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Good Hardness Black Aluminum Oxide Media , Black Corundum Sand High Flexibility

Minimum Order Quantity : 5 tons Price : Negotiable
Packaging Details : 25kgs/pvc bag,1 MT/Jumbo Bag Delivery Time : 15~20 working days
Payment Terms : L/C, T/T Supply Ability : 1000tons/month
Place of Origin: China Brand Name: Yichang
Certification: ISO Model Number: F14-F1500

Detail Information

Color: Black Usage: Polishing,Sandblasting,grinding
Material: Aluminum Oxide Name: Black Fused Alumina,Black Fused Corundum
Hardness: 9.0 Mohs Scale Shape: Granular,Grain
Al2o3: 85%
High Light:

black aluminum oxide media


black aluminum oxide blast media

Product Description

Black Corundum sand for grit blasting media with good hardness


Black Fused Aluminum Oxide grit for Metal surface cleaning abrasives media Black Aluminum Oxide/Black fused alumina/Black Corundum is characterized by low Al2O3 and a certain amount of Fe2O3 (10% more or less) content, so Black corundum has characteristics of moderate hardness, high toughness, high temperature resistance, and stable thermal stability.what's more black fused alumina with the characteristics of strong cutting power, high toughness, high flexibility, good abrasion resistance and high working efficiency, It is the best product for grinding and polishing, sandblasting stainless steel products.


Black fused alumina is made of bauxite and Fe2O3 in tilting electric furnaces.

It has characteristics of moderate hardness, high toughness, high temperature resistance, and stable thermal stability. It is mainly suitable for free grinding, such as coarse grinding before electroplating products, mainly for polishing and sandblasting of stainless steel, fabricated metal products.



1.The processing of workpieces with black corundum is not only fast processing but also high quality.

2.The use of black corundum will not affect the color of the workpiece

3.The black alumina produced in titling electric arc furnace has the advantage of high bulk density and low porosity and the volume stability and thermal shock resistance can be improved.

Chemical Analysis:

Specifications Main Chemical Composition %
Al2O3 Fe2O3 SiO2
BA-1 81-85 9-11 ≤8
BA-2 75-80 10-12 ≤10

Physical Properties:

Item Indicators
Color Black
Crystal Trigonal system
Hardness (Mohs) ≥ 9.0
Melting point (°C) 2050
The maximum temperature (°C) 1850
True Density (g/cm3) ≥ 3. 50
Linear expansion coefficient (0-1600 °C) 7-9

1, freedom grinding, such as floor polishing before plating metal parts, aluminum products.
2, bicycle, motorcycle, sewing machine, clock parts.
3, lamp act the role ofing, plastic and hardware tools, such as polishing, is also suitable for
sandblasting (spray derusting, glass flower).
4, processing and manufacturing resin cutting, Angle grinding pills and coated abrasive, etc.
5, black corundum sand granularity and micro powder particularly suitable for grinding and
polishing of stainless steel workpieces and sharpening stone, grinding paste manufacturing.
6, black corundum sand antiskid pavement and coal mine under storage material of choice.

Available Size:
FEPA : F8- F1500

JIS: #8- #2000

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