Aluminium oxide & silicon carbide grains
FEPA-Standard 42-1:2006: Grains of fused aluminium oxide, silicon carbide and other abrasive materials for bonded abrasives and for general industrial applications Macrogrits F 4 to F 220
FEPA-Standard 42-2:2006: Grains of fused aluminium oxide, silicon carbide and other abrasive materials for bonded abrasives and for general industrial applications Microgrits F 230 to F 2000
The mean diameters of macrogrits shown in the table are estimated and for information only, the FEPA-Standard defines them as a range and not a single value. The particle size distribution of macrogrits is determined by sieving, while the microgrits have been measured by sedimentation (photosedimentometer).
More information can be found in the FEPA-Standards 42-1:2006 ; 42-2:2006 and in ISO 8486. Micro-F-mastergrits can be obtained from Staatliche Materialprüfungsanstalt Darmstadt
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