Tungsten wire
Grade:w1/2,WAL1,WAL2,WAL3
Dia:0.08-15mm
standards: GB/T 14842-1993 ASTM B 392-95
lowest price,high quality.

TypePurity of tungsten TypeApplication

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.

Tungsten rodsTypePurity of tungsten Application

WAl1	≥99.92	Filament, cathode and components for electron tubes, electrode for gas discharge tube etc.
WAl2
WAl3	≥99.92	Grid side rod, lead, support, electrode for gas discharge lamp etc.
W1	≥99.95	Grid side rod, lead, support, electrode etc.
W2	≥99.92

 

Finished formSpecified diameterMinimum length, mmDiameter tolerance

Wrought	2.8≤d<5.0	600	± 2%
	5.0≤d<6.5	300
	6.5≤d<11.0	200
Straightened	0.8≤d<1.0	1000	± 2%
	1.0≤d<3.0	800
Ground	0.8≤d<3.0	800 – 1000	±0.03mm
	3.0≤d<6.5	300 – 600	±0.05mm
	6.5≤d<10.0	200	±0.08mm