Expendable abrasives

Expendable blast cleaning abrasives are used in so-called "open nozzle" blast cleaning.

Explore our portfolio of single-use abrasives. All products in our expendable abrasive range comply with ISO standards ISO 11126 and 11127 and contain less than 1% free crystalline silica.

Our expendable abrasives are mainly produced from carefully selected secondary raw materials. These are by-products of other industrial processes - reusing them saves valuable primary resources.

The expendable range includes:

  • Iron silicate (copperslag / nickelslag): NAstra®, Bekagrit, Fajalit and OK-Grit
  • Calcium silicate (iron furnace slag): Scorex®, ScorexPlus
  • Aluminium silicate (coal slag): Vasilgrit®, Vasilfine
  • Garnet: Minersiv®, Abracut®

See our expendable abrasives products.

Please also see our range of recyclable abrasives and special abrasives.

NAstra

NAstra® is an iron silicate (copper slag) abrasive. NAstra® is produced in accordance with DIN EN ISO 11126-3. It is a perfect blasting grit for blast cleaning steel, stone and concrete, and for the removal of mill scale, rust, old paint and dirt.

During melting of copper ore concentrates an iron silicate is formed. This is passing a groove and is granulated at a temperature of approximately 1250 °C, using a temperature-controlled pressurized water jet. After cooling down in a tank with fresh water, the fine particles are separated from the granulate manufactured in this way. It is a vitreous amorphous slag, it does not absorb water. During the manufacturing of the abrasive no crushing or grinding procedures are included. Therefore, the single abrasive particle is not broken up and retains its extreme hardness and tenacity which is the case for all particle sizes.

NAstra® used as blast cleaning abrasive for all application fields in conventional corrosion protection on almost all surfaces. It is suitable for surface preparation standards SA-3, SA-2½, SA-2 and SA-1. It is a non-hazardous material, containing less than 0,1% free crystalline silica.

Bekagrit

Bekagrit is an iron silicate blast cleaning grit made of granulated slag from metal melting processes (also called copper slag). Bekagrit is designed for blast cleaning of steel and stone/concrete surfaces, removal of mill scale, rust, old paint, dirt etc. Suitable for SA-3, SA-2½ and SA-2, as well as SA-1, also called sweep blasting.

Bekagrit is accurately processed and sized and complies with ISO standards 11126-3 and 11127. It contains less than 1% free crystalline silica.

Scorex

Scorex® is a blast cleaning grit made of iron furnace slag, also called calcium silicate. Scorex® is designed for blast cleaning of steel and stone/concrete surfaces, removal of mill scale, rust, old paint, dirt etc. Suitable for SA-3, SA-2½ and SA-2, as well as SA-1, also called sweep blasting. Very suitable for the cleaning of stone and concrete (facade cleaning). It has a very low heavy metal content and a nice natural colour.

Scorex® is accurately processed and sized and fully complies with ISO standards 11126-6 and 11127. It contains less than 1% free crystalline silica.

ScorexPlus

ScorexPlus is a blast cleaning grit made of a carefully constructed blend of high quality iron furnace slag and recycled sodium silicate glass. ScorexPlus is designed for blast cleaning of steel and stone/concrete surfaces, removal of mill scale, rust, old paint, dirt etc. Suitable for SA-3, SA-2½ and SA-2, as well as SA-1, also called sweep blasting and is also very suitable for stainless steel and aluminium as well as for different kinds of wood.

ScorexPlus is accurately processed and sized and fully complies with ISO standards 11126-6 and 11127. It contains less than 1% free crystalline silica.

OK-grit

OK-grit is a granulated iron silicate. It is an iron silicate blast cleaning abrasive made with nickelslag from the Boliden Harjavalta nickel smelter in Finland where it is pre-screened. At Sibelco Nordic’s Nakkila plant the raw material is dried, screened into different grain sizes and the dust is removed. OK-Grit is suitable for a wide range of blasting applications and also as a high-quality granule for the roofing industry. The material is produced in accordance with ISO 11126-5 and 11127.

It is used as blast cleaning abrasive for all application fields in conventional corrosion protection on almost all surfaces. Suitable for SA-3, SA-2½, SA-2 and SA-1.

Very suitable for use as roofing granules, as it is weather resistant and has uniform colour and grain size.

Fajalit

Fajalitis a granulated iron silicate material extracted at Boliden’s Rönnskär copper production facility in Sweden through a unique process called ‘fuming’ whereby the silicate is exposed to high temperatures, resulting in a very pure product. After drying, the material is then sieved to an optimum particle size for blasting. Fajalit can be used on most surfaces and is produced in accordance with ISO 11126-3.

It is used as blast cleaning abrasive for all application fields in conventional corrosion protection on almost all surfaces. Suitable for SA-3, SA-2½, SA-2 and SA-1.

Very suitable for use as roofing granules, as it is weather resistant and has uniform colour and grain size.

Vasilgrit

Vasilgrit® is an aluminium silicate blast cleaning abrasive made of coal slag from coal fired power stations. Vasilgrit® is designed for blast cleaning of steel and stone/concrete surfaces, removal of mill scale, rust, old paint, dirt etc. Suitable for SA-3, SA-2½ and SA-2, as well as SA-1, also called sweep blasting.

Vasilgrit® is a by-product of coal fired power plants and is an inert, natural abrasive that contains less than 0.1% free crystalline silica. Vasilgrit® is very accurately processed and sized and fully complies with ISO standards 11126-4 and 11127.

AbraCut

AbraCut® is made of garnet, a naturally occurring mineral that is non- toxic, chemically inert and contains no free quartz. It is perfect for blast cleaning stone, concrete and steel, and for the removal of mill scale, rust, old paint and dirt.

Abracut® is suitable for surface preparation standards SA-3, SA-2½, SA-2 and SA-1 (sweep blasting). It is also used in blast rooms, cabinets and for wet / damp blasting systems. Abracut® is suitable for blasting thermally-treated/galvanised materials and for façade cleaning. It can also be used to clean concrete. Furthermore it is widely used for high pressure waterjet cutting as well as for water filtration.

Minersiv

Minersiv® is a garnet abrasive specially developed as a high-pressure waterjet cutting media. Minersiv® garnet is re-dried and re-screened at our Hamburg facility to obtain optimal grain size distribution and moisture content and to guard against possible contaminants.

Minersiv® garnet is available in #80 and #120 mesh.