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Tungsten (W) Pellets & Pieces Evaporation Materials

Time:2019/06/10 丨 source:未知 丨 visit count:

3N5 Tungsten (W) Granules for Thin Film Coating by Evaporation







Specifications
Material Type Tungsten
Symbol W
Purity 99.95%
Size φ3*3mm
Package Unit 500g/ 1kg
Theoretical Density (g/cc) 19.25 Z Ratio 0.163
Color/Appearance Grayish White, Lustrous, Metallic E-Beam Good
Atomic Weight 183.84 Thermal Evaporation Techniques Direct in Hearth
Melting Point (°C) 3,410 E-Beam Crucible Liner Material Tantalum
Coefficient of Thermal Expansion 4.5 x 10-6/K Temp. (°C) for Given Vap. Press. (Torr) 10-8:  2,117
10-6:  2,407
10-4:  2,757 
Thermal Conductivity 174 W/m.K Comments Forms volatile oxides. Films hard and adherent.
 





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