1. Grade: W1,W2
2. Purity :> =99.95%
2. Purity :> =99.95%
3. Characteristic:
Melting Point: 3410 Degrees Celsius
Boiling Point: 5927 Degrees Celsius
Density: 19.3g/cm3
High quality, workability
4. Certificate: ISO9002
5. Product Feature: High melting point, High-density, high temperature oxidation resistance, long service life, resistance to corrosion..
Tungsten wire is produced by stretching the Tungsten rod to the required diameter under swaging process. With the properties of hardness, low mechanical abrasion and melting resistance, Tungsten rod/bar is widely applied to electrical contacts which can be used for electrical appliances of vehicles equipped, voltage regulator in automobile engine and other electrical systems. In addition, Tungsten rod/bar can be widely used in electrode, the gate pole in electronic tube, side rod, lead-lines, frame, gas lamp electrodes, high-power incandescent filament, the filament in electronic tube and cathode in launch tube, cylinder barrel of advanced automobile etc.
6. Dimensions and tolerance(According to clients’ requirements):
|
Finished form
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Specified diameter
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Minimum length, mm
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Diameter tolerance
|
|
Wrought
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2.8≤d<5.0
|
600
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± 2%
|
|
5.0≤d<6.5
|
300
|
||
|
6.5≤d<11.0
|
200
|
||
|
Straightened
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0.8≤d<1.0
|
1000
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± 2%
|
|
1.0≤d<3.0
|
800
|
||
|
Ground
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0.8≤d<3.0
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800 – 1000
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±0.03mm
|
|
3.0≤d<6.5
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300 – 600
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±0.05mm
|
|
|
6.5≤d<10.0
|
200
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±0.08mm
|
7. Application:
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Grade
|
tungsten content(%)
|
usage
|
|
WALI
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>=99.92
|
Manufacturing wire of high color lamp, wire of shockproof lamp and double-spiral wire
Manufacturing wire of incandescent lamp, cathode of transmitting tube, hyperthermia electrode and reaming tungsten wire
Manufacturing folding heating cord of electron tube
|
|
WAL2
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>=99.92
|
Manufacturing wire of fluorescent lamp
Manufacturing heating cord of electron tube, wire of incandescent lamp, and reaming tungsten wire
Manufacturing folding heating cord of electron tube, grid wire and cathode
|
|
W1
|
>=99.95
|
Manufacturing reaming tungsten wire and heating components
|
|
W2
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>=99.92
|
Manufacturing grid side rod of electron tube and reaming tungsten wire
|