Good quality Solid Tungsten Cube - W1 WAL Tungsten Wire – Fotma

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Good quality Solid Tungsten Cube - W1 WAL Tungsten Wire – Fotma Detail:

We produce two types of tungsten wire – Pure tungsten wire and WAL (K-Al-Si doped) tungsten wire.

Pure tungsten wire is produced typically for re-straightening into rod products and for applications where there is a low alkali content requirement.

WAL tungsten wire which has been doped with trace amounts of potassium has an elongated interlocking grain structure with non-sag properties after re-crystallization. WAL tungsten wire is produced in sizes from less than 0.02mm up to 6.5mm in diameter and is used largely for lamp filament and wire filament applications.

Tungsten wire is spooled on clean, defect free spools. For very large diameters, tungsten wire is self coiled. Spools are level filled without piling near flanges. The outer end of the wire is properly marked and attached securely to the spool or self coil.

Tungsten Wire Application:

Type	Name	Kind	Applications
WAL1	Nonsag tungsten wires	L	Used in making single coiled filaments, filaments in fluorescent lamps and other components.
		B	Used in making coiled coil and filaments in High power incandescent bulb, stage decoration lamp, heating filaments, halogen lamp, special lamps etc.
		T	Used in making special lamps, exposition lamp of copy machine and lamps used in automobiles.
WAL2	Nonsag tungsten wires	J	Used in making filaments in incandescent bulb, fluorescent lamp, heating filaments, spring filaments, grid electrode, gas-discharge lamp, electrode and other electrode tubes parts.

Chemical Compositions:

Type	Kind	Tungsten content (%)	Total amount of impurity (%)	The content of each element (%)	Kalium content (ppm)
WAL1	L	>=99.95	<=0.05	<=0.01	50~80
	B				60~90
	T				70~90
WAL2	J				40~50
Note: Kalium should not be taken as impurity, and tungsten powder must be have been washed by acid.

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