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◆ Grade: 1.FW-1: W≥99.95%
2.FW-2: W≥99.8%
◆ Impurity Content:
|
Grade |
FW-1 |
FW-2 |
|
Impurity Content
（%max） |
FE |
0.005 |
0.02 |
|
SI |
0.002 |
0.005 |
|
CA |
0.002 |
0.005 |
|
AL |
0.001 |
0.002 |
|
MN |
0.001 |
0.002 |
|
MG |
0.001 |
0.002 |
|
NI |
0.002 |
0.005 |
|
SB |
0.0005 |
0.001 |
|
CR |
0.001 |
0.004 |
|
AS |
0.001 |
0.002 |
|
PB |
0.0001 |
0.0005 |
|
BI |
0.0001 |
0.0005 |
|
SN |
0.001 |
0.002 |
|
CU |
0.0005 |
0.001 |
|
MO |
0.005 |
0.01 |
|
K |
0.002 |
0.003 |
|
NA |
0.001 |
0.003 |
|
S |
0.001 |
0.002 |
|
P |
0.001 |
0.002 |
|
C |
0.005 |
0.01 |
◆ Specifications：
|
Type |
Fsss(UM) |
Scott density (g/cm3) |
Oxygen content max（%） |
|
07 |
0.6-0.8 |
1.4-2.2 |
0.5 |
|
09 |
0.81-1.0 |
1.7-2.5 |
0.4 |
|
10 |
1.01-1.5 |
2.0-2.8 |
0.3 |
|
15 |
1.51-2.0 |
2.2-3.0 |
0.3 |
|
20 |
2.01-3.0 |
2.6-3.5 |
0.25 |
|
30 |
3.01-4.0 |
3.2-4.2 |
0.25 |
|
40 |
4.01-5.5 |
3.8-4.8 |
0.25 |
|
55 |
5.51-7.0 |
4.0-5.2 |
0.2 |
|
70 |
7.01-15 |
4.2-5.5 |
0.2 |
|
150 |
15.1-25 |
4.5-6.5 |
0.1 |
|
◆ Chemical Composition(%)：
W |
Fe |
Mo |
other impurities |
≥99.95 |
≤0.002 |
≤0.003 |
≤0.001 |
Note:K is not regarded as impurity.
◆ Diameter Range：
CLASS IFICATION |
minimal diameter |
maximal diameter |
TUNGSTEN ROD |
swaged |
3.0 |
16.0 |
straightened |
0.40 |
3.0 |
GROUND TUNGSTEN ROD |
1.0 |
14.0 |
◆ Diameter Tolerance：
Diameter |
Black tungsten rod |
Ground tungsten rod |
|
diameter tolerance |
roundness |
diameter tolerance |
roundness |
0.40<d≤0.80 |
±2 |
2 |
- |
- |
0.80<d≤3.0 |
±2 |
2 |
±0.03 |
0.03 |
3.0<d≤6.5 |
±2 |
2 |
±0.05 |
0.05 |
6.5<d≤14 |
±2 |
2 |
±0.08 |
0.08 |
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