Brown Fused Alumina F36 is a mid-range FEPA abrasive grain designed for applications that require both effective material removal and a more controlled surface finish. Produced from high-quality bauxite through high-temperature fusion, this brown fused alumina offers excellent hardness, toughness, and stable grain distribution for consistent industrial performance.
Positioned between coarser and finer grit sizes, Brown Fused Alumina F36 provides a balanced abrasive action. It is widely used in sandblasting operations where operators need reliable cleaning of rust, scale, and coatings while achieving a more uniform surface profile compared to coarser grades like F24.
As a durable brown aluminum oxide abrasive, F36 is commonly applied in the production of grinding wheels, bonded abrasives, and coated abrasives such as sanding belts and discs. Its consistent grain size supports predictable wear behavior and efficient cutting performance across a wide range of materials.
Brown Fused Alumina F36 is the single highest‑volume FEPA grit size in the global abrasive industry. It is the default grain specification for general‑purpose grinding discs, depressed center wheels, cut‑off wheels, and resin bonded abrasive tools — and one of the most demanded grades among blasting media producers supplying steel fabrication, shipbuilding, and construction surface preparation markets.
With a particle size of 425–600 µm, F36 delivers the optimal balance between aggressive stock removal and a controlled surface finish that covers the widest range of industrial metalworking applications — which is why more grinding discs worldwide are manufactured with F36 grain than any other single FEPA size.
If your manufacturing line produces general‑purpose grinding discs, cut‑off wheels, or packaged blasting media, F36 is almost certainly your highest‑consumption grain grade. Its 425–600 µm particle size hits the exact balance point that the global metalworking market demands — strong enough for heavy grinding, refined enough for practical surface finishes, and tough enough for multiple blasting cycles.
Brown Fused Alumina F36, also called Brown Aluminum Oxide F36 or BFA F36, is produced by melting high‑grade bauxite in an electric arc furnace at temperatures exceeding 2000°C, then crushing, magnetically separating, and classifying the corundum crystals to the FEPA F36 standard — the most commonly specified grit size in the bonded abrasive and blasting media industries.
F36 is the baseline grit size that abrasive disc manufacturers use for general‑purpose grinding wheels and cutting discs. When a fabrication shop orders "standard grinding discs," the grain inside is most often F36. This makes it the single highest‑consumption FEPA grade in the bonded abrasive supply chain.
Blasting media manufacturers package BFA F36 as a general‑purpose industrial blasting abrasive that balances cleaning speed with a controlled surface profile. It removes rust, mill scale, old coatings, and weld spatter efficiently while creating an anchor pattern suitable for most protective coating systems.
The F36 classification ensures a controlled 425–600 µm particle distribution, giving disc manufacturers and blasting media producers the batch consistency needed for high‑volume production with minimal quality variation.
BFA F36 is the grain that anchors most manufacturers' product catalogs. It covers the widest application range, moves in the highest volumes, and offers the most predictable demand — making it the foundation of production planning for both abrasive tool makers and blasting media companies.
| Property | Typical Value | Relevance |
|---|---|---|
| Material | Brown Fused Alumina | Industrial abrasive grain |
| FEPA Grade | F36 | General‑purpose grit — highest market volume |
| Particle Size | 425–600 µm (0.425–0.600 mm) | Optimal balance of cutting and finish |
| Al2O3 | ≥95% | High purity and abrasive stability |
| Fe2O3 | ≤0.3% | Low iron — avoids workpiece contamination |
| SiO2 | ≤1.5% | Controlled silica for balanced composition |
| 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 blasting impact |
| 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 |
F36 is specified across the broadest range of abrasive products and blasting media applications — from standard grinding discs sold through industrial distributors to bulk blasting abrasive used in shipyards and steel fabrication plants.
F36 is the most commonly specified grain for resin bonded grinding discs, depressed center wheels, cut‑off discs, and general‑purpose abrasive tools. It provides the aggressive yet controllable cutting action that metalworking end users expect from a standard grinding disc — covering applications from weld grinding and deburring to general stock removal on carbon steel, alloy steel, cast iron, and stainless steel.
