Black Corundum

Black Corundum is a new type abrasives material which features lower Al2O3 and certain grade of Fe2O3.And it has characteristics of moderate hardness,high toughness,high temperature resistance,and stable thermal stability.

Suitable for polishing metals, sandblasting and making abrasives tools.
It’s also the right material for making abrasive tools: Fiber-reinforced cutting wheels, grinding wheels, sand cloth, paper and paste and so on.

Black Corundum

Specifications of the sandblasting black corundum:

Name Black corundum
Commonly used specificationPeriod of sand: 0-1, 1-3, 3-5, 5-8 (mm)Particle size of sand: FEPA Standard16,20,24,30,36,46,60,80,100,120,150,180,200,320. (mesh)
proportion of appearance3.5g/cm3 Black granular.
raw materialsThe bauxite in electric arc furnace smelting and become a kind of is given priority to with alpha AL2O3 and spinel mineral phase – colored crystals.
production processRaw material sorting-electrolytic refining – crushing – in addition to the iron magnetic separation-screening-physical and chemical inspection-finished product packaging-warehousing
performance featureBasic particle concentration, low linear expansion coefficient, good toughness, high grinding ratio.
UseStainless steel, metal, glass, wood products sand blasting, polishing, grinding wheel, cutting slices, sandpaper.
indicatorsAL2O3 content is 85%, SiO2 content 5-8%, Fe2O3 content of 6-9%, content of TiO2 2-4%, true density of 3.5 g/cm after, the highest melting point temperature 1850 , 2050  1600  when the linear expansion coefficient of 7-9.

● For free grinding, such as glass industry
● For non-slip of airport and road, chemical factory board paving
● For produce ceramic grinding wheel, resinoid grinding wheel, grinding stone,
● For free grinding, such as coarse grinding before electroplating products.
● For polishing and sandblasting of stainless steel, fabricated metal products.
● For investment casting technics of stainless steel and aluminum casting in coating.
● For sand paper, sand cloth, sand belt, Polish wax, abrasive paste, coating etc…
● For abrasion and high temperature resistant in steel metallurgy, various industrial stoves

● For various material workpieces to decontaminate, prevent corrosion, remove oxide skin

Black Corundum

Shipping Package

pvc bagspaper bagsjumbo bagsjumbo bagspvc bag+palletpaper bag+pallet
25kg net25kg net1000kg1500kg1000kg1000kg

Other package also could be supplied as required.

Good quality black corundum with competitive price [USD350~500/Ton FOB Tianjin] from China manufacturer.


1. The sample will be send by International expresses FEDEX/DHL/UPS/TNT.

2. Full container Load(FCL): By vessel Or International Railway Transportation

3. Less Than Container Load(LCL): By vessel or By air


1. Payment: T/T, Western Union, LC, Paypal.

2. MOQ: Usually 1Tons

3. Quality Warranty: 1 years

After Sales Service:

1).We are very glad that customer give us some suggestion for price and products.

2).If any question, please let us know it by E-mail or Telephone at the first time. We can deal with them for you in time.

Black Fused Alumina Tags:
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