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Comparative Chart of Diamond Grain size
Range China JB2808-79 International ISO 6106-79 West Europe FEPA USA ANSI B74.16-71 Japan JIS 6002-63 West Germany DIN 848-65
|
Grit No.
|
Size range
in µ
|
Grit No.I
|
Grit No.II
|
Grit No.
|
Size range in µ
|
Grit No.
|
Size range in µ
|
Grit No.
|
Size range in µ
|
Grit No.
|
Size range in µ
|
|
36#
|
500/400
|
501
|
|
D501
|
500/425
|
35/40(GE)
|
500/425
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|
|
D450
|
400/500
|
|
46#
|
400/315
|
427
|
40/50
|
D427
|
455/302
|
40/50
|
455/302
|
46
|
420/350
|
D350
|
315/400
|
|
60#
|
315/250
|
301
|
50/60
|
D301
|
322/255
|
50/60
|
322/255
|
60#
|
290/250
|
D280
|
250/315
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|
70#
|
250/200
|
251
|
|
D251
|
271/213
|
60/70(GE)
|
271/213
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70#
|
250/210
|
D220
|
200/250
|
|
80#
|
200/160
|
213
|
|
D213
|
227/181
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70/80(GE)
|
227/181
|
80#
|
210/177
|
D180
|
160/200
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|
100#
|
160/125
|
151
|
100/120
|
D151
|
165/127
|
100/120
|
165/127
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100#
|
149/125
|
D140
|
125/160
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|
120#
|
125/100
|
126
|
120/140
|
D126
|
139/107
|
120/140/170/200
|
139/107
|
120#
|
125/105
|
D110
|
100/125
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|
150#
|
100/80
|
91
|
170/200D
|
D91
|
97/75
|
200/230
|
97/75
|
150#
|
105/74
|
D90
|
80/100
|
|
180#
|
80/63
|
76
|
200/230
|
D76
|
85/65
|
270/325
|
85/65
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180#
|
88/63
|
D65
|
63/80
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|
240#
|
63/50
|
54
|
270/325
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D54
|
65/49
|
325/400
|
65/49
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280#
|
53/44
|
D55
|
50/63
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|
280#
|
50/40
|
46
|
325/400
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D46
|
57/41
|
45
|
57/41
|
320#
|
44/37
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D45
|
40/50
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W40
|
40-20
|
|
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M63
|
42/84
|
30
|
|
400#
|
37/34
|
D35
|
32/40
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|
W28
|
28-14
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|
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M40
|
27/53
|
15
|
|
500#
|
34/28
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D25
|
25/32
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W20
|
20-10
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|
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M25
|
16/34
|
9
|
|
600#
|
28/24
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D20
|
25/40
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|
W14
|
14-7
|
|
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M16
|
10/22
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|
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700#
|
24/20
|
D20B
|
30/40
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W10
|
10-5
|
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M10
|
6/14
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800#
|
20/16
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D20A
|
25/30
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W7
|
7-3.5
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|
|
M6.3
|
4/9
|
|
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1000#
|
16/13
|
D15
|
10/25
|
|
W5
|
5-2.5
|
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M4.0
|
2.5/5.5
|
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1200#
|
13/10
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D15C
|
20/25
|
|
W3.5
|
3.5-1.5
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|
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M2.5
|
1.5/3.5
|
|
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1500#
|
10/8
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D15B
|
15/20
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|
W2.5
|
2.5-1
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|
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M1.6
|
1/2.5
|
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2000#
|
8/6
|
D15A
|
10/15
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|
W1.5
|
1.5-0.5
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|
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M1.0
|
0.5/1.5
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|
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2500#
|
6/5
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D7
|
5/10
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W1
|
1-0
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|
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3000#
|
5/4
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D3
|
2/5
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|
W0.5
|
0.5-0
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4000#2/1
|
4/3
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D1
|
1/2
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5000#
|
3/2
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D0.7
|
0.5/1
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8000#
|
2/1
|
D0.25
|
<0.5
|
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15000#
|
1/0
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