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Brown Corundum
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Noble Corundum
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Specific mass
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3,96 kg/l
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3.92 kg/l
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Volumetric mass
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1.75 kg/l
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Hardness according to Mohs
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9 Mohn
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Hardness according to Knoop
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1800 N/mm2
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2100 N/mm2
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| Form |
Angular
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Chemical composition
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Al2O3 - 95,20%
TiO2 - 2.90%
Fe2O3 - 0,20%
SiO2 - 1,30 %
CaO + MgO - 0,40%
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Al2O3 - 99,81%
CaO - 0,05%
Fe2O3 - 0,035%
Na2O - 0,11%
SiO2 - 0,02%
TiO2 - 0,04%
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Packaging / delivery
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Paper bags
25 kg/bag
Minimum quantity deliverable – 25 kg
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Granulations available
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F220 53-75 μm
F120 90-125 μm
F100 106-150 μm
F90 150-200 μm
F80 150-212 μm
F70 180-250 μm
F60 212-300 μm
F46 300-425 μm
F40 355-500 μm
F36 425-600 μm
F30 500-710 μm
F24 600-850 μm
F22 600- 1000 μm
F20 850-1180 μm
F16 1000-1400 μm
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- materrial chemically inert;
- very aggressive due to the high durity;
- relatively long lifetime for its segment of use.
Depending on the content of aluminium oxide (Al2O3) and the methodobtaining corundum can be:
- Brown Corundum is included in the electro-corundum group. It is produced bycontrolled melting of calcined bauzite in an electric arc furnace. The properties of the brown fused alumina are: iron-free and extremly tough.
- Noble Corundum - due to its angular shape and hardness, noble corundum abrasive has a powerfull effect, presents a highpurity is extremely hard, brittle and has a very high melting point. It is ideal abrasive material for the most demanding applications.
