Product Details:
| Minimum Order Quantity | 50 Kilogram |
| Grit Size | 46 mesh |
| Alumina Purity | 95 % |
| Grade | Brown |
| Packaging Size | 25KG |
| Hardness | 9.5 Mohs |
| Usage | Anti Skid Flooring, Surface Prep, Sand Blasting, Grinding, Polishing, Lapping |
| Brand | Astrra Chemicals |
| Color | Brown |
| Melting Point | 2,072 Deg C |
| Form | Powder |
| Formula | Al2O3 |
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 coatings, runways, 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
Product Details:
| Minimum Order Quantity | 50 Kg |
| Packaging Size | 25-50 kg/bag |
| Packaging Type | HDPE Bag |
| Form | Powder |
| Usage/Application | Industrial |
| Color | Black |
| Ph Value | 10-12 |
Copper slag is widely used as an abrasive in open-blast cleaning and surface preparation, especially in industrial and marine sectors. It is a byproduct of copper smelting, characterized by its hardness, angularity, and low dust generation, making it an efficient and eco-friendly blasting medium.
�� Key Applications in Blasting:Surface Preparation Before Coating or Painting
Cleans rust, scale, old paint, and corrosion from steel surfaces.
Prepares surfaces for better adhesion of paints, epoxies, or coatings.
Shipbuilding and Ship Repair Yards
Used for cleaning ship hulls, decks, and tanks before repainting or maintenance.
Oil & Gas Industry
Cleans pipelines, storage tanks, and offshore platforms prior to corrosion protection.
Steel Structures and Bridges
Removes contaminants and prepares steel surfaces for protective coatings.
Foundry & Heavy Engineering
Used in blast chambers for cleaning large components and casting molds.
High cleaning efficiency due to angular particles
Low dust generation (improves visibility & safety)
Reusable (2–3 cycles depending on use)
Non-toxic, environmentally friendly alternative to silica sand
Compatible with dry and wet blasting systems
Additional Information:
Product Details:
| Minimum Order Quantity | 50 Kilogram |
| Packaging Size | 25-50 kg/bag |
| Physical State | Granules |
| Color | Brown |
| Brand | Astrra Chemicals |
| Packaging Type | HDPE Bag |
| Form | Powder |
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
Additional Information:
Product Details:
| Grain Size | 0.2–0.5 mm |
| Purity % | 99.5%+ |
| SiO2 Content | 90% |
| SiO₂ Content | ≥ 99% |
| Mesh Size | 150 Mesh |
| Purity Grade | Construction Grade |
| Grade | Sand M72 ( Brown ) |
| Packaging Size | 25 kg/bag |
| Usage/Application | Construction |
| Application | Foundry |
| Grade Standard | Industrial Grade |
| Packaging Type | HDPE Bag |
| Color | Brown |
| Material | Silica |
| Form | Powder |
| Brand | Astrra Chemicals |
We are the leading manufactures, exporters,technical developers and suppliers Silica Sand in Chennai, Tamil Nadu,
Uses & Applications of Off White / White Silica Sand (Washed & Dried):
Off-white or white silica sand that is washed and dried is a high-purity, low-moisture industrial material used across various industries due to its high silica content (SiO₂), uniform grain size, and low impurities.
1. Construction IndustryTile Adhesives & Grouts: Acts as a filler to improve bonding strength and workability.
Flooring Compounds: Enhances anti-skid properties and adds bulk.
White Cement / Mortars: Used to maintain color consistency and brightness.
Precast & Decorative Concrete: Preferred for its light color and uniformity.
Flat Glass / Container Glass: Raw material for clear and colored glass products.
Specialty Glass: Optical and laboratory glass where purity is critical.
Core & Mould Making: Offers excellent thermal resistance and mold integrity.
Casting of Non-ferrous Metals: Its cleanliness helps in reducing defects.
Water Filtration Plants: Used in multi-grade filter beds due to its chemical inertness and particle uniformity.
Swimming Pools / Aquariums: Maintains water clarity.
Matting Agent: Improves abrasion resistance and reduces gloss.
Texture Finishes: Adds grit to textured paints and plasters.
Golf Courses & Synthetic Turf: Top dressing and infill material.
Sand Pits & Playgrounds: Clean and safe material for children’s play areas.
Acts as a vitrifying agent and contributes to strength and durability.
Used in sandblasting, surface preparation, and polishing applications.
Functions as a reinforcing filler and rheology modifier.
Proppant in Hydraulic Fracturing: Holds fractures open to facilitate oil/gas flow.
Additional Information:
Product Details:
| Minimum Order Quantity | 100 Kg |
| Brand | Astrra Chemicals |
| Usage/Application | Industry |
| Packaging Type | Poly Bag |
| Physical Form | Powder |
| Color | Brown |
| Packaging Size | 25 kg/bag |
| Foem | Powder |
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)
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
Product Details:
| Minimum Order Quantity | 100 Kilogram |
| Packaging Size | 25 kg/bag |
| Brand | Astrra Chemicals |
| Grade | Grit 16 |
| Color | Brown |
| Material | Al2o3 |
| Chemical | Aluminium Oxide |
| Sizes | Grit 16 |
| Form | Powder |
| Usage/Application | Sand Blasting |
We are an eminent organization, which is engaged in manufacturing, exporting and technical developers of highly pure Aluminium Oxide Brown ( Grit - 16 )
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)
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
Additional Information:
Product Details:
| Minimum Order Quantity | 100 Kilogram |
| Brand | Astrra Chemicals |
| Packaging Size | 25 kg/bag |
| Physical Form | Powder |
| Chemical Formula | Al2O3 |
| Melting Point | 2,072 Deg C |
| Boiling Point | 2,977 Deg C |
Customers can get pure Dental blasting media Aluminium Oxide Pure White from us. This range is processed under the guidance of sedulous team members who process the same using high-grade ingredients and chemical compounds. Moreover, we pack these products in well-sealed packaging, thereby avoiding any kind of tampering during transportation.
Specific Attributes:
Certificate of analysis:
Al2O3 | 99.0% |
Fe2O33 | 0.009 – 0. 012% |
SiO2 | 0.01 – 0. 015% |
TiO2 | - |
Na2O | 0. 35 – 0. 45% |
L.O.I. ( AT 1100 DEG. C) | 0. 6 – 0. 8 |
a – Al2O3 phase | <5% |
+ 325 mesh | 90% |
Specific Gravity, g/cc | 3. 4 – 3. 6 |
Median Particle Size ( micron ) d50 | 70 – 85 |
Bulk density ( g / cc ) | 0. 9 – 1.1 |
Product Details:
| Minimum Order Quantity | 100 Kg |
| Packaging Size | 25 kg/bag |
| Color | White |
| Brand | Astrra Chemicals |
| Packaging Type | HDPE Bag |
| Physical Form | Powder |
| Magnetism Material | 0.0011% |
Aluminium Oxide White — also known as White Fused Alumina (WFA) — is a high-purity abrasive made from fusing alumina (Al₂O₃) in electric arc furnaces. 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.
�� Key Properties of Aluminium Oxide White (80M Grit)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.