Sharpening Comparison


Crystolon
 (Silicon Carbide)

India
 (Aluminium Oxide)
Arkansas (Washita, Soft, Hard)
White, Black, Translucent
Diamond Stones
Waterstones
Coated  Abrasives
(Waterproof Sandpaper)
Coated  Abrasives
(Waterproof Sandpaper)
Diamond Compound




JIS
(Japan)
CAMI
(USA)
FEPA
(Europe)
Micron Size






P100
141
Coarse Crystolon





P120
127





120

116

Coarse India




P150
97





150

93
Medium Crystolon




180
P180
78






P220
65



Extra Coarse Diamond (220)
Norton 220
220

60






P240
58

Medium India



240

53.5






P280
52.5







50






P320
46
Fine Crystolon






45



Coarse Diamond (325)

280

43






P360
40.5




360
320

36

Fine India
Washita



P400
35





360

29






P600
25.8





400

23

Extra Fine India
Soft Arkansas
Fine Diamond (600)
600

P800
22







20




800
600
P1200
16




Norton 1000
700

14





800
P1500
12.6


Hard White Arkansas
Extra Fine Diamond (1200)
1200


11






P2000
10.3




1500
1000

9.2







9





1500
P2500
8.4




Norton 2000


7.5


Hard Black Arkansas
Hard Translucent Arkansas

Norton 4000
2000

6







5




Norton 8000


3







1.2







1




15000


0.5

Crystolon
(Silicon Carbide)

India
 (Aluminium Oxide)
Arkansas (Washita, Soft, Hard)
White, Black, Translucent
Diamond Stones
Waterstones
Coated  Abrasives
(Waterproof Sandpaper)
Coated  Abrasives
(Waterproof Sandpaper)
Diamond Compound




JIS
(Japan)
CAMI
(USA)
FEPA
(Europe)
Micron Size

Relative Sharpening Comparisons for Norton Abrasive Products