Tungsten Filament Wire for LED & Vacuum Tube Manufacturing

Short Description:

High-purity tungsten wire (99.95%) with diameters 0.01-5.0mm for vacuum tubes, heating elements, and medical applications. Features extreme temperature resistance (3422°C melting point) and superior tensile strength. Available in straight/coiled forms with custom lengths....

Material Grade: Pure Tungsten (99.95%) / Tungsten Alloy (WNiFe)
Density: 19.3 g/cm³
Diameter: Customizable
Application: Used in light bulbs as various luminous bodies, weaving gloves
Melting point: 3422 °C

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Product Details

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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

Specification:

D(Tolerance)	W(Tolerance)	surface
5~1800	-----	Raw, Turned, polished

Diameter (μm)	Weight of 200mm	Weight tolerance of 200mm(％)			Tolerance of Diameter（％）
Diameter (μm)	Weight of 200mm	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

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

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