Tungsten Tube
- Highest melting point (3422°C) among all metals for extreme thermal environments
- Excellent high-temperature strength and creep resistance
- Low vapor pressure minimizes contamination in vacuum processes
- Available in sintering or fully forged condition with density up to 19.2 g/cm³
- Customizable dimensions: OD up to 500mm, wall thickness up to 30mm, length up to 2000mm
Description Of Tungsten Tube
Tungsten tube is a precision-engineered tubular product manufactured from high-purity tungsten metal (purity ≥99.95%). Leveraging tungsten’s exceptional physical properties—including the highest melting point of all metals at approximately 3422°C (6192°F), high density of 19.25 g/cm³, low coefficient of thermal expansion, and excellent thermal and electrical conductivity—tungsten tubes deliver reliable performance in the most demanding high-temperature environments.
Tungsten tubes are produced through powder metallurgy, followed by sintering, forging, and precision machining processes. Depending on the manufacturing method, the density of tungsten tubes ranges from 18.2 g/cm³ (sintered condition) to 19.2 g/cm³ (fully forged condition). The tubes feature a silver-gray metallic luster with a smooth, clean surface, and are available in a wide range of diameters, wall thicknesses, and lengths to suit diverse application requirements.
The excellent high-temperature strength, hardness, and wear resistance of tungsten tubes make them indispensable components in high-temperature furnace systems, thermocouple protection assemblies, sapphire crystal growth equipment, and aerospace applications. Their low vapor pressure at elevated temperatures ensures minimal contamination in vacuum environments, maintaining process purity and product quality.
Features Of Tungsten Tube
Highest Melting Point: With a melting point of approximately 3422°C—the highest among all metals—tungsten tubes can withstand extreme temperatures without melting or deformation.
High Density: Tungsten tubes offer densities ranging from 18.2 g/cm³ (sintered) to 19.2 g/cm³ (fully forged), providing excellent mechanical strength and radiation shielding capabilities.
Excellent High-Temperature Strength: Tungsten maintains exceptional mechanical strength and creep resistance at elevated temperatures, ensuring structural integrity and long service life in demanding thermal environments.
Low Vapor Pressure: Tungsten’s extremely low vapor pressure at high temperatures minimizes evaporation and contamination in vacuum applications, maintaining process purity.
Low Thermal Expansion Coefficient: The low coefficient of thermal expansion ensures dimensional stability during thermal cycling, reducing the risk of fatigue failure.
Corrosion Resistance: Tungsten tubes offer excellent resistance to corrosion in various environments, maintaining performance and reliability over extended service life.
High Purity: Available with purity ≥99.95%, ensuring consistent material properties and reliable performance in critical applications.
Specifications Of Tungsten Tube
| Parameter | Specification |
|---|---|
| Material | High-purity tungsten (W ≥ 99.95%) |
| Melting Point | ~3422°C (3410–3422°C) |
| Density | 18.2 – 19.3 g/cm³ |
| Boiling Point | ~5900°C |
| Electrical Resistivity | ~5.4 µΩ·cm (at 20°C) |
| Thermal Expansion Coefficient | ~4.5×10⁻⁶/°C |
| Tensile Modulus | ~411 GPa |
| Hardness (Vickers) | 360 – 500 kgf/mm² |
| Appearance | Silver-gray metallic luster |
| Standard Compliance | ASTM B760, GB/T 4187 |