99.95% Pure Tungsten Products for Sapphire Industry Tungsten Square
Bars
Because of super high melting point 3400°C of pure tungsten
material, tungsten squre base are widely used in steel making
industry and sapphire industry. The bars are applied in the
sapphire growth furnace, reflection shield, heating tape and so on.
The connecting pieces are applied in vacuum furnace.
The features of the tungsten square bars
The purity of the tungsten square bar is higher than 99.95%. The
density of the tungsten bars is 19.3g/cm3. The size of the tungsten
bars is T0.05-50mmxW50-500mmxL100-1000mm. The surface of the
tungsten square bars is chemical cleaned or the polished. The
tungsten square bars meet the standard ASTM B760/GB T3875.
Application of tungsten square bars
The tungsten square bars are widely used in electronics,
illumination, vacuum plating, electron-vacuum, shield and the high
temperature furnace industry.
Pure tungsten square bars specification
| Purity | >=99.95% |
| Density | 19.3g/cm3 |
| Size | 1.0 - 120mm x W50-500mm x L100-1000mm |
| Surface | Chemical cleaned/polished |
| Standard | ASTM B760/GB T3875 |
Specifications of Tungsten Square Bars:
Tolerance for the tungsten Bars |
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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