Blasting media manufacturers package BFA F36 as a standard recyclable blasting abrasive for rust removal, mill scale cleaning, weld preparation, paint stripping, and coating preparation in steel fabrication, shipbuilding, bridge maintenance, pipeline construction, and heavy equipment reconditioning. The grain produces an effective anchor profile for protective coating adhesion while maintaining low dust and strong recyclability.
Coated abrasive manufacturers use BFA F36 extensively in sanding belts, fibre discs, flap discs, and abrasive sheets for general metalworking — making it a high‑volume grain across both bonded and coated abrasive production lines.
Beyond abrasives and blasting, BFA F36 serves as aggregate in refractory castables and furnace linings, anti‑slip surface coatings, water‑jet cutting media, and wear‑resistant industrial compositions.
F36 sits at the center of the FEPA macro‑grit range, which is exactly why it captures the highest volume. It handles the widest application window without being too aggressive or too fine for most industrial tasks.
Used for aggressive grinding, heavy scale removal, and deep surface profiling. Better for rough prep work but leaves a coarser finish than most general‑purpose applications require.
The industry's default grade. Covers the widest range of grinding, cutting, and blasting applications. Produces a practical surface finish that satisfies the majority of protective coating adhesion requirements.
Preferred when the end application requires a less aggressive surface profile — automotive finishing, cookware blasting, precision components, or discs targeting lighter grinding and surface conditioning work.
F36 is the backbone of most grinding disc manufacturers' product catalogs. Here is what makes sourcing the right F36 grain critical to your production quality and market competitiveness.
F36 typically accounts for the largest single share of grain consumption in a grinding disc factory. Consistent supply at competitive pricing directly impacts your production continuity and margins on the products that generate the most revenue.
The angular grain profile of BFA F36 provides excellent mechanical interlocking with phenolic and epoxy resin binders. Combined with Barmac‑processed grain shapes that improve packing density, this delivers strong grain retention and extended disc life under high‑speed grinding.
FEPA‑certified particle distribution and ≤0.05% magnetic content mean fewer structural defects in finished tools. Consistent grain shape and size translate to predictable cutting performance across production batches — reducing customer complaints and warranty claims.
F36 is the general‑purpose blasting grade that covers the broadest customer base — from small fabrication shops to large shipyard and infrastructure contractors.
When a blasting contractor orders "standard aluminum oxide blasting media," F36 is the default. Stocking this grade positions your product to serve the widest possible customer base — from steel fabrication and shipyard maintenance to bridge coating preparation and general industrial cleaning.
BFA F36's toughness allows the grain to maintain its angular cutting edges through 5–8 typical blasting cycles in cabinet and room systems. This recyclability is a core selling point that differentiates your product from single‑use slag media and helps your customers reduce operating costs.
The anchor profile created by F36 blasting is compatible with the surface preparation standards (SA 2.5, SA 3) specified by most protective coating manufacturers. This means your blasting media product is suitable for the widest range of coating preparation applications without qualification issues.
As the highest‑consumption FEPA grade, F36 is available in packaging formats designed for continuous manufacturing line supply and high‑volume blasting media distribution.
Most manufacturers source F36 alongside complementary grades to cover their full product catalog — from heavy grinding to finishing applications.
These are the most common questions we receive from manufacturers sourcing BFA F36 for disc production and blasting media applications.
F36 hits the optimal particle size (425–600 µm) that balances aggressive stock removal with a practical surface finish. This makes it suitable for the widest range of general metalworking tasks — weld grinding, deburring, stock removal, and surface preparation — which is why disc manufacturers use it as their core production grain.
F24 has a larger particle (600–850 µm) that cuts more aggressively but leaves a rougher surface. F36 (425–600 µm) provides strong material removal while producing a smoother, more widely acceptable finish. Most manufacturers produce more F36 discs than F24 because F36 covers a broader end‑user application range.
