White Fused Alumina £¨Abrasive grade£©

 

WA for Abrasives Composition of the Grain Size Standard

 
£¨ISO8486£º1996¡¢FEPA42¡¢GB1984¡¢JIS R6001-1998¡¢ANSI B74.12-1992¡¢GB/T2481.1-1998£©£º
Grain size
Best Coarse
Coarse
Normal part
Mixed part
Fine part
100%pass these mesh NO.
Not pass mesh NO
Weight%short
Not pass
Weight%More than
Not pass mesh NO
Weight%More than
More than 3% pass these mash NO.
F4
5/16
31/2
20
4
40
4 5
70
6
F5
0.265
4
20
5
40
5 6
70
7
F6
31/2
5
20
6
40
6 7
70
8
F7
4
6
20
7
40
7 8
70
10
F8
5
7
20
8
45
8 10
70
12
F10
6
8
20
10
45
10 12
70
14
F12
7
10
20
12
45
12 14
70
16
F14
8
12
20
14
45
14 16
70
18
F16
10
14
20
16
45
16 18
70
20
F20
12
16
20
18
45
18 20
70
25
F22
14
18
20
20
45
20 25
70
30
F24
16
20
25
25
45
25 30
65
35
F30
18
25
25
30
45
30 35
65
40
F36
20
30
25
35
45
35 40
65
45
F40
25
35
30
40
40
40 45
65
50
F46
30
40
30
45
40
45 50
65
60
F54
35
45
30
50
40
50 60
65
70
F60
40
50
30
60
40
60 70
65
80
F70
45
60
25
70
40
70 80
65
100
F80
50
70
25
80
40
80 100
65
120
F90
60
80
20
100
40
100 120
65
140
F100
70
100
20
120
40
120 140
65
200
F120
80
120
20
140
40
140 170
65
230
F150
100
140
15
200
40
200 230
65
325
F180
120
170
15
200 230
40
200 230 270
65
F220
140
200
15
230 270
40
230 270 325
65
F240
170
200
5
230 270
8
230 270 325
38

 

£¨1£©The mark for same grain size is mentioned defferently,such as:ANSIB and are:#60;ISO.FEPA.GB are :F60

£¨2£©JIS R6001and ANSI B74.12 have no the mark of F22 and F40

£¨3£©Only ANSI B74.12 have 240#,others have no 240#

The properties of White Fused Alumina for Abrasive

£¨GB/T 2479-1996£©

Code name
Range of the Grain Size
Chemical composition %
Al2O3 min
Na2O max
WA
FA-F80
98.50
0.50
F90-F150
98.50
0.60
F180-F220
98.20
0.70
W63-W14(F230-F600)
98.00
0.80
W10-W5(P12-P80)
97.50
0.90
WA-B and WA-P
F12-F80(P12-P80)
98.50
0.60
F90-F150(P100-P150)
98.20
0.70
F180-F220(P180-P220)
98.00
0.80
P240-P800
98.00
0.80
P1000-P1200
97.50
0.90

The sieve analysis of WA Micropowder for Coated Bonded abrasives(Sedimentation tube method)

£¨ISO 9496£º1996.FEPA42GB1984.GB/T2481.2-1998£©

Grain size Mark
D3 Maximum (um)
D50 Middle (um)
D94 Mininum (um)
F230
80
53.0 ¡À 3.0
34
F240
70
44.5 ¡À 2.0
28
F280
59
36.5 ¡À 1.5
22
F320
49
29.2 ¡À 1.5
16.5
F360
40
22.8 ¡À 1.5
12
F400
32
17.3 ¡À 1.0
8
500
25
12.8 ¡À 1.0
5
F600
19
9.3 ¡À 1.0
3
F800
14
6.5 ¡À 1.0
2
F1000
10
4.5 ¡À 0.8
1
F1200
7
3.0 ¡À 0.5
1(80%)