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- Fused Aluminum Oxide Synonyms:
Al2O3, fused aluminum oxide powder, white corundum, white aluminum oxide powder, pink aluminum oxide powder, brown aluminum oxide powder, alumina, corundum, sapphire, ruby, aloxite, CAS# 1344-28-1
Chemical Name: Aluminum oxide
Chemical Formula: Al2O3
a) Alumina produced by heating a mixture of calcined bauxite or a relatively pure grade of Al2O3 with iron borings to temperatures above 1980 deg. C in an electric arc furnace; grains of increased toughness may be obtained by the addition of TiO2.
b) Aluminium oxide is an amphoteric oxide of aluminium with the chemical formula Al2O3. It is also commonly referred to as alumina, corundum, sapphire, ruby or aloxite in the mining, ceramic and materials science communities. It is produced by the Bayer process from bauxite.
Purities are available from as high of a typical purity of 99.999% down to 90+%.
Numerous grit / mesh / micron particle size options are available from READE as large as a nominal sized 50 mm tumbling media down to as small as nano particles sized 20-100 nanometers.
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Molecular Weight (g/mol.)
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40.98828
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Reactivity
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Inert
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pH (Alkaline)
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~ 8
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Fusion Point (°C)
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2040
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Odor
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No odor
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Porosity (%)
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6.7
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Crystalline Structure
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Alpha-alumina macro crystals from trigonal class, hexagonal system
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Knoop 100 Hardness
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2150
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Mohs Hardness
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9
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Color
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Various
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Particle Shape
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Blocky, sharp edged
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Specific Gravity
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3.77
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Bulk Density (g/cm³)
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3.61
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Toughness (ANSI-B.74.8.1987)
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38
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a) Used in bushings, spindles, and other applications where excellent abrasion resistance is required.
b) Also used in operations such as lapping, polishing, refractory coating for investment casting shells, decorative non-skid tile, and pressure blasting
Jars, pails, drums, multiply paper bags, bulk bags and fiberboard containers
CAS# 1344-28-1
3132
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