| Material Type | Tungsten |
| Symbol | W |
| Atomic Weight | 183.84 |
| Atomic Number | 74 |
| Purity | 3N5-5N |
| 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) | 19.3 |
| Z Ratio | 0.163 |
| E-Beam | Good |
Vacuum evaporation means the evaporation materials are evaporated to atoms or molecules in vacuum by current heating, electron beam heating and laser heating. Atoms or molecules make rectilinear motion to impact substrate surface and condense to form films.
NEXTECK (NEXTECK internationaltradingltd.com) provides various high quality evaporation materials, with a full range of purities and sizes, to meet customers’ needs. Our precious and non-precious films are widely used in automotive, aerospace, physic, flat panel display, magnetic/light recording medium, coated glass, optical coating , hard film, decorative film and other fields.
