Tungsten Bar/rod
Tungsten bar
1:Type&Application
Type |
Application |
WAL1,WAL2 |
Applied for makin filament,cathodes and components for electron tubes,electrode for gas discharge tube |
WAL3 |
Used for grid side rod,support,lead and electrode for gas discharge tube |
W1,W2 |
Used for grid side rod,support,lead and electrode |
Note:quality is strictly as per GB4187-84 national standard
2:Chemical Composition:
Type |
W |
Fe |
Mo |
Other element |
WAL1,WAL2,WAL3 |
≥99.95% |
≤0.001% |
≤0.002% |
≤0.001% |
W1,W2 |
≥99.95% |
≤0.001% |
≤0.002% |
≤0.001% |
3:Dimension and tolerance
Varity |
Diameter Range |
MIN |
MAX |
Black rod wroughted |
2.8mm-11mm |
±0.05mm |
±0.1mm |
Straightened rod |
0.8mm-3.0mm |
±0.01mm |
±0.01mm |
Ground rod |
0.8mm-10mm |
±0.01mm |
±0.05mm |
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