| Tabels for grain size and chemcial composition |
Grain
Size No. |
Basic
Grain Size(um) |
Chemical
Composition |
C
Min(%) |
B
Min(%) |
Fe2O3
Max(%) |
Si
Max(%) |
B4C
Min(%) |
B1 |
B2 |
B1 |
B2 |
B1 |
B2 |
B1 |
B2 |
B1 |
B2 |
60# |
250 |
16 |
20 |
76 |
76 |
0.5 |
0.3 |
0.4 |
0.2 |
97 |
98 |
70# |
212 |
80# |
180 |
90# |
150 |
100# |
125 |
120# |
106 |
16 |
20 |
76 |
76 |
0.5 |
0.3 |
0.4 |
0.2 |
95 |
97 |
150# |
90-75 |
180# |
|
220# |
63-53 |
240# |
63-53 |
W63 |
63-50 |
16 |
20 |
76 |
76 |
0.6 |
0.4 |
0.6 |
0.3 |
94 |
96 |
W50 |
50-40 |
W40 |
40-28 |
W28 |
28-20 |
W20 |
20-14 |
W14 |
14-10 |
16 |
19 |
76 |
76 |
1 |
0.5 |
1.2 |
0.4 |
92 |
95 |
W10 |
10-7 |
W7 |
7-5 |
W5 |
5-3.5 |
16 |
19 |
76 |
76 |
1 |
0.5 |
1.2 |
0.4 |
90 |
95 |
W3.5 |
3.5-2.5 |
W2.5 |
2.5-0 |
60#-150# |
|
16 |
20 |
76 |
76 |
0.5 |
0.3 |
0.4 |
0.3 |
92 |
97 |
-10um |
10um |
|
20 |
|
76 |
1 |
0.5 |
|
0.4 |
|
96 |
-325mesh |
45um |
16 |
20 |
76 |
76 |
0.8 |
0.3 |
0.4 |
0.4 |
94 |
96 |
-100mesh |
150um |
-200mesh |
90um |
-3mm |
|
16 |
20 |
76 |
76 |
0.5 |
0.3 |
0.4 |
0.2 |
96 |
98 |
Items |
Content |
Total
Boron |
72-80% |
Total
Carbide |
17-22% |
Fe2O3 |
0.25-0.8 |
SiO2 |
0.2-1.2% |
B4C |
89-98% |
| Size:Granular,powder,and superfine grade |
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