-
E-mail
info@gemchina.com
- Phone
- Address
Shenzhen Greenmei High tech Co., Ltd
info@gemchina.com
Molecular formula: (NH)4)10H2W12O42
Characteristics and uses: White crystal, slightly soluble in water. Mainly used for manufacturing tungsten trioxide or blue tungsten oxide to produce metal tungsten powder; The downstream products of tungsten powder include tungsten material series, such as tungsten bars, tungsten wires and other electric vacuum materials; There are alloy series, such as tungsten carbide, hard alloy, alloy blades, alloy drill bits, alloy molds, etc; Other wear-resistant, pressure resistant, and high-temperature resistant mechanical equipment components.
Main Element Indicators | |||
Brand Type |
APT-0 |
APT-1 |
|
WO3 %≥ |
88.5 |
88.5 |
|
|
impurity content (Based on WO3) Impurity(Based on WO3) Unit:% |
Al ≤ |
0.0005 |
0.001 |
As ≤ |
0.001 |
0.001 |
|
Bi ≤ |
0.0001 |
0.0001 |
|
Ca ≤ |
0.001 |
0.001 |
|
Cd ≤ |
0.0003 |
0.001 |
|
Co ≤ |
0.001 |
0.001 |
|
Cr ≤ |
0.001 |
0.001 |
|
Cu ≤ |
0.0003 |
0.0005 |
|
Fe ≤ |
0.001 |
0.001 |
|
K ≤ |
0.001 |
0.0015 |
|
Mg ≤ |
0.0005 |
0.0007 |
|
Mn ≤ |
0.0005 |
0.001 |
|
Mo ≤ |
0.002 |
0.003 |
|
Na ≤ |
0.001 |
0.0015 |
|
Ni ≤ |
0.0005 |
0.0005 |
|
P ≤ |
0.0007 |
0.001 |
|
Pb ≤ |
0.0001 |
0.0001 |
|
S ≤ |
0.0008 |
0.001 |
|
Sb ≤ |
0.0005 |
0.001 |
|
Si ≤ |
0.001 |
0.001 |
|
Sn ≤ |
0.0002 |
0.0003 |
|
Ti ≤ |
0.001 |
0.001 |
|
V ≤ |
0.001 |
0.001 |
|
|
level Grade |
Coarse grade Coarse size |
intermediate Medium size |
Fine level Fine size |
ultrafine Ultra-fine size |
Average particle size FSSS/μ m |
>35 |
>20-35 |
10-20 |
<10 |