Depending on the content of aluminium oxide (Al2O3) and the method obtaining corundum can be:
Brown Corundum belongs to the group of electro-corundum. It is produced bycontrolled melting of calcined bauzite in an electric arc furnace. Brown fused alumina is iron-free and extremly tough.
Noble Corundum - because 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. An abrasive material for the most demanding applications.
Brown Corundum
Noble Corundum
Specific mass
3,96 kg/l
3.92 kg/l
Volumetric mass
1.75 kg/l
Hardness according to Mohs
9 Mohn
Hardness according to Knoop
1800 N/mm2
2100 N/mm2
Form
Angular
Chemical composition
Al2O3 - 95,20%
TiO2 - 2.90%
Fe2O3 - 0,20%
SiO2 - 1,30 %
CaO + MgO - 0,40%
Al2O3 - 99,81%
CaO - 0,05%
Fe2O3 - 0,035%
Na2O - 0,11%
SiO2 - 0,02%
TiO2 - 0,04%
Packaging / delivery
Paper bags
25 kg/bag
Minimum quantity deliverable – 25 kg
Granulations available
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
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.
