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Black Fused Aluminum Oxide

Black fused aluminum oxide is produced by smelting bauxite, iron oxide, and other elements. It offers moderate hardness, high toughness, excellent heat resistance, thermal stability, and self-sharpening. Widely used in abrasives, high-temperature processes, and wear-resistant coatings, it’s an ideal choice for diverse industrial applications.

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Physical properties

Crystal Form:

Trigonal System

Hardness:

9 mohs

2000-2200 kg/mm² (Vickers）

Grain shape:

angular

Melting point:

approx. 2050°C

True Density：

≥3.50 g/cm3

Typical chemical analysis

 

General

Special

Al2O3:

≥62%

≥80%

TiO2:

2-4%

2-4%

Fe2O3:

6-12%

4-8%

SiO2:

≤25%

≤10%
Available grain sizes (Average grain size)
FEPA Nr JIS Nr
F 08 #8 F 90 #120
F 10 #10 F 100 #150
F 12 #12 F 120  #180
F14 #14 F 150 #220
F 16 #16 F180 #240
F 20 #20 F220 #280
F 22 #24 F230 #320
F 24 #30 F240 #360
F 30 #36 F280 #400
F 36 #46 F320 #500
F 40 #54 F360 #600
F46 #60 F400 #800
F 54 #70 F500 #1000
F 60 #80 F600 #1200
F 70 #90 F800 #1500
F 80 #100 F1000 #2000

Application areas (including but not limited to)

  • Metal Products

    Black fused aluminum oxide is used for polishing metal products, especially stainless steel, to achieve a high level of surface smoothness with minimal discoloration.

  • Resin Grinding Wheels

    Black fused aluminum oxide is utilized for grinding and polishing workpiece surfaces, providing a cutting action to remove irregularities, burrs, and scratches, and delivering a smooth and precise machining result.

  • Road Construction

    Black fused aluminum oxide finds application in road abrasives for pavement repair, road surface anti-skid treatment, and other related applications.

  • Other Applications

    Black fused aluminum oxide is used in various applications, including sanding belts, polishing wheels, fiber wheels, anti-skid surface materials, and more.

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White Fused Alumina Macro

White Fused Alumina Macro

White fused alumina macro,also referred to as white fused alumina grain-size sand, are produced by refining high-quality alumina powder through the process of electromelting and meticulous sieving.
White Fused Alumina Micro Powder

White Fused Alumina Micro Powder

White fused alumina micro powder is produced by melting and cooling high-quality alumina powder in an electric arc furnace at temperatures above 2000°C to form white fused alumina blocks.

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