Tungsten Filament Wire for LED & Vacuum Tube Manufacturing
Tungsten Filament Wire for LED & Vacuum Tube Manufacturing
Key Features:
✔ Extreme Heat Resistance – Withstands up to 3422°C (highest of all metals)
✔ Precision Sizing – Diameters from 0.01mm (ultra-fine) to 1.0mm
✔ Superior Tensile Strength – Ideal for high-stress applications
✔ Multiple Surface Finishes – Polished, annealed, or coated options
✔ Certified Quality – ASTM F288 compliant, RoHS/REACH certified
Grade:
|
GB grade |
W |
Mo |
C |
|
W1 |
99.95% |
0.01 |
0.005 |
|
W2 |
99.92% |
0.01 |
0.008 |
|
WAL1,WAL2 |
99.95% |
0.01 |
0.005 |
|
REMARKS: IMPURITIES ACCORDING TO GB/T 3875-2006 |
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Specification:
|
D(Tolerance) |
W(Tolerance) |
surface |
|
5~1800 |
----- |
Raw, Turned, polished |
|
Diameter (μm) |
Weight of 200mm |
Weight tolerance of 200mm(％) |
Tolerance of Diameter（％） |
||||
|
Grade 0 |
Grade Ⅰ |
Grade Ⅱ |
Grade 0 |
Grade Ⅰ |
Grade Ⅱ |
||
|
5≤d≤12 |
0.075~0.44 |
－ |
±4 |
±5 |
－ |
－ |
－ |
|
12 |
>0.44~0.98 |
－ |
±3 |
±4 |
－ |
－ |
－ |
|
18 |
>0.98~4.85 |
±2 |
±2.5 |
±3 |
－ |
－ |
－ |
|
40 |
>4.85~19.39 |
±1.5 |
±2.0 |
±2.5 |
－ |
－ |
－ |
|
80 |
>19.39~272.71 |
±1.0 |
±1.5 |
±2.0 |
－ |
－ |
－ |
|
300 |
>272.71~371.79 |
－ |
±1.0 |
±1.5 |
－ |
－ |
－ |
|
350 |
－ |
－ |
±1.5 |
±2.0 |
±2.5 |
||
|
500 |
－ |
－ |
±1.0 |
±1.5 |
±2.0 |
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Primary Applications:
1. EDM (Electrical Discharge Machining) – Precision electrodes for mold/die manufacturing
2. Heating Elements – High-temp furnace coils, thermocouples
3. Lighting & Electronics – Filaments, semiconductor lead frames
4. Medical Devices – Surgical tools, radiation shielding components
5. Aerospace – Sensor wiring, propulsion system parts
