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Tungsten (W) Sputtering Targets

Tungsten (W) Sputtering Targets

    Tungsten (W) Sputtering Targets


Tungsten, also known as Wolfram, is one of the densest elements in the world. It has a density of 19.3 g/cc, a melting point of 3,410°C, and a vapor pressure of 10-4 Torr at 2,757°C. It is lustrous and grayish-white in appearance. It is known to have the highest melting point of all metals and its characteristic hardness can make it very difficult to machine and forge in pure form. Tungsten is commonly used to make electric filaments. Tungsten carbide is found in drills, saws, and jewelry. Tungsten is evaporated under vacuum for the production of semiconductors, fuel cells, and sensors.

Tungsten (W) Specifications:

Material Type

Tungsten

Symbol

W

Atomic Weight

183.84

Atomic Number

74

Color/Appearance

Grayish White, Lustrous,   Metallic

Thermal Conductivity

174 W/m.K

Melting Point (°C)

3,410

Coefficient of Thermal   Expansion

4.5 x 10-6/K

Theoretical Density   (g/cc)

19.25

Z Ratio

0.163

Sputter

DC

Max Power Density

(Watts/Square Inch)

100*

Type of Bond

Indium, Elastomer

Comments

Forms volatile oxides.   Films hard and adherent.

 


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