Astrra Chemicals
Astrra Chemicals
Chennai, Tamil Nadu
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Brown Fused Alumina

Leading Manufacturer of brown fused aluminum oxide grains in chennai, brown alumina emery powder and emery powder from Chennai.

Brown Fused Aluminum Oxide Grains in chennai

Brown Fused Aluminum Oxide Grains in chennai
  • Brown Fused Aluminum Oxide Grains in chennai
  • Brown Fused Aluminum Oxide Grains in chennai
  • Brown Fused Aluminum Oxide Grains in chennai
  • Brown Fused Aluminum Oxide Grains in chennai
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Approx. Price: Rs 93 / KilogramGet Latest Price
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Product Details:

Minimum Order Quantity100 Kilogram
BrandAstrra Chemicals
Density3.95 g/cm3
ColorBrown
FormPowder
Molar Mass101.96 g/mol
Grit60

ALUMINIUM OXIDE ( GRIT - 60 )

We are the leading manufactures, exporters,technical developers and suppliers of  ALIMINIM OXIDE 
( GRIT - 60 ) Powder in Chennai, Tamil Nadu, 

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

🔶 What is Brown Aluminium Oxide?

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)

🛠️ Primary Applications:1. Abrasives Industry
  • 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.

2. Refractory Industry
  • 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.

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

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

4. Metalworking
  • Lapping & honing: In precision metal finishing.

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

5. Anti-Skid Surfaces
  • Used in floor coatingsrunways, and steps for enhancing traction and preventing slips.

6. Ceramic & Tile Industry
  • As a raw material additive to improve wear resistance and strength of ceramics.

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

✅ Advantages of Brown Aluminium Oxide:
  • High hardness and toughness

  • Reusable in blasting applications

  • Thermally stable at high temperatures

  • Electrically non-conductive

  • Cost-effective compared to White Fused Alumina

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Brown Alumina Emery Powder

Brown Alumina Emery Powder
  • Brown Alumina Emery Powder
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Approx. Price: Rs 98 / KgGet Latest Price
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Product Details:

Minimum Order Quantity100 Kg
Weight50 Kgs
Packaging Size50 kg/bag
ColorBrown
BrandAstrra Chemicals
Magnetic Material0.0035%
Refractory DegreeAbout 1800 deg C

Brown Fused Aluminium Oxide (BFA) is a highly durable and tough abrasive made by fusing bauxite in an electric arc furnace. It is commonly used in emery applications due to its excellent hardness (Mohs ~9), thermal resistance, and sharp cutting ability.

Uses & Applications of Brown Fused Aluminium Oxide for Emery Applications1. Abrasive Papers & Emery Cloths
  • Used as the primary abrasive in emery paper, emery cloth, and abrasive rolls.

  • Suitable for grinding, polishing, and surface finishing of metals, wood, plastic, and ceramics.

  • Offers consistent grain size and sharp cutting edges, enhancing surface finishing quality.

2. Coated Abrasives
  • Coated onto flexible backings (paper, cloth, or film) for sanding belts, sheets, and discs.

  • Ideal for manual and machine sanding processes in metal fabrication, woodworking, and automotive sectors.

3. Bonded Abrasives (Emery Wheels)
  • Used in the manufacture of grinding wheels and cutting discs.

  • Performs well in heavy-duty grinding applications for carbon steel, alloy steel, and cast iron.

4. Hand Tools and Emery Boards
  • Embedded into emery boards and nail files in the cosmetic and personal care industry.

  • Also used in hand-held abrasive tools for fine finishing or deburring.

5. Surface Preparation
  • Employed in the preparation of surfaces before painting or coating (metal degreasing and rust removal).

  • Used in grit blasting or shot blasting where consistent surface texture is needed.

6. Precision Lapping & Honing
  • Used in lapping compounds and honing tools where precision material removal is required on flat or cylindrical surfaces.

7. Refractory & Anti-skid Surfaces (Secondary Use)
  • Sometimes added to anti-slip surfaces and high-wear flooring tiles due to its extreme hardness.

⚙️ Key Properties Making BFA Ideal for Emery Applications
  • High hardness (~Mohs 9)

  • High thermal resistance

  • Angular shape for aggressive cutting

  • Reusable in blasting and durable in bonded/ coated tools

  • Chemically stable and resistant to corrosion

 

 

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Emery Powder

Emery Powder
  • Emery Powder
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Approx. Price: Rs 98 / KilogramGet Latest Price
Product Brochure

Product Details:

Minimum Order Quantity50 Kilogram
Packaging Size25KG
ColorBrown
BrandAstrra Chemicals
FormPowder
Usage/ApplicationIndustry
Tapped density0.8930 gm/l

Brown Fused Aluminium Oxide (BFA) is a highly durable and tough abrasive made by fusing bauxite in an electric arc furnace. It is commonly used in emery applications due to its excellent hardness (Mohs ~9), thermal resistance, and sharp cutting ability.

Uses & Applications of Brown Fused Aluminium Oxide for Emery Applications 1. Abrasive Papers & Emery Cloths
  • Used as the primary abrasive in emery paper, emery cloth, and abrasive rolls.

  • Suitable for grinding, polishing, and surface finishing of metals, wood, plastic, and ceramics.

  • Offers consistent grain size and sharp cutting edges, enhancing surface finishing quality.

2. Coated Abrasives
  • Coated onto flexible backings (paper, cloth, or film) for sanding belts, sheets, and discs.

  • Ideal for manual and machine sanding processes in metal fabrication, woodworking, and automotive sectors.

3. Bonded Abrasives (Emery Wheels)
  • Used in the manufacture of grinding wheels and cutting discs.

  • Performs well in heavy-duty grinding applications for carbon steel, alloy steel, and cast iron.

4. Hand Tools and Emery Boards
  • Embedded into emery boards and nail files in the cosmetic and personal care industry.

  • Also used in hand-held abrasive tools for fine finishing or deburring.

5. Surface Preparation
  • Employed in the preparation of surfaces before painting or coating (metal degreasing and rust removal).

  • Used in grit blasting or shot blasting where consistent surface texture is needed.

6. Precision Lapping & Honing
  • Used in lapping compounds and honing tools where precision material removal is required on flat or cylindrical surfaces.

7. Refractory & Anti-skid Surfaces (Secondary Use)
  • Sometimes added to anti-slip surfaces and high-wear flooring tiles due to its extreme hardness.

⚙️ Key Properties Making BFA Ideal for Emery Applications
  • High hardness (~Mohs 9)

  • High thermal resistance

  • Angular shape for aggressive cutting

  • Reusable in blasting and durable in bonded/ coated tools

  • Chemically stable and resistant to corrosion


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Sanklesh Chabria (Managing Partner)
Astrra Chemicals
No.532/1B 3, Vanagaram Road, Ambattur, Chennai - 600053, Tamil Nadu, India
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