Tungsten Foil
Tungsten Foil
- Tungsten foil Molecular Weight: 183.85
- Melting Point: 3410 °C
- Boiling Point: 5900 °C
- Density: 19.3 g/cm3
- Electrical Resistivity: 5.65 microhm-cm @ 27 °C
- Thermal Conductivity: 1.73 W/cm/K @ 298.2 K
- Tensile Strength: 750 MPa
- Young’s Modulus: 411 GPa
Description and Specification of Tungsten Foil
A tungsten sheet is a super-thin slice of rigid Tungsten metal. It is strong, hard to break, and can handle high heat and rust. The tungsten dust is shaped into a bar and flattened to make these sheets. Afterward, methods like squeezing it in a vacuum, rolling it hot or cold, and baking it to get it super-thin are used. Making tungsten sheets is complex but worthwhile. It requires advanced equipment like specialized mills and presses to produce a sleek, dark, and delicate metal surface, sometimes just a fraction of a millimeter thick. Tungsten sheets come in various dimensions and shapes. The foil often looks like steel but can be finished to meet specific needs. Companies that produce tungsten foil serve many industries. It is perfect for hot furnaces, coating methods, and electronic parts. The extreme thinness of tungsten sheets allows to combine with other materials such as metal or glass. This universal product is vital in many manufacturing processes, from high-tech electronics to industrial machinery.
Technical Specification
| Technical Specifications of Tungsten Foil | |
|---|---|
| Product Name | Tungsten Foil |
| Material | High-Purity Tungsten (W) |
| Chemical Symbol | W |
| Atomic / Molecular Weight | 183.85 g/mol |
| Appearance | Lustrous Silver Metallic Foil |
| Form | Thin Metallic Sheet / Foil |
| Density | 19.3 g/cm³ |
| Melting Point | 3410°C |
| Boiling Point | 5900°C |
| Electrical Resistivity | 5.65 µΩ·cm at 27°C |
| Electrical Conductivity | Good |
| Thermal Conductivity | 1.73 W/cm·K (≈173 W/m·K) |
| Tensile Strength | 750 MPa |
| Young’s Modulus | 411 GPa |
| Mechanical Strength | Excellent |
| High-Temperature Stability | Exceptional |
| Vapor Pressure | Very Low |
| Radiation Shielding | Excellent |
| Vacuum Compatibility | Excellent |
| Surface Finish | Silver Metallic Finish; Custom Finishes Available |
| Available Thickness | Custom / Application-Specific Foil Thickness |
| Available Dimensions | Custom Sizes and Shapes Available |
| Fabrication Method | Hot / Cold Rolling, Vacuum Processing and Annealing |
| Cutting & Customization | Can Be Cut and Customized for Specific Applications |
| Typical Applications | Vacuum Furnaces, Evaporation Boats, Semiconductor Components, Capacitors, Vacuum Tubes, Thin-Film Circuits, Rocket Nozzles, Heat Shields, X-Ray Targets and Radiation Shielding |
| Storage Conditions | Store in an Airtight Container at Room Temperature Away from Moisture and Contaminants |
Features of Tungsten Foil
- Silver Surface: Tungsten foil has a distinctive, lustrous silver shine on its surface. This aesthetic quality makes it visually appealing for various applications, especially in decorative or visible components.
- Radiation Shielding: The foil provides radiation shielding properties comparable to lead plates. This feature makes the foil an excellent choice for medical and industrial applications where radiation protection is crucial.
- Easy to customize: It is thin enough to cut with regular scissors. Therefore, it can be easily customized and integrated into various products and systems.
- Highly Durable: It demonstrates excellent strength. It can withhold repeated bending, folding, and retraction without losing its integrity. This durability ensures long-lasting performance in demanding applications.
- Environmentally Friendly: Tungsten is simple and does not pose considerable environmental hazards compared to other metals in similar applications, making it a preferable choice for industries.
- High Thermal Plasticity: It can be easily molded into objects with cylindrical or intricately curved surfaces, which improves its application in manufacturing processes.
- High Melting Point: Tungsten sheets stay strong even in extremely high temperatures without falling apart. This makes the sheets perfect for super-hot ovens and other places where regular metals would melt or weaken.
- Low Vapor Pressure: The low vapor pressure of it makes it suitable for use in vacuum environments. This property is precious in applications such as vacuum furnaces and specific electronic components.
Applications
Tungsten foil is used in industrial furnaces because it can withstand high temperatures. Due to its high melting point and low vapor pressure, tungsten foil is also used in evaporation boats and semiconductor components. It is used as a base material for capacitors, vacuum tubes, and thin-film circuits in the electrical and electronics industries.
