Uses and applications of Brown Aluminium Oxide (also known as Brown Fused Alumina or BFA) across various industries:

Brown Aluminium Oxide is a hard, tough, and durable abrasive material made by fusing bauxite in an electric arc furnace. It consists mainly of Aluminum Oxide (Al₂O₃) with a small percentage of Titania (TiO₂) and other impurities.

• Hardness: ~9 on Mohs scale

• Color: Brown

• Melting Point: ~2,050°C

• Typical Grit Sizes: F12 to F220 (macro), F240 to F1200 (micro)

• Grinding wheels: Used in resin-bonded and vitrified wheels for grinding hardened steel, alloy steel, and cast iron.

• Sandpaper & abrasive cloth: Ideal for both wet and dry applications.

• Blasting media: For surface preparation, rust removal, and finishing of metals, concrete, and composites.

• Polishing: Suitable for rough and intermediate polishing operations.

• Refractory bricks & castables: Used in linings for furnaces, kilns, and incinerators due to its high heat resistance.

• Ceramic shapes & tiles: In applications requiring thermal stability and abrasion resistance.

• Shot blasting and sandblasting: For cleaning, deburring, and roughening surfaces before coating or painting.

• Etching & frosting of glass: Achieves decorative or functional textures.

• Lapping & honing: In precision metal finishing.

• Tool sharpening: Used in stones and belts for sharpening cutting tools.

• Used in floor coatings, runways, and steps for enhancing traction and preventing slips.

• As a raw material additive to improve wear resistance and strength of ceramics.

• Sometimes used as a media in industrial filtration systems, especially for high-speed filtration of contaminants.

• High hardness and toughness

• Reusable in blasting applications

• Thermally stable at high temperatures

• Electrically non-conductive

• Cost-effective compared to White Fused Alumina

Aluminium Oxide White (Grit 80M) — also known as White Fused Alumina (WFA) — is a high-purity abrasive made from fusing alumina (Al₂O₃) in electric arc furnaces. The "Grit 80M" refers to a medium-fine grade (typically ~180–212 microns) commonly used in surface treatment and finishing applications.

This material is valued for its hardness, high melting point, chemical stability, and purity, making it suitable for a wide range of industrial, construction, and specialty uses.

• Hardness: ~9 on the Mohs scale (second only to diamond)

• Purity: >99% Al₂O₃ (low iron content)

• Color: White (non-contaminating)

• Chemically inert and corrosion-resistant

• High melting point: ~2,050°C

• Primary Use: Grit blasting for cleaning, deburring, and etching surfaces (especially non-ferrous metals).

• Why Use White Grit:

  • Non-contaminating (ideal for stainless steel, aluminum, titanium)

  • Produces uniform surface profile

  • Leaves no residues, ideal for pre-coating treatments

• Cleaning turbine blades, engine parts

• Surface prep for plasma spray coating, painting, or adhesive bonding

• Matting glass or ceramic surfaces

• Used in:

  • Grinding wheels

  • Sanding belts

  • Lapping compounds

  • Polishing pastes

• 80M Grit is suitable for medium-to-fine surface finishes on:

  • Steel tools

  • Glass components

  • Precious metals

  • Ceramic parts

• As filler or raw material in high-performance ceramics and refractory bricks due to:

  • High melting point

  • Thermal shock resistance

• Applications:

  • Kiln furniture

  • Crucibles

  • Insulating bricks

• Alumina grit is embedded into epoxy coatings, resin floors, or tiles to improve:

  • Abrasion resistance

  • Anti-slip properties

• Grit 80M offers a balance between grip and cleanability.

• Used in decorative laminates (e.g., countertops, panels) for:

  • Surface hardness

  • Scratch resistance

  • Improved durability

• Acts as a filter media in high-temperature or corrosive fluid systems where other materials fail.

• Also used in water purification systems as a non-reactive, inert support layer.

• Used as a shell material or mold additive in investment casting due to:

  • Thermal stability

  • Non-wettability with molten metals

• Ensures smooth casting surfaces, especially in aerospace or medical applications.