Yes. F36 is one of the most versatile dual‑use FEPA grades. Disc manufacturers use it as their primary bonded abrasive grain, while blasting media producers package it as a general‑purpose recyclable blasting abrasive. Many manufacturers source F36 for both production lines from a single inventory.
Depending on blasting pressure, target material, and recovery system, BFA F36 typically delivers 5–8 recycling passes before the grain breaks down. This strong recyclability is a significant cost advantage over single‑use blasting media like copper slag or coal slag.
BFA F36 produces an anchor profile compatible with SA 2.5 (near‑white blast) and SA 3 (white metal blast) surface preparation standards. This makes it suitable for the coating preparation specifications most commonly called for in steel fabrication, shipbuilding, and infrastructure projects.
Our BFA F36 is supplied with ≥95% Al₂O₃ and ≤0.05% magnetic content. These specifications are critical for both grinding disc quality (where magnetic impurities cause structural defects) and blasting media purity (where contamination must be controlled).
Yes. For manufacturers with regular monthly consumption of F36, we offer scheduled shipment programs with agreed pricing, lead times, and packaging specifications. This helps production planners maintain inventory without supply gaps on their highest‑volume grain.
Send your requirements — including monthly or annual volume, application (disc manufacturing, blasting media, coated abrasives, or other), packaging preference, and destination — to sales@fusedaluminascm.com. Samples and competitive bulk pricing are available for qualified manufacturers.
F36 is the grain your factory consumes the most. Reliable supply, consistent quality, and competitive pricing on this grade directly impact your production continuity and profit margins. Our team provides bulk pricing, scheduled shipment programs, and technical support for manufacturers worldwide.
Contact us for BFA F36 quotations, scheduled supply agreements, technical data sheets, and sample requests.
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 negotiate better sourcing terms based on material origin, furnace type, and processing methods.
Selected bauxite with high alumina content, along with carbon materials (coke or anthracite) and iron filings, is prepared as feedstock. Bauxite quality directly affects the final Al₂O₃ purity and grain performance.
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. Fixed furnace production generally yields higher quality grain with better crystal structure than tilting furnace methods.
Cooled corundum blocks are crushed through jaw and hammer mills, then magnetically separated and screened to the 425–600 µm particle distribution required by the FEPA F36 standard. Barmac processing can further improve grain shape and packing density for bonded abrasive applications.
Every batch of BFA F36 is tested to ensure it meets the chemical, physical, and particle distribution specifications that abrasive disc and blasting media manufacturers require for their highest‑volume production grade.
Verification of Al₂O₃ purity (≥95%), Fe₂O₃ (≤0.3%), SiO₂ (≤1.5%), TiO₂ (≤3.5%), and CaO levels to ensure each batch meets abrasive and blasting specifications consistently.
Sieve analysis confirms the F36 grain meets FEPA standard distribution limits. For the highest‑volume grade, even small deviations in PSD can affect thousands of finished discs — making batch consistency critical.
Magnetic separation confirms ≤0.05% magnetic residue, and dust content is monitored to ensure clean grain that bonds properly in abrasive tools and performs consistently in blasting operations.
As the highest‑volume FEPA grade, BFA F36 reaches the broadest range of manufacturers and end‑use industries in the abrasive supply chain.
Grinding disc, cutting wheel, and mounted point producers who use F36 as their core production grain for general‑purpose resin bonded and vitrified bonded tools.
Producers of packaged blasting abrasives supplying steel fabrication plants, shipyards, infrastructure contractors, and blast room operators with general‑purpose aluminum oxide media.
Manufacturers of abrasive belts, fibre discs, flap discs, and sanding products for metalworking, fabrication, and construction applications.
Industrial end users who purchase BFA directly or through blasting media brands for structural steel cleaning, weld preparation, and coating preparation.
Contractors and surface treatment companies preparing bridges, pipelines, storage tanks, and heavy structures for protective coating systems.
Private label and OEM brands that source grain directly for their own branded grinding, cutting, and surface preparation products — F36 is typically their highest‑volume SKU.
