| 超细、超微细钨粉规格
Ultra-fine and sub-micron powder
| |
品级 Grade |
平均粒度 BET or F.s.s.s |
氧含量(%)
Oxygen%
max |
| GW02 |
>5.0 m2/g |
0.80 |
| GW04 |
4.0-5.0 m2/g |
0.60 |
| GW05 |
0.5-0.6 um |
0.55 |
| GW06 |
0.6-0.7 um |
0.40 |
| GW07 |
0.7-0.8 um |
0.35 |
| GW08 |
0.8-0.9 um |
0.25 |
|
超细、常规钨粉杂质元素
Trace elements for powder below 9.0u
| |
|
元素
Element |
最大值 max
% |
典型值 Typical
% |
| Al |
0.0010 |
0.0005 |
| As |
0.0010 |
0.0005 |
| Bi |
0.0003 |
0.0001 |
| C |
0.0030 |
0.0010 |
| Ca |
0.0015 |
0.0006 |
| Cd |
0.0005 |
0.0001 |
| Co |
0.0010 |
0.0005 |
| Cr |
0.0020 |
0.0010 |
| Cu |
0.0003 |
0.0001 |
| Fe |
0.0050 |
0.0010 |
| K |
0.0015 |
0.0010 |
| Mg |
0.0010 |
0.0005 |
| Mn |
0.0010 |
0.0005 |
| Mo |
0.0030 |
0.0016 |
| Na |
0.0015 |
0.0007 |
| Ni |
0.0020 |
0.0010 |
| P |
0.0010 |
0.0005 |
| Pb |
0.0003 |
0.0001 |
| S |
0.0010 |
0.0005 |
| Sb |
0.0005 |
0.0003 |
| Si |
0.0015 |
0.0010 |
| Sn |
0.0003 |
0.0001 |
| Ti |
0.0010 |
0.0005 |
| V |
0.0010 |
0.0005 |
|