synthetic diamond powder
Detail
Grit
|
Nominal size
|
The number of cells under microscope
|
Maximum
|
Minimum
|
Similar to the old standard size
|
Relative No.
|
M0/0.5
|
0-0.5
|
0-0.2
|
0.7
|
-
|
W0.5
|
30000
|
M0/1
|
0-1
|
0-0.4
|
1.4
|
-
|
W1
|
25000
|
M0.5/1
|
0.5-1
|
0.2-0.4
|
1.4
|
0
|
W1
|
20000
|
M0.5/1.5
|
0.5-1.5
|
0.2-0.6
|
1.9
|
0
|
W1.5
|
15000
|
M0/2
|
0-2
|
0-0.8
|
2.5
|
-
|
W2.5
|
8000
|
M1/2
|
1-2
|
0.4-0.8
|
2.5
|
0.5
|
W2.5
|
8000
|
M1.5/3
|
1.5-3
|
0.6-1.2
|
3.8
|
1
|
W3.5
|
5000
|
M2/4
|
2-4
|
0.8-1.6
|
5.0
|
1
|
W3.5+
|
4000
|
M2.5/5
|
2.5-5
|
1-2
|
6.3
|
1.5
|
W5
|
3000
|
M3/6
|
3-6
|
1.2-2.4
|
7.5
|
2
|
W5+
|
2500
|
M4/8
|
4-8
|
1.6-3.2
|
10.0
|
2.5
|
W7+
|
2000
|
M5/10
|
5-10
|
2-4
|
11.0
|
3
|
W10
|
1500
|
M6/12
|
6-12
|
2.4-4.8
|
13.2
|
3.5
|
W10+
|
1200
|
M8/12
|
8-12
|
3.2-4.8
|
13.2
|
4
|
W10+
|
1000
|
M8/16
|
8-16
|
3.2-6.4
|
17.6
|
4
|
W14+
|
900
|
M10/20
|
10-20
|
4-8
|
22
|
6
|
W20
|
800
|
M12/22
|
12-22
|
4.8-8.8
|
24.2
|
7
|
W20+
|
700
|
M20/30
|
20-30
|
8-12
|
33.0
|
10
|
W28+
|
600
|
M22/36
|
22-36
|
8.8-14.4
|
39.6
|
12
|
W40
|
500
|
M36/54
|
36-54
|
14.4-21.6
|
56.7
|
15
|
W50
|
400
|
CHINA
|
ISO6106-1979
|
FEPA-1997
|
U. S. A
|
|||||
GB/T6406-1996
|
ANSI B74.16-1971
|
|||||||
Grain(mesh)
|
Size(un)
|
Grain I
|
Grain II
|
Size
|
Grain
|
Size
|
Grain
|
Size
|
25/30
|
710/600
|
711
|
-
|
710/600
|
D711
|
710/600
|
20/30
|
850/600
|
30/35
|
600/500
|
601
|
-
|
600/500
|
D601
|
600/500
|
30/40
|
600/425
|
35/40
|
500/425
|
501
|
-
|
500/425
|
D501
|
500/425
|
||
40/45
|
425/355
|
426
|
-
|
425/355
|
D425
|
425/355
|
40/50
|
425/300
|
45/50
|
355/300
|
356
|
-
|
355/300
|
D356
|
355/300
|
||
50/60
|
300/250
|
301
|
50/60
|
300/250
|
D301
|
300/250
|
50/60
|
300/250
|
60/70
|
250/212
|
251
|
-
|
250/212
|
D251
|
250/212
|
60/80
|
250/180
|
70/80
|
212/180
|
213
|
-
|
212/180
|
D213
|
212/180
|
||
80/100
|
180/150
|
181
|
80/100
|
180/150
|
D181
|
180/150
|
80/100
|
180/150
|
100/120
|
150/125
|
151
|
100/120
|
150/125
|
D151
|
150/125
|
100/120
|
150/125
|
120/140
|
125/106
|
126
|
120/140
|
125/106
|
D126
|
125/106
|
120/140
|
125/106
|
140/170
|
106/90
|
107
|
140/170
|
106/90
|
D107
|
106/90
|
140/170
|
106/90
|
170/200
|
90/75
|
91
|
170/200
|
90/75
|
D91
|
90/75
|
170/200
|
90/75
|
200/230
|
75/63
|
76
|
200/230
|
75/63
|
D76
|
75/63
|
200/230
|
75/63
|
230/270
|
63/53
|
64
|
230/270
|
63/53
|
D64
|
63/53
|
230/270
|
63/53
|
270/325
|
53/45
|
54
|
270/325
|
53/45
|
D54
|
53/45
|
270/325
|
53/45
|
325/400
|
45/38
|
46
|
325/400
|
45/38
|
D46
|
45/38
|
325/400
|
45/38
|