Brown aluminium oxide/brown fused alumina(A)
1.Introduction
Brown aluminium oxide is fused and crystallized under high temperature from a mixture of bauxite and other and other raw materials. It is characterized by its high hardness,good toughness and shape in size.
2. The size we can supply
Abrasives grade
Grit size: 16#,20#,24#30#,36#,46#,54#,60#,80#,100#,120#,150#,180#,220#
Micropowder:240#,280#,320#,360#,400#,500#,600#,800#,1000#,1200#,1500#
2000#,2500#,3000#,4000#
3. Chemical coposition
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Purpose
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Specification
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Chemical Composition(%)
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Magnetic material content(%)max
|
||||
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Abrasives grade
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Al2O3min
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Fe2O3max
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SiO2max
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TiO2max
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|||
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grain
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12-80
|
95
|
0.3
|
1.5
|
3.0
|
0.05
|
|
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90-150
|
94
|
0.3
|
1.5
|
3.0
|
0.03
|
||
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180-220
|
93
|
0.3
|
1.5
|
3.5
|
0.02
|
||
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micropowder
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240-4000
|
92.5
|
0.5
|
1.8
|
4.0
|
—
|
|
4. Physcial coposition
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color
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Dark brown
|
|
Hardness(mohs)
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9.0
|
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Melting point(°C)
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2250
|
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Maximum service temperature(°C)
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1900
|
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Ture density(g/cm3)
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3.9
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5.Application
Abrasives tools made of it are suitable for grinding metals of high-tensile strength such as: carbon steel,general-purpose alloy steel,annealed malleable iron and hard broze,etc.It also can be used as refractory materials.