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comparison chart

 

 

CBN abrasive mesh size and comparison chart

QUEENBEE company
International Standard
FEPA
USA
JAPAN
Theoretical Basic Size
RUSSIA
GB/T6406-1995
ISO
ANSI B74.16-1971
JIS4130-1998
9206-80
Grain No.
Grain Size
Grain No. Ⅰ
Grain No. Ⅱ
Grain Size
Grain No.
Grain Size
Grain No.
Grain Size
Grain No.
Grain Size
Inch
Millimeter
Grain No.
Grain Size
40/50
425/300
427
40/50
425/300
B/427
355/300
40/50
425/300
40/50
425/300
0.015
0.378
500/400
500/400
50/60
300/250
301
50/60
300/250
B/301
300/250
50/60
300/250
50/60
300/250
0.011
0.288
400/315
400/315
60/80
250/180
252
60/80
250/180
B/252
250/180
60/80
250/180
60/80
250/180
0.009
0.226
250/200
250/200
80/100
180/150
181
80/100
180/150
B/181
180/150
80/100
180/150
80/100
180/150
0.0069
0.174
200/160
200/160
100/120
150/125
151
100/120
150/125
B/151
150/125
100/120
150/125
100/120
150/125
0.0058
0.148
160/125
160/125
120/140
125/106
126
120/140
125/106
B/126
125/106
120/140
125/106
120/140
125/106
0.0048
0.123
125/100
125/100
140/170
106/90
107
140/170
106/90
B/107
106/90
140/170
106/90
140/170
106/90
0.0041
0.103
100/80
100/80
170/200
90/75
91
170/200
90/75
B/91
90/75
170/200
90/75
170/200
90/75
0.0034
0.866
80/63
80/63
200/230
75/63
76
200/230
75/63
B/76
75/63
200/230
75/63
200/230
75/63
0.0030
0.075
63/50
63/50
230/270
63/53
64
230/270
63/53
B/64
63/53
230/270
63/53
230/270
63/53
0.0026
0.066
50/40
50/40
270/325
53/45
54
270/325
53/45
B/54
53/45
270/325
53/45
270/325
53/45
0.0022
0.057
 
 
325/400
45/38
46
325/400
45/38
B/46
45/38
325/400
45/38
325/400
45/38
0.0019
0.048