Corundum

Depending on the aluminium oxide (Al₂O₃) content and production method, corundum abrasives are classified into different types:

Brown Corundum belongs to the electro-corundum family and is produced by controlled melting of calcined bauxite in an electric arc furnace. It is iron-free and extremely tough, making it ideal for general-purpose abrasive blasting and grinding applications.
Noble Corundum is a high-purity, angular, and extremely hard material. Due to its brittleness and very high melting point, it offers an aggressive abrasive effect, making it suitable for the most demanding industrial applications that require precision and durability.

From robust cleaning to precision blasting — choose the right corundum for your toughest jobs.
Contact us today for more details and expert recommendations!

	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

material 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.

Ask our experts!

Call us +40213060281