| Grade |
W (%,min) |
Impurities (%,max ) |
| Al |
As |
Bi |
Ca |
Mg |
Cd |
Co |
Cr |
Cu |
Fe |
| FW-1 |
99.9 |
0.001 |
0.0012 |
0.0001 |
0.002 |
0.001 |
0.0003 |
0.001 |
0.0015 |
0.0008 |
0.004 |
| FW-2 |
99.8 |
0.0015 |
0.0015 |
0.0003 |
0.003 |
0.0015 |
0.0003 |
0.001 |
0.0015 |
0.001 |
0.008 |
| Impurities (%,max ) |
| K |
Na |
Mn |
Mo |
Ni |
P |
Pb |
Sb |
Si |
Sn |
Ti |
V |
C |
| 0.002 |
0.002 |
0.0007 |
0.004 |
0.002 |
0.001 |
0.0001 |
0.0003 |
0.002 |
0.0001 |
0.0008 |
0.0008 |
0.005 |
| 0.003 |
0.003 |
0.001 |
0.01 |
0.004 |
0.002 |
0.0003 |
0.0005 |
0.004 |
0.0003 |
0.001 |
0.001 |
0.01 |
| Divided into 14 grades according to Fsss.size |
| Grades |
Fsss.(μ) |
O2 ( %,max ) |
| W-0 |
0.40~0.69 |
0.3 |
| W-1 |
0.70~0.99 |
0.3 |
| W-2 |
1.00~1.49 |
0.25 |
| W-3 |
1.50~1.99 |
0.2 |
| W-4 |
2.00~2.49 |
0.15 |
| W-5 |
2.50~2.99 |
0.15 |
| W-6 |
3.00~3.49 |
0.1 |
| W-7 |
3.50~3.99 |
0.1 |
| W-8 |
4.00~4.49 |
0.07 |
| W-9 |
4.50~4.99 |
0.07 |
| W-10 |
5.00~6.99 |
0.05 |
| W-11 |
7.00~8.99 |
0.05 |
| W-12 |
8.99~14.99 |
0.05 |
| W-13 |
15.00~25.00 |
0.05 |
Packing:In iron drums lined with double plastic bags of 50 or 100 kgs net each.
Note:Any particular requirements to the products can be discussed.
