What Is Pure Tungsten Plate/Sheet/Foil?
Pure tungsten plate/sheet/foil is made from pure tungsten metal, a very hard and dense material with the highest melting point of all metals. Typically, pure tungsten plates contain 99.95% or greater purity of tungsten.
Purity: W≥99.95% or greater than 99.999%
Density: ≥19.1g/cm³;
Flatness: ≤2%;
WIDIT possesses 10 sets of rolling mill units of various specifications, which allow for a faster production cycle to provide customers with a variety of shapes and sizes of tungsten and molybdenum foil, sheet, and plate materials. Our produced plates undergo cross rolling and finish with heat treatment. The rolling process is stable, resulting in plates with excellent impact toughness.
Features – A variety of materials to choose from:
●High-purity tungsten: tungsten purity greater than 99.999%, with fewer impurities
●Pure tungsten: tungsten purity greater than 99.95%
●Rare earth-doped tungsten: higher temperature resistance, better ductility
●AKS potassium-doped tungsten:higher temperature resistance, more deformation resistant
(We can also collaborate with customers to custom-develop unique materials, aiming for the best-suited performance characteristics.)
Dimensions and Tolerances
| Thickness(mm) | Thickness Tolerance (mm) | Width (mm) | Width Tolerance(mm) | Length (mm) | Length Tolerance(mm) | Supply Status |
| ＜0.2 | ±0.02 | 10~150 | ±2 | 500 | ±2 | Cold rolled |
| 0.3 | ±0.03 | 10~250 | ±2 | 500 | ±2 | |
| 0.4 | ±0.04 | 10~250 | ±2 | 500 | ±2 | |
| 0.5 | ±0.05 | 10~300 | ±2 | 500 | ±2 | |
| 0.8 | ±0.07 | 10~300 | ±0.5 | 500 | ±0.5 | |
| 1 | ±0.08 | 10~300 | ±0.5 | 600 | ±0.5 | |
| 1.5 | ±0.12 | 10~400 | ±0.5 | 600 | ±0.5 | |
| 2 | ±0.12 | 10~500 | ±0.5 | 700 | ±0.5 | |
| 3 | ±0.20 | 10~500 | ±0.5 | 600 | ±0.5 | Hot rolled |
| 4 | ±0.30 | 10~500 | ±0.5 | 600 | ±0.5 | |
| ≥5.0 | ±0.40% | 10~550 | ±0.5 | 600 | ±0.5 |
Production Process
Applications
Tungsten deep-processed products are widely used in the following applications:
▲In sapphire crystal furnaces and vacuum furnaces: tungsten heat insulation screens/thermal screens, support racks inside the furnace, loading boats, etc.
▲In the single crystal silicon industry: tungsten heat insulation screens
▲In the vacuum coating industry: evaporation coating tungsten boats, tungsten cathodes, tungsten planar targets
▲In the semiconductor and electronics industry: MOCVD tungsten planar heaters, LED chip substrates, high-temperature-resistant parts for MOCVD, components of the ion source in ion implantation equipment
▲In the medical equipment industry for manufacturing CT machine collimator blades
▲In the coating industry for use as sputtering targets in plasma deposition processes.
