Pure tungsten crucible

tungsten crucible is a high-performance container made from tungsten (W), a refractory metal with an extremely high melting point of 3,422°C (6,192°F). Due to its excellent thermal, mechanical, and chemical properties, tungsten crucibles are widely used in high-temperature and corrosive environments, particularly in industries like metallurgy, aerospace, and electronics.

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Key Characteristics of Tungsten Crucibles
1. Ultra-High Melting Point – Tungsten has the highest melting point of all metals, making it ideal for extreme heat applications.
2. Excellent Thermal Conductivity – Ensures uniform heat distribution, crucial for precision processes.
3. Exceptional High-Temperature Strength – Maintains structural integrity even under prolonged exposure to extreme heat.
4. Good Corrosion and Oxidation Resistance – Especially in vacuum or inert atmospheres, tungsten is highly resistant to chemical degradation.
5. Low Thermal Expansion – Reduces deformation under high-temperature conditions.
Applications
- Crystal Growth: Used for growing sapphire, silicon, and other semiconductor crystals.
- Metal Melting & Evaporation: Essential for rare-earth metal smelting, induction heating, and PVD (Physical Vapor Deposition) coating.
- Aerospace & Defense: Used in high-temperature propulsion systems and specialized coatings.
- Nuclear & Energy Industry: Ideal for applications requiring radiation resistance and extreme heat tolerance.
Since tungsten oxidizes at high temperatures in air, tungsten crucibles are mainly used in vacuum or inert gas environments (such as argon or nitrogen).