Tungsten Foil: A Comprehensive Guide for Buyers in 2025
Tungsten foil is a versatile material known for its high melting point, durability, and excellent thermal conductivity. Widely used in industries like aerospace, electronics, and medical devices, it's crucial to understand its properties and sourcing options. This guide will help you navigate the tungsten foil market, especially when buying from China in 2025.
How to Find Reliable Tungsten Foil from China in 2025
China remains a leading supplier of tungsten foil, offering competitive prices and quality. To find reliable suppliers:
- Check certifications like ISO 9001 and RoHS compliance
- Review supplier history and customer feedback
- Request material test reports
- Verify production capacity and lead times
Platforms like Alibaba can help connect with verified manufacturers, but always conduct due diligence.
What Buyers Should Know Before Buying Tungsten Foil from China
Before purchasing:
- Understand import regulations and tariffs
- Factor in shipping costs and logistics
- Consider minimum order quantities
- Negotiate payment terms (30% deposit is common)
- Plan for quality inspection upon arrival
Many Chinese suppliers now offer better English support and streamlined export processes compared to previous years.
Types of Tungsten Foil
Common tungsten foil varieties include:
- Pure Tungsten Foil (99.95% purity)
- Alloyed Tungsten Foil (with rhenium or molybdenum)
- Polished vs. Unpolished surfaces
- Various thicknesses (0.01mm to 1.0mm typically)
- Different widths (10mm to 500mm common)
Each type serves specific industrial applications based on required properties.
Functions and Features of Tungsten Foil
Key characteristics make tungsten foil valuable:
- Extreme heat resistance (melting point 3422°C)
- Excellent electrical conductivity
- High density (19.3 g/cm³)
- Good corrosion resistance
- Low thermal expansion
These properties enable uses in demanding environments where other metals fail.
Scenarios of Tungsten Foil
Typical applications include:
- Electronics: Heat sinks, semiconductor components
- Medical: Radiation shielding, X-ray equipment
- Aerospace: Rocket nozzles, thermal protection
- Industrial: Furnace components, welding backing
- Research: High-temperature experiments
A 2024 industry report showed 32% of tungsten foil goes to electronics manufacturing.
How to Choose Tungsten Foil
Selection considerations:
- Determine required purity level
- Calculate optimal thickness for your application
- Consider surface finish needs
- Evaluate thermal and electrical requirements
- Check dimensional tolerances
Consult with engineers or material specialists for critical applications.
Tungsten Foil Q & A
Q: What's the price range for tungsten foil?
A: Prices vary from $50-$500/kg depending on purity, thickness, and quantity. Bulk orders typically get 15-30% discounts.
Q: How does tungsten foil compare to molybdenum foil?
A: Tungsten has higher melting point and density, but molybdenum is more ductile and often cheaper.
Q: What's the lead time for orders from China?
A: Standard products ship in 2-4 weeks; custom orders may take 6-8 weeks including shipping.
Q: Can tungsten foil be welded or machined?
A: Yes, but requires specialized techniques due to its hardness. Many suppliers offer pre-cut shapes.
Q: How should tungsten foil be stored?
A: Keep in dry conditions, preferably sealed with desiccant to prevent oxidation.
