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)
80-150µm
100-200µm
200-300µm
300-600µm
300-800µm
400-1400µm
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
Applications
Blast-cleaning:
– 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
Packaging
25 kg sacks on pallets of up to 1 tonne
Minimum order quantity
50 kg (2 sacks)
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