Tungsten And Tungsten Alloy Rod
1. Description of Tungsten And Tungsten Alloy Rod:
Tungsten alloy rods are made from metal powder at a certain high temperature using a specialized high-temperature powder metallurgy method. The tungsten alloy rod material consequently has strong heat conductivity, a low thermal expansion coefficient, and good material properties.
The utilization of tungsten alloy rod, a material with a high melting point and low thermal expansion coefficient, occurs at high temperatures. The addition of tungsten alloying elements improves machinability, toughness and weldability. The qualities of the material are based on producing tungsten alloy rods to solve the issues with heat treating other tool materials.
2. Specifications and Models of Tungsten And Tungsten Alloy Rod:
| Diameter (φ mm) | Diameter Tolerance% |
| Black tungsten rod | Polished Tungsten rod |
| 0.5≤φ<3.0 | ±1.5 | ±1.0 |
| 3.0≤φ<6.5 |
| 6.5≤φ<20 |
3. Application of Tungsten And Tungsten Alloy Rod:
Glass melting electrode.
Heating element and supporting components for high temperature furnaces.
Welding electrode.
Filament.
The surface of the polished tungsten rod has a silver-gray metallic luster, no obvious oxidation phenomenon, and the surface is uniform without defects such as delamination, cracks, burrs and longitudinal cracks. It has many excellent characteristics such as high density, high melting point, small size, extremely high wear resistance, extremely high hardness, high tensile strength, high elongation, high temperature resistance, etc., so it is mainly used in the manufacture of grid side rod brackets, Pinout, electrode, tungsten bracelet point material.
4. Chemical content of Tungsten And Tungsten Alloy Rod:
| Grade | W-1 | W-2 | W-3 |
| Impurity content does not exceed % | Pb | -- | -- | -- |
| Bi | -- | -- | -- |
| Sn | -- | -- | -- |
| Sb | -- | -- | -- |
| As | -- | -- | -- |
| Fe | 0.005 | 0.005 | 0.010 |
| Ni | 0.003 | 0.003 | 0.005 |
| Al | 0.002 | 0.002 | 0.005 |
| Si | 0.003 | 0.003 | 0.010 |
| Ca | 0.003 | 0.003 | 0.005 |
| Mg | 0.002 | 0.002 | 0.005 |
| Mo | 0.010 | 0.010 | 0.20 |
| P | 0.001 | 0.001 | 0.002 |
| C | 0.005 | 0.008 | 0.010 |
| O | 0.003 | 0.003 | 0.005 |
| N | 0.003 | 0.003 | -- |
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