| Customization: | Available |
|---|---|
| Application: | Electronics, Industrial |
| Standard: | GB |
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Tungsten powder is a bright black powder, the molecular formula is W, the relative molecular quality is 183.84. Grain size and chemical purity is the main reference index for judging the quality.The chemical purity of tungsten powder which produced by Ultra Minor Metal is in the range of 99.99~99.999% or above.Pure tungsten powder is mainly used in the semiconductor and other fields, tungsten powder preparation of high pure tungsten target and high pure tungsten target. And other sophisticated technology and materials in the field of, especially ultrapure tungsten and silicides for ultra large scale integrated circuit as a resistance layer, a diffusion barrier layer and the metal oxide semiconductor transistor as the gate material and connection materials etc..
Chemical specification
|
Elements
|
Content ,Less than(%)
|
Elements
|
Content ,Less than(%)
|
|
W
|
≥99.95
|
Mo
|
<0.005
|
|
Fe
|
<0.005
|
Pb
|
<0.0001
|
|
Ni
|
<0.003
|
Bi
|
<0.0001
|
|
Cu
|
<0.001
|
Sn
|
<0.0003
|
|
Al
|
<0.001
|
Sb
|
<0.001
|
|
Si
|
<0.002
|
As
|
<0.001
|
|
Ca
|
<0.002
|
P
|
<0.001
|
|
K+Na
|
<0.003
|
S
|
<0.001
|
|
Mg
|
<0.001
|
C
|
<0.005
|
|
Mn
|
<0.001
|
O
|
0.03~0.2
|
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