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Abrasive blasting sand black corundum for grinding and polishing

Basic Info

Model No.: hy30

Product Description

Abrasive blasting sand black corundum for grinding and polishing






Black Fused Alumina is also known as low aluminum corundum. It is also a new type

 product of polishing material, and it is a dark gray crystal body made Al2O3 and

ferropicotite as main ore in the electric arc furnace by smelting the bauxite. It has

characteristics of moderate hardness, high toughness, high temperature resistance,

 and stable thermal stability








Grade A

85 %

9 %

≤ 6 %

Grade B

80 %

10 %

≤ 10 %

Hardness (mohs )

≥ 90

Melting point (°C)


True density (g/cm3)

≥ 3.50

Linear expansion coefficient






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


Packaging & Shipping


Contact us if you need more details on Black Corundum for Grinding and Polishing. We are ready to answer your questions on packaging, logistics, certification or any other aspects about Abrasive Blasting Sand、Black Sand Price. If these products fail to match your need, please contact us and we would like to provide relevant information.

Product Categories : Abrasive & Refractory > Black Fused Alumina

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