Active Member
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[China]
Address: Building 3, International Enterprises Center, Guanggu Avenue 52#, Wuchang, Wuhan, China
Contact name:Pauline
Hubei Fotma Machinery Co., Ltd. |
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99.95% Pure Black Tungsten Wire W Wire For Lightening / Heating / Coating
Tungsten is used extensively for filaments for electric lamps, electron and television tubes, and for metal evaporation work; for electrical contact points for automobile distributors; X-ray targets; windings and heating elements for electrical furnaces; and for numerous spacecraft and high-temperature applications. High-speed tool steels, Hastelloy(R), Stellite(R), and many other alloys contain tungsten.
Brief Introduction of Tungsten Wire:
1. Purity: 99.95%-99.98%;
2. Grade: W1, W2
3. Density:19.2g/cm3
4. Appearance: black surface
5. Supply state: annealing
6. The tungsten wire features excellent formability, long life and super lighting efficiency. Mainly used for making various electron tube, H series auto lamp,halogen lamp and other special lamp.
Applications of Black Tungsten Wires:
• Tungsten heater element
• Other heater components in semiconductor
• High temperature lamp and filament, stock - resistance filament,
double helix filament etc
• Electric incandescent lamp filament, fluorescent light filament,
etc
Packing of Tungsten Wire:
• Tungsten wire in spool: plastic case or plastic vacuum packing.
• Tungsten wire in coil: woven bag or plastic vacuum packing.
Note: The length or weight of single tungsten wire can be supplied
by your special request.
Different Grades for Tungsten Wries:
Type | Purity of tungsten | Type | Application |
WAl1 | ≥99.92 | T | Double – screwy filament. Filament for high colour temperature lamp and shockproof lamp etc. |
L | Filament for incandescent lamp. Cathode for emitting tube. High temperature electrodes. Twisted tungsten wire etc. | ||
W | Folded – heater for electronic tube, etc. | ||
WAl2 | ≥99.92 | T | Filament for fluorescent lamp etc. |
L | Heater for electronic tube. Filament for incandescent lamp. Twisted tungsten wire etc. | ||
W | Folded – heater for electronic tube, etc. | ||
WAl3 | ≥99.92 | L | Filament for normal lamp. Spring wire for semiconductors, etc. |
W1 | ≥99.95 |
| Tungsten wire in twisted and heating parts etc. |
W2 | ≥99.92 |
| Grid side rod for electron tube. Tungsten wire in twisted etc. |
Pure Tungsten Composition:
Grade | W content, min, % | Total impurity elements, max, % | Each element, max, % |
W1 | 99.95 | 0.05 | 0.01 |
W2 | 99.92 | 0.08 | 0.01 |
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