Tungsten Crucible Product Description
Premium Tungsten Crucible for High-Temperature Applications
Discover the ultimate solution for demanding industrial processes with our tungsten crucible, engineered to deliver unmatched performance in extreme environments. Designed for precision, durability, and thermal stability, our crucible tungsten products are ideal for applications such as crystal growth, metal evaporation, semiconductor manufacturing, and advanced coating technologies. This product page details the features, specifications, and benefits of our tungsten crucible cup, tungsten crucible for coating, and tungsten crucible container, ensuring you find the perfect fit for your needs.
1. Product Overview
A tungsten crucible is a high-purity container crafted from sintered tungsten metal, renowned for its exceptional melting point (3,422°C), corrosion resistance, and thermal conductivity. Unlike conventional materials like graphite or ceramic, our tungsten crucible cup excels in vacuum or inert gas environments, making it indispensable for high-precision industries. Whether used as a tungsten crucible for coating in physical vapor deposition (PVD) systems or as a tungsten crucible container for molten metal handling, this product guarantees reliability under stress.
2. Key Features & Advantages
Unrivaled Temperature Resistance: Withstand temperatures up to 2,800°C, far exceeding molybdenum or tantalum alternatives.
Superior Density & Purity: 99.95% minimum purity and 19.3 g/cm³ density minimize contamination risks.
Corrosion Resistance: Resists acidic/alkali attacks, ensuring longevity in harsh chemical processes.
Customizable Designs: Available in cylindrical, conical, and rectangular shapes; tailored dimensions upon request.
Low Thermal Expansion: Maintains structural integrity during rapid heating/cooling cycles.
3. Technical Specifications
Parameter Specification
Material Pure Tungsten (W) or W-1% La₂O₃ Alloy
Purity ≥99.95%
Density ≥19.0 g/cm³
Max Operating Temp 2,800°C (5,072°F)
Surface Finish Machined, polished, or as-sintered
Standard Sizes 10–200 mm diameter, 10–300 mm height
Wall Thickness 1–15 mm (customizable)
4. Applications of Tungsten Crucibles
Our tungsten crucible is the cornerstone of critical industrial processes:
Thin-Film Coating: As a tungsten crucible for coating, it holds evaporation materials (e.g., gold, aluminum) in e-beam deposition systems.
Single Crystal Growth: Essential for sapphire, silicon carbide, and laser crystal production.
Vacuum Metallurgy: Melts refractory metals like titanium, platinum, and zirconium.
Semiconductor Manufacturing: Processes high-purity silicon and gallium arsenide.
Aerospace & Defense: Fabricates superalloys and composites under extreme conditions.
5. Why Choose Our Tungsten Crucible?
a. Advanced Manufacturing Process
Our tungsten crucible container is produced via precision powder metallurgy:
High-purity tungsten powder is isostatically pressed.
Sintered at 2,200–2,500°C to achieve near-theoretical density.
Machined using diamond tools for micrometer-level accuracy.
This ensures zero porosity, uniform grain structure, and resistance to thermal shock.
b. Performance Comparison
Material Max Temp (°C) Corrosion Resistance Cost Efficiency
Tungsten 2,800 Excellent High
Molybdenum 1,900 Good Moderate
Graphite 3,000 Poor (oxidizes) Low
c. Quality Assurance
100% inspected for cracks, porosity, and dimensional accuracy.
RoHS/REACH compliant; material test reports available.
6. Customization Options
Tailor your tungsten crucible cup to match unique requirements:
Size: Custom diameters, heights, and wall thicknesses.
Shape: Standard cylindrical design or complex geometries.
Alloys: Lanthanum oxide (W-La) for improved ductility.
Surface Treatment: Anti-stick coatings (e.g., Y₂O₃) for easier material release.
7. Handling & Maintenance Guidelines
To maximize the lifespan of your tungsten crucible container:
Preheating: Gradually heat to 500°C before full operation to avoid thermal stress.
Compatible Materials: Avoid molten salts (e.g., fluorides) that corrode tungsten.
Cleaning: Use ultrasonic baths with ethanol; never abrasive chemicals.
Storage: Keep in dry, inert environments to prevent oxidation.
8. FAQs
Q: What’s the maximum fill capacity for a tungsten crucible?
A: We recommend filling ≤80% to prevent overflow during thermal expansion.
Q: Can I use a tungsten crucible for coating in oxygen-rich environments?
A: No. Tungsten oxidizes above 500°C in air; operate under vacuum or argon.
Q: How do I choose between pure tungsten and W-La alloy?
A: W-La offers better creep resistance for cyclic heating applications.
Q: What’s the lead time for custom-sized crucibles?
A: 2–4 weeks, depending on complexity.
9. Ordering Information
Ready to purchase your tungsten crucible?
MOQ: 1 piece (standard sizes); 10 pieces for custom designs.
Packaging: Individually wrapped in anti-static foam, shipped in wooden crates.
Global Shipping: DHL/FedEx express options with real-time tracking.
According to dimension, tungsten crucibles could be divided into different group.
For small dimension crucibles like 20mm diameter, 50mm diameter, 80mm diameter, we will machine the crucibles from forged tungsten rod. This kind of tungsten crucible cup has higher density. It is widely used as thin film coating container.
For bigger dimension, in order to make it economic and easy to machine, we will sinter the crucible. And the lath the crucible to make it meets requirements. Sometimes when customer requires, we will sand blast the crucible surface.
For thin wall thickness crucible, we will make it by spinning suitable tungsten plate. Spinning will need special mould.
Also there is another kind of tungsten crucible--welding crucible. When it is necessary, we will welding the bending tungsten sheet into tungsten crucible.
At first we will make sure that we got all customer's requirements clear. Then place order to production department and inspection department. Each production process will test themselves if everything is right. And before shipping, all products will pass the packing department only after inspection department inspected that the products meet customer's requirements. If not, the products will go back to production department for fixing or remaking.
For production, normally our lead time is 20-30 days. But according to different products and different quantity, it changes a little. If your order is emergency, contact with us, we will find a way out to solve your problem. For shipping, normally we ship by express and air. Express takes about 7-10 days, and air 3-5 days. And if customer requires by sea, we will ship by sea, it takes normally 40-50 days.
All our products are shipped after strict inspection and safety packing. Inspection by each production process makes sure the quality is good. And the inspection department will inspect again carefully to make sure everything is right. But if quality issue really occurs, we are sorry, and we will be responsible. To fix the products or remake them, we will make everything right.
In order to keep our healthy cooperation, our payment term normally is 50% payment in advance, balance paid before shipping. And if customer needs, we will calculate the shipping cost for your reference.
