Tungsten Wire Mesh
- Extremely high melting point (3420°C) for extreme thermal environments
- Excellent high-temperature strength and creep resistance
- Low vapor pressure minimizes contamination in vacuum processes
- High electrical resistivity and good thermal conductivity
- Available in plain weave and twill weave, 4–300 mesh, custom sizes
Description Of Tungsten Wire Mesh
Tungsten wire mesh is a two-dimensional or quasi-three-dimensional structural material made by weaving high-purity tungsten wire into a uniform grid pattern. The mesh is typically manufactured from pure tungsten wire with a purity of 99.95% or higher, and common weaving techniques include plain weave and twill weave. The mesh features a smooth and clean surface, free from broken wires or holes.
Tungsten wire mesh derives its exceptional performance from tungsten’s unique physical properties. With a melting point of approximately 3420°C—the highest among all metals—tungsten wire mesh can withstand extreme temperatures without melting or deformation. Its density of 19.25 g/cm³, low coefficient of thermal expansion (approximately 4.5×10⁻⁶/°C), and excellent high-temperature strength make it an ideal material for demanding thermal applications. The mesh also exhibits extremely low vapor pressure at elevated temperatures—maintained at approximately 10⁻⁶ Pa at 2000°C—making it non-contaminating in high-vacuum environments.
The woven structure of tungsten wire mesh transforms individual wires into a continuous load-bearing framework with spatial functionality. Depending on the mesh count, wire diameter, and weave pattern, the mesh can be engineered to achieve specific aperture sizes, open areas, and mechanical properties to suit a wide range of applications.
Features Of Tungsten Wire Mesh
Extremely High Melting Point and Thermal Stability: With a melting point of approximately 3420°C, tungsten wire mesh remains stable under extreme heat without warping or damage. It can withstand continuous service temperatures above 2000°C without structural degradation.
Good Electrical and Thermal Conductivity: The mesh efficiently conducts electricity and heat, making it suitable for heating element applications.
Corrosion and Oxidation Resistance: Tungsten wire mesh resists corrosion in acidic and alkaline environments and shows strong oxidation resistance even at high temperatures under vacuum or inert gas protection.
Low Thermal Expansion: With a very low thermal expansion coefficient (approximately 4.5×10⁻⁶/°C), tungsten wire mesh barely changes size under temperature fluctuations, ensuring structural stability.
Uniform Mesh and High Precision: The mesh features a tightly woven structure with square and uniform holes, no broken ends, and no deformation in the effective working area. Surface is smooth and oil-free.
Application Of Tungsten Wire Mesh
Vacuum Furnace Heating Elements: Tungsten wire mesh is widely used as resistance heating elements in vacuum furnaces, single crystal furnaces, ceramic sintering furnaces, and other high-temperature systems. The mesh structure provides uniform heat distribution and can achieve service temperatures up to 2500°C or higher. It is also used as heat treatment support meshes and radiation shielding screens in furnace hot zones.
Electromagnetic and RF Shielding: Tungsten wire mesh is used to manufacture electromagnetic shielding mesh for machinery, electrical devices, air conditioning systems, and microwave ovens to block electromagnetic interference (EMI) and radio frequency interference (RFI). Its excellent conductivity and durability make it effective at protecting precision electronic equipment from external interference.
High-Temperature Filtration: In the chemical and metallurgical industries, tungsten wire mesh serves as high-temperature filtration material for gases, liquids, and solid particles. It can withstand strong acids, alkalis, and corrosive environments, making it ideal for chemical processing, acid production, and hydrogen manufacturing.
Aerospace and Military: Tungsten wire mesh is used in aerospace applications for high-temperature structural parts, radiation shielding, and filtration of fuel and lubricating oils. Its high-temperature resistance and corrosion resistance meet the demanding requirements of aerospace working environments.
Optical and Light Wave Filtering: The mesh is used in optical devices for light wave filtering, particularly where high-temperature stability is required.
Medical and Scientific Research: Tungsten wire mesh is used in medical devices requiring high-temperature resistance and magnetic neutrality, as well as in radiation shielding applications. It is also employed in research laboratories for various experimental setups.
Specifications Of Tungsten Wire Mesh
| Parameter | Specification |
|---|---|
| Material | High-purity tungsten (W ≥ 99.95%) |
| Melting Point | ~3420°C (~3380–3420°C depending on grade) |
| Density | 19.25 g/cm³ |
| Electrical Resistivity | ~5.3–5.6×10⁻⁸ Ω·m |
| Thermal Conductivity | ~170 W/m·K |
| Thermal Expansion Coefficient | ~4.5×10⁻⁶/°C |
| Mesh Count Range | 4 mesh – 300 mesh (up to 400+ available) |
| Wire Diameter Range | 0.01 mm – 2.0 mm (customizable) |
| Aperture Range | 0.018 mm – 23.7 mm |
| Width Range | 5 mm – 2000 mm |
| Weave Types | Plain weave, twill weave |
| Surface Finish | Black (as-drawn) or white (electrolytically cleaned) |
| Standard Compliance | ASTM B760 / GB/T 4181 |