Glass granules

Glass granules are an angular, iron-free, reusable blasting medium which is suitable for use with stainless steel and aluminium. The angular shape of glass granules has a more abrasive effect on the surface being blasted than glass beads. However, glass granules are less aggressive than alumina because they are not as hard.

Available grain sizes

(Average grain size)


Physical properties

Hardness: 6-7 mohs
Grain shape: angular
Melting point: approx. 730 °C
Specific gravity: approx. 2,5 g/cm³
Bulk density: approx. 1,2 – 1,8 g/cm³ (depending on grain size)

Typical chemical analysis

SiO2: 68,00-75,00%
Na2O: 12,00-18,00%
CaO: 7,00 – 12,00%
MgO: max. 5,00%
Al2O3: max. 2,50%
K2O: max. 1,50%
Fe2O3: max. 0,50%

Blasting systems

– Pressure blast systems
– Injection blast cabinets


– Removing rust and scale from metallic surfaces
– Removing mould residues from castings
– Removing tempering colour

Surface finishing:
– Creating a matt finish on metallic surfaces
– Producing specific visual effects


25 kg sacks on pallets of up to 1 tonne

Minimum order quantity

50 kg (2 sacks)

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