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Aluminium Oxide & Silicon Carbide Grains

Updated:2008-01-30 09:39:31
 

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.

 

MACROGRITS

 

MICROGRITS

Grit
designation

Mean
Diameter
in ?μm

 

Grit
designation

Mean grain

size ds50-value in ??m

F 4

4890

 

F 230

53.0 ?± 3

F 5

4125

 

F 240

44.5 ?± 2

F 6

3460

 

F 280

36.5 ?± 1.5

F 7

2900

 

F 320

29.2 ?± 1.5

F 8

2460

 

F 360

22.8 ?± 1.5

F 10

2085

 

F 400

17.3 ?± 1

F 12

1765

 

F 500

12.8 ?± 1

F 14

1470

 

F 600

9.3 ?± 1

F 16

1230

 

F 800

6.5 ?± 1

F 20

1040

 

F 1000

4.5 ?± 0.8

F 22

885

 

F 1200

3.0 ?± 0.5

F 24

745

 

F 1500

2.0 ?± 0.4

F 30

625

 

F 2000

1.2 ?± 0.3

F 36

525

 

 

 

F 40

438

 

 

 

F 46

370

 

 

 

F 54

310

 

 

 

F 60

260

 

 

 

F 70

218

 

 

 

F 80

185

 

 

 

F 90

154

 

 

 

F 100

129

 

 

 

F 120

109

 

 

 

F 150

82

 

 

 

F 180

69

 

 

 

F 220

58

 

 

 

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.

 

 

source: http://www.fepa-abrasives.org/

 

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