed for direct use on abrasive disc production lines and blasting media packaging operations.
Abrasive disc and blasting media manufacturers often source multiple FEPA grades to cover different product lines. These complementary sizes are available alongside F30.
These are the most common questions we receive from abrasive disc producers and blasting media companies when sourcing BFA F30.
Yes. F30 is one of the most versatile FEPA grades because its particle size, toughness, and angular structure meet the requirements of both bonded abrasive manufacturing and blasting media production. Many manufacturers source F30 to supply both product lines from a single grain inventory.
F30 has a larger particle size (0.600–0.850 mm) compared to F36 (0.500–0.710 mm), resulting in more aggressive cutting behavior. F30 is preferred for heavy stock removal grinding discs, while F36 is used when a slightly smoother finish is needed.
Depending on blasting pressure, target material, and recovery system, BFA F30 can typically be recycled 4–8 times before the grain breaks down to a size that is no longer effective. This recyclability is a significant cost advantage over single-use blasting media.
Our BFA F30 is supplied with a minimum 95% Al₂O₃ content, with controlled levels of TiO₂, SiO₂, and Fe₂O₃. This purity level supports consistent abrasive performance in both disc manufacturing and blasting media applications.
Yes. Magnetic content is maintained at ≤0.05% through magnetic separation during processing. This is critical for grinding wheel manufacturers, as magnetic impurities can cause structural defects in bonded abrasive tools.
Standard packaging includes 25 kg PP bags and 1‑ton jumbo bags. Custom packaging and private labeling are available for blasting media companies that resell under their own brand. Full container loads can be arranged for export shipments.
Send your requirements — including quantity, application (disc manufacturing, blasting media, or both), packaging preference, and destination — to sales@fusedaluminascm.com. Samples and competitive bulk pricing are available for qualified manufacturers.
Whether you manufacture grinding discs, cutting wheels, coated abrasives, or packaged blasting media, our team can provide competitive bulk pricing, consistent supply, and technical support for BFA F30 integration into your production process.
Contact us for BFA F30 quotations, technical data sheets, and sample requests for your manufacturing line.
Providing these details helps us return accurate pricing and lead times for your production needs.
Understanding the production process helps manufacturers evaluate grain quality and make better sourcing decisions for their abrasive and blasting products.
Selected bauxite with high alumina content, along with carbon materials (coke or anthracite) and iron filings, is prepared as feedstock for the electric arc furnace.
Raw materials are fused at extreme temperatures inside an electric arc furnace. The molten alumina then cools slowly over 24–48 hours to form dense, blocky α‑alumina crystals with high hardness.
Cooled corundum blocks are crushed through jaw crushers and hammer mills, then magnetically separated and screened to produce the precise 0.600–0.850 mm particle distribution required by the FEPA F30 standard.
Every batch of BFA F30 is tested to ensure it meets the chemical, physical, and particle distribution specifications that abrasive disc and blasting media manufacturers require.
Verification of Al₂O₃ purity, Fe₂O₃, SiO₂, TiO₂ and CaO levels to ensure each batch meets the specification for abrasive and blasting applications.
Sieve analysis confirms the F30 grain meets FEPA standard distribution limits, ensuring consistent performance in disc manufacturing and blasting media packaging.
Magnetic separation and testing confirms ≤0.05% magnetic residue — essential for manufacturers producing grinding wheels and cutting discs where magnetic impurities cause structural defects.
Our BFA F30 is sourced by manufacturers across multiple industrial sectors who rely on consistent abrasive grain quality for their production processes.
Grinding wheel, cutting disc, and mounted point producers who need reliable grain for resin bonded and vitrified bonded tool production.
Producers of packaged blasting abrasives who supply blast rooms, cabinet systems, and field blasting operations with recyclable aluminum oxide media.
Manufacturers of abrasive belts, fibre discs, flap discs, and sanding sheets who require angular grain with strong bond adhesion characteristics.
Companies producing refractory castables, bricks, and furnace linings that use BFA as a high‑temperature resistant aggregate.
Industrial blasting service providers who purchase BFA directly for steel fabrication, shipyard maintenance, and infrastructure coating preparation.
Private label and OEM brands that source grain directly for their own branded grinding, cutting, and surface preparation products.
