Ultrafine Tungsten Powder
Grade |
BET or F.s.s.s |
Oxygen% max |
GW02 |
>5.0㎡/g |
0.80 |
GW04 |
4.0-5.0㎡/g |
0.60% |
GW05 |
0.5-0.6μm |
0.55% |
GW06 |
0.6-0.7μm |
0.40 |
GW07 |
0.7-0.8μm |
0.35 |
GW08 |
0.8-0.9μm |
0.25 |
Ultrafine tungsten powder refers to tungsten powder whose grain size is under 2um.
Trace Elements for Powder Below 9.0um
Element |
Max |
Typical |
Element |
Max |
Typical |
Element |
Max |
Typical |
Al |
0.0010 |
0.0005 |
Fe |
0.0050 |
0.0010 |
Pb |
0.0003 |
0.0001 |
As |
0.0010 |
0.0005 |
K |
0.0015 |
0.0010 |
S |
0.0010 |
0.0005 |
Bi |
0.0003 |
0.0001 |
Mg |
0.0010 |
0.0005 |
Sb |
0.0005 |
0.0003 |
C |
0.0030 |
0.0010 |
Mg |
0.0010 |
0.0005 |
Si |
0.0015 |
0.0010 |
Ca |
0.0015 |
0.0006 |
Mn |
0.0010 |
0.0005 |
Sn |
0.0003 |
0.0001 |
Cd |
0.0005 |
0.0001 |
Mo |
0.0030 |
0.0016 |
Ti |
0.0010 |
0.0005 |
Co |
0.0010 |
0.0005 |
Na |
0.0015 |
0.0007 |
V |
0.0010 |
0.0005 |
Cr |
0.0020 |
0.0010 |
Ni |
0.0020 |
0.0010 |
|||
Cu |
0.0003 |
0.0001 |
P |
0.0010 |
0.0005 |
