80% Al2O3 Black Fused Alumina Abrasive Materials
Black Fused Alumina Introduction:
Black fused alumina is also called black aluminum oxide or black corundum. It is a new type of polishing materials. It is a dark gray crystal, melted in electric arc furnaces by using the bauxite as its raw material. Black fused alumina is characterized by low Al2O3 and a certain amount of Fe2O3 (10% more or less) content, so 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, optical glass, and it is also new abrasive for manufacturing resin grinding wheel, cut-off wheels and emery cloth. The black fused alumina of concentrated basic tablets, with the characteristics of strong cutting power, high toughness, high flexibility, good abrasion resistance and high working efficiency, which is the best product for grinding and polishing, sandblasting stainless steel products.
Black Fused Alumina Chemical Analysis:
Main Chemical Composition %
Black Fused Alumina Physical Properties:
Melting point (°C)
The maximum temperature (°C)
True Density (g/cm3)
≥ 3. 50
Linear expansion coefficient (0-1600 °C)
Black Fused Alumina Applications:
• For abrasives, such as ceramic grinding wheels, resin grinding wheel, sandpaper, abrasive cloth, abrasive belt, etc.
• For anti-slip road surface preparation
• Polishing and sandblasting of stainless steel
• Refractory materials in high-temperature resistance in steel metallurgy
Black Fused Alumina Available Grain Size:
2360 ~ 2000
710 ~ 600
212 ~ 180
2000 ~ 1700
600 ~ 500
180 ~ 150
1700 ~ 1400
500 ~ 425
150 ~ 125
1400 ~ 1180
425 ~ 355
125 ~ 106
1180 ~ 1000
355 ~ 300
106 ~ 75
1000 ~ 850
300 ~ 250
90 ~ 63
850 ~ 710
250 ~ 212
75 ~ 53
1M/T big bag or 25kgs bag, Pallet available
1.Professional manufacturer, more than 20 years experiences
2.Ensure clients stable quality
3.Having our own testing laboratory which guarantees products quality
4.Available to deliver samples to clients before place an order. Trail order for testing is also workable.
5.Production capacity: over 40, 000 tons per year.
6.Available to customize according to clients specifications.
Welcome to buy the 80% al2o3 black fused alumina abrasive materials with our professional manufacturers and suppliers in China. Our abrasive & refractory material products for sandblasting and coated and bonded abrasives comes in high quality and low price. Check the quotation and get the free sample now.