Buy Aluminum Oxide Brown With Regular And Sharp Edged Grain Shape

Place of Origin Changsha China
Brand Name Fine-tech
Certification ISO9001
Model Number F40
Minimum Order Quantity 500KG
Price Negotation
Packaging Details 25kg/barrel, 25kg/bag, 1t/pallet
Delivery Time 5-15 work days
Payment Terms L/C, T/T
Supply Ability 2000t per year

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Product Details
Color Brown PH Neutral (7.0)
Chemical Formula Al2O3 Crystal System Trigonal
Hardness 9 Mohs Melting Point 2072°C
Crystal Structure Trigonal Hexagonal
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Sharp Edged Aluminum Oxide Brown


Trigonal Aluminum Oxide Brown

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Product Description

Product Description:

Brown Fused Alumina has the characteristics of high purity, good crystallization, strong fluidity, low coefficient of linear expansion, and corrosion resistance. In addition, its application process features no explosion, no chalking, and no cracking, far better than the cost-effectiveness of traditional brown corundum. It is proven to be the best aggregate and filler for fused alumina refractories.


This product is produced by fusion of bauxite in a tilting electric arc furnace at high temperatures. It has an array of concentration-worthy features, including high temperature resistance, strong erosion resistance, high machinery strength, thermal stability, as well as great hardness and toughness. Therefore, it is very suitable for the manufacturing of shape refractories.


Brown Aluminum Oxide is fired with premium raw materials and 3500 KVA furnace, and perfect as a general abrasive material in bonded abrasive tools, polishing and sandblasting. Although having lower hardness and abrasive capacity than diamond, boron carbide, and silicon carbide, Brown Aluminum Oxide is extremly popular for grinding ferrous material and finishing tough and hard materials. It is also widely used as a high-class refractory material and can be found in both F and P grade in macro and micro powder form.



Brown corundum was used as sandblasting surface treatment, because of its relatively high density, so that is less dust in the process of sandblasting. This ensures operator health and safety, at the same time it can improve operator visibility.


Brown corundum, under a certain pressure, can quickly impact the surface of the object with a large number of sharp edges, so it is regarded as a very fast spray grinding method. The acceleration and velocity of particles in the air flow are a function of inertance and particle size. The smaller the particle, the easier it is to accelerate and thus produce a higher impact force on the surface of the object, so that resulting in a very high cleaning rate, usually twice as fast as other conventional abrasives.


Brown corundum is very suitable for many fields. Normally, it can be reused several times. If it has not lost its cutting ability after the first time, the number of cycles can be more. Without cutting ability, brown corundum can also be recycled and applied to the construction industry as cement additive.


Technical Parameters:

Chemical formula: Aluminum oxide (Al2O3)

Physical state: Solid/crystalline. It has a brown color and a Mohs hardness of 9.

Melting point: 2045°C (3723°F), boiling point: ~2980°C (5400°F), density: 3.9 g/cm³, and refractive index of 1.76.

Specific heat capacity: 0.88 J/gK and a thermal conductivity of 30.0-35.0 W/mK at room temperature.

Mohs scale of mineral hardness: 9 and bulk density of 1.57-1.65 g/cm³. The grain shape is regular and sharp-edged. It is non-magnetic and a Mohs hardness scale of abrasives of 9.

Crystal structure: Trigonal hexagonal with a particle size of 12-1200 micro-meters (μm). The chemical composition is Al2O3 (95%+), SiO2 (<1.5%), MgO (<1.4%) and free iron content is typically below 0.11%.

Refractoriness: Above 1900°C, pH: Neutral (7.0), solubility: soluble in hydrofluoric acid and sulfuric acid, and flame resistance: highly flame resistant.

Electrical conductivity: Insulator (non-conductive), water-soluble salts content: <0.3%, cleaning characteristics: non-polluting, coefficient of thermal expansion: 8x10-6/°C, mechanical strength: high, chemical stability: high, thermal shock resistance: high, high strength: high.



Brown Corundum is an abrasive that is used in a wide range of industrial production operations. It is ideal for cutting complex shapes in a variety of materials and is often used in precision casting for the aerospace, automotive, and medical industries. Brown Corundum is an extremely heat resistant material, making it well-suited for lining materials for furnaces and kilns. It is also used as a grinding paste, binding agent for diamond grinding wheels, and coated abrasives for surface finishing and material removal operations.


Brown Corundum is often used in ultrasonic grinding, which is a non-contact machining process, as well as for stone materials cutting. It is also an effective dry sanding material and is used in non-skid flooring materials to provide traction and prevent slips and falls. With its wide range of applications, Brown Corundum is an essential material in a variety of industrial production operations.



Brown Aluminum Oxide - Fine-tech F40

Fine-tech offers high quality brown aluminum oxide (F16) with ISO9001 certification. This type of brown fused aluminium oxide has a colour of aluminium oxide and is used for abrasive applications. It is characterized by its refractive index of 1.63-1.76, a pH of 7.0-8.5, a refractoriness of above 1900°C, an Al2O3 content of ≥95%, and a hardness of 9 Mohs.


This product is available in 500KG minimum order quantity with flexible price negotiations. It is packaged in 25KG/barrel, 25KG/bag and 1T/pallet. Delivery time is 5-15 working days and accepted payment terms include L/C and T/T. Fine-tech has an annual supply capacity of 2000T.


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