Tungsten foil is used to manufacture rocket nozzles, heat shields, and radiation protection for spacecraft in the aerospace and defense sectors. It is also used for X-ray targets, radiation shields, and surgical instruments. The energy sector, the automotive industry, jewelry making, and luxury goods production also use tungsten foil.
Comparison
| Parameter | Tungsten Foil | Titanium Foil | Nickel Foil | Copper Foil |
|---|---|---|---|---|
| Material | Tungsten (W) | Titanium (Ti) | Nickel (Ni) | Copper (Cu) |
| Density | 19.3 g/cm³ | 4.54 g/cm³ | 8.90 g/cm³ | 8.96 g/cm³ |
| Melting Point | 3410°C | 1668°C | 1453°C | 1083.4°C |
| Electrical Resistivity | 5.65 µΩ·cm | 42.0 µΩ·cm | 6.97 µΩ·cm | 1.678 µΩ·cm |
| Electrical Conductivity | Good | Moderate | Good | Outstanding |
| Thermal Conductivity | ~173 W/m·K | 21.9 W/m·K | 90.9 W/m·K | ~401 W/m·K |
| Mechanical Strength | Exceptional | Very High | High | Moderate |
| Young’s Modulus | 411 GPa | ~116 GPa | Moderate to High | 110–128 GPa |
| Weight | Very Heavy | Lightweight | Heavy | Heavy |
| High-Temperature Performance | Exceptional | Excellent | Very Good | Moderate |
| Corrosion Resistance | Very Good | Outstanding | Excellent | Good |
| Vacuum Compatibility | Excellent | Excellent | Very Good | Good |
| Low Vapor Pressure | Excellent | Very Good | Good | Moderate |
| Radiation Shielding | Excellent | Limited | Moderate | Moderate |
| Thermal Shielding | Excellent | Very Good | Good | Good |
| Semiconductor Applications | Excellent | Excellent | Excellent | Excellent |
| Vacuum Furnace Applications | Excellent | Good | Good | Limited |
| Aerospace Applications | Excellent | Excellent | Good | Moderate |
| Electronics Applications | Excellent | Very Good | Excellent | Excellent |
| Typical Applications | Vacuum Furnaces, X-Ray Targets, Radiation Shields, Evaporation Boats, Aerospace, Thin-Film Electronics | Aerospace, Fuel Cells, MEMS, Sensors, Chemical Processing | Batteries, Fuel Cells, Heating Elements, Electrochemistry, EMI Shielding | PCBs, Batteries, Flexible Circuits, EMI Shielding, Heat Transfer |
| Relative Cost | Premium | Premium | Moderate | Moderate |
| Best Choice For | Extreme Heat, Vacuum & Radiation Applications | Lightweight, Corrosion-Resistant Applications | Battery & Electrochemical Applications | Maximum Electrical & Thermal Conductivity |
| Key Advantage | Exceptional Melting Point, Strength & Vacuum Performance | Superior Strength-to-Weight Ratio | Excellent Balance of Conductivity & Corrosion Resistance | Highest Electrical & Thermal Conductivity |
How to Use?
- Store the product in airtight containers at room temperature.
- Avoid exposure to light and moisture.
- Make sure there is enough ventilation.
- Use local exhaust ventilation or engineering controls to maintain exposure below occupational limits.
- Good housekeeping and sanitation must be followed.
- To prevent fire hazards, avoid dust collection.
Why Choose us?
Techinstro has more than ten years of experience as a leading manufacturer and supplier of tungsten foil. We are pioneers in the field of manufacturing. We provide high-quality foils at very affordable prices. Our commitment to technological advancements ensures our clients get the best products and after-sales services. Customers from around the globe come back to us due to our dedication and service excellence. Contact us today for research requirements or any bulk industrial requirements for Tungsten foil.
FAQ's
High-purity tungsten (W); molecular weight 183.85.
Lustrous silver/dark metallic thin sheet; often resembles steel.
The density is 19.3 g/cm³.
The melting point is 3410 °C (one of the highest of any metal).
The boiling point is 5900 °C.
The thermal conductivity is 1.73 W/cm·K (≈173 W/m·K, at 298 K).
The tensile strength is 750 MPa.
The Young’s modulus is 411 GPa (very stiff).
Yes, shielding comparable to lead plates, useful for medical and industrial radiation protection.
Yes, thin enough to cut with regular scissors and mould into cylindrical or curved shapes (high thermal plasticity).
Yes, withstands repeated bending, folding, and mechanical stress without cracking.
Yes, its low vapor pressure suits vacuum furnaces and electronic components.
Industrial/vacuum furnaces, evaporation boats, semiconductor components, capacitors, vacuum tubes, thin-film circuits, rocket nozzles and heat shields.