Coated abrasives

Solutions for coated abrasives that last

In coated abrasives, the abrasive grain is bound using adhesives to a flexible substrate base material that is either cloth or paper based. These often take the form of flexible grinding belts or sheets for use in sanding or die grinding operations.  

Fused aluminum oxides are especially well suited for use in coated abrasives. These synthetic hard minerals are based on α-aluminum oxide. They are produced in electric arc furnaces by electrothermal fusion at temperatures around 2000°C. They show a value of 9 on the Mohs scale of hardness, placing them virtually in the same category as - and close to - diamond (Mohs 10), the hardest known substance. This very high hardness, combined with its excellent thermal and chemical stability, sharp edges and a high degree of mechanical strength, means fused aluminum oxide grits are mainly used as abrasive particles in grinding, machining and cutting operations.

We offer a wide range of Alodur® electrofused fused aluminum oxide base products, both macro- and micro-sized, for all kinds of coated abrasives:

Sol-Gel

In addition to those well-established Aldour® electrofused aluminum oxide types, we are also offering abrasive grain manufactured by a sol-gel process. The specific microstructure results in a unique aggressive grinding performance, which combines the high toughness and high hardness of the grain with the ability of optimised self-sharpening. This special abrasive grain structure allows in all applications and most varied pressure ranges a universal usage at the highest cutting rates and longest tool lifetime.

Additional information about other available Sol-Gel types is available on request.

All our types and grains are sized in accordance with the current FEPA (Fédération Européenne des Fabricant de Produits Abrasifs) or ANSI (American National Standard Institute) standards.

Grain shape & treatments

Our products are available with various treatments and coatings (such as bluefiring or ceramic coating), and in various grain shapes (very pointed, angular, or blocky), depending on their particular grinding application. The grain shape is determined by measuring their bulk density using the FEPA method.