W-1 99.95% Tungsten Products Wolfram Plates for Vacuum Furnace / Sapphire Growth
Tungsten metal has high melting point, good thermal and electrical conductivity as well as low vapor pressure at high temperatures. Such properties make tungsten metal a candidate for use as a high performance material in a variety of high temperature products and processes. In spite of its characteristic of oxidizing easily when heated in air, tungsten metal is widely utilized as a heating element material in industrial furnaces.
Pure Tungsten Plates Specifications:
Purity: >=99.95%
Density: 19.3g/cm3
Size: T0.05-50mmxW50-500mmxL100-1000mm
Surface: Chemical cleaned/polished
Standard: ASTM B760/GB T3875
Features of Tungsten Rods:
Surface: Black and polished
Purity: ≥ 99.95%
Density: ≥ 19.2g/cm3,
Surface roughness: < 1.6
Dia: 1.0-120mm
Standard: ASTM, GB
Application of Tungsten Plates:
Used in electronics, illumination, vacuum plating, electron-vacuum, shield, high temperature furnace industry.
Specifications of Tungsten Plates:
| Tolerance for the tungsten plates |
| Thickness(mm) | Thickness Tolerance | Width(mm) | Width Tolerance(mm) | Length(mm) | Length Tolerance(mm) |
| width≤200mm | width≥200-400mm |
| >1.0-2.0 | ±0.15 | ±0.25 | 50-400 | ±2 | 50-1000 | +5/-0 |
| >2.0-3.0 | ±0.30 | ±0.30 | 50-400 | ±2 | 50-1000 | +5/-0 |
| >3.0-4.0 | ±0.30 | ±0.40 | 50-400 | ±2 | 50-1000 | +5/-0 |
| >4.0-8.0 | ±0.40 | ±0.50 | 50-400 | ±2 | L | +5/-0 |
Material Testing Report of Pure Tungsten:
| W (> %) | Chemical Content (< %) |
| 99.95
| Fe | Ca | P | Sn | Al | Ni | N | Sb | Si | O | Pb | As |
| 0.005 | 0.003 | 0.001 | 0.0001 | 0.002 | 0.003 | 0.003 | 0.001 | 0.003 | 0.003 | 0.0001 | 0.002 |
| Mg | C | Bi | Mo | - | - | - | - | - | - | - | - |
| 0.002 | 0.005 | 0.0001 | 0.001 | - | - | - | - | - | - | - | - |
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