COARSE: 3.5 - 5.0 (MIL)
Use Medium for general purpose repair and maintenance blasting including removal of paint, rust, mill scale, and other coatings from surfaces.
Minimum Nozzle Size: 1/4"
FINE: 3 - 4.5 (MIL)
Use Fine for new construction, light paint and rust removal, and for special maintenance applications requiring reduced profiles.
Minimum Nozzle Size: 3/16"
EXTRA FINE: 2.25 - 3.5 (MIL)
Use Ultra Fine for light blasting requiring a clean surface and minimum anchor profile including brush-off blast or high-pressure water blast systems.
Minimum Nozzle Size: 1/8"
SUPER FINE: 2.25 - 3.5 (MIL)
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The BLACK BEAUTY® Velocity abrasive “Minimum Nozzle Size” shows profile ranges achieved with different grades of BLACK BEAUTY® Velocity abrasives in a controlled environment using a blast cabinet designed by Harsco’s technical team. The controlled environment consisted of 90-100 psi at the nozzle, nozzle to surface distance of 18”, a ¼” orifice venturi nozzle, on new 1/8” grade A36 steel, with a blast angle of 75 degrees to 105 degrees.
Some variance can be noted in the nozzle size ranges even in a controlled environment. Harsco cannot guarantee identical profile results with BLACK BEAUTY® abrasives in the field where variability exists.
