产品用途：
用作生产超硬材料和硬质合金的添加剂并用来生产电焊条、耐火材料等。
Application:
It is used to make super-hard materials and cemented carbides as alloy additives and also for producing welding electrodes, refractories, etc.
产品性能参数/ Product Property Parameters：
|
产品牌号Grade
|
FNb-1
|
FNb-2
|
FNb-3
|
FXNb-1
|
FXNb-2
|
FXNb-3
|
|
主含量
（质量分数），
（%，不小于）
Main Content (mass fraction), %, min
|
Nb+Ta
|
99.8
|
99.5
|
98
|
99.8
|
99.5
|
99
|
|
杂质含量
（质量分数），
（%，不大于）
Impurity Contents (mass fraction), %, max
|
W
|
0.005
|
0.01
|
—
|
0.005
|
0.01
|
0.01
|
|
Mo
|
0.003
|
0.005
|
—
|
0.005
|
0.01
|
0.01
|
|
Cu
|
0.003
|
0.005
|
—
|
0.003
|
0.006
|
0.006
|
|
Fe
|
0.01
|
0.05
|
—
|
0.01
|
0.02
|
0.03
|
|
Ni
|
0.005
|
0.005
|
—
|
0.005
|
0.01
|
0.01
|
|
Cr
|
0.005
|
0.01
|
—
|
0.005
|
0.01
|
0.01
|
|
Ti
|
0.003
|
0.005
|
—
|
0.005
|
0.01
|
0.01
|
|
Ta
|
0.10
|
0.20
|
—
|
0.10
|
0.20
|
0.30
|
|
Mn
|
0.003
|
0.005
|
—
|
0.005
|
0.01
|
0.01
|
|
Si
|
0.005
|
0.010
|
—
|
0.005
|
0.01
|
0.01
|
|
Al
|
—
|
—
|
—
|
0.003
|
0.006
|
0.006
|
|
气体杂质含量
（质量分数），
（%，不大于）
Gas Impurity Contents (mass fraction), %, max
|
C
|
0.05
|
0.05
|
0.08
|
0.02
|
0.04
|
0.04
|
|
O
|
0.20
|
0.20
|
0.50
|
0.30
|
0.35
|
0.50
|
|
N
|
0.04
|
0.05
|
—
|
0.02
|
0.04
|
0.05
|
|
H
|
0.005
|
0.005
|
0.01
|
0.005
|
0.01
|
0.01
|
|
筛分目数
Sieve mesh
|
-100目
-100mesh
|
-80目
-80 mesh
|
-325目
-325mesh
|
|
筛上物小于5%,
Re-inspected plus sieve powder shall be less than 5%.
|
|
注：用户如有特殊要求，双方具体商定。
Note: Special requirements will be agreed upon by the supplier and buyer.
|
