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Carborundum function parameter　Black carborundum　Green carborundum　A degree constitute　Tiny powder Japan, Western Europe standard
一.The solid knot of the Japanese industry standard JIS R6001-1987 whets to have to use to whet a degree of anticipate the tiny powder to distribute( the electric resistance method) the unit：um
A degree
A path
（dso）
Backlog high 3%
Grain of order（ds3）
Backlog high 50%
A path of order（dso）
Backlog high94%
A path of order（ds4）
＃240
127
103
57±3.0
40
＃280
112
87
48.0±3.0
33
＃320
98
74
40.0±2.5
27
＃360
86
66
35.0±2.0
23
＃400
75
58
30.0±2.0
20
＃500
63
50
25.0±2.0
16
＃600
53
41
20.0±1.5
13
＃700
45
37
17.0±1.3
11
＃800
38
31
14.0±1.0
9
＃1000
32
27
11.5±1.0
7
＃1200
27
23
9.50±0.8
5.5
＃1500
23
20
8.0±0.6
4.5
＃2000
19
17
6.7±0.6
4
＃2500
16
14
5.5±0.5
3
＃3000
13
11
4.0±0.5
2
＃4000
11
8
3.0±0.4
1.3
＃6000
8
5
2.0±0.4
0.8
＃8000
5
3.5
1.2±0.3
0.6
Adopt the United States sinks to decline the instrument( sink to decline to take care of an instrument) examination value
二.Western Europe together the solid knot of standard FEPA- GB-1984 of body whets to have to use to whet to anticipate a degree of tiny powder to constitute the unit：um
A degree
ds3Biggest valueum
ds50In a degree valueum
ds94Minimum value um
F230
82
53.0±3.0
34
F240
70
44.5±2.0
28
F280
59
36.5±1.5
22
F320
49
29.2±1.5
16.5
F360
40
22.8±1.5
12
F400
32
17.3±1.0
8
F500
25
12.8±1.0
5
F600
19
9.3±1.0
3
F800
14
6.5±1.0
2
F1000
10
4.5±0.8
1
F1200
7
3.0±0.5
1（for80%）
Adopt the light electricity sinks to decline the instrument( sink to decline the light deeply instrument) measurement value
C制粒
GC制粒
C微粉
GC微粉
GC硅块
C砂
GC砂
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