Straight Tungsten Wire is manufactured from high-purity tungsten through precision drawing and straightening processes. It features good straightness, accurate dimensions, and stable performance under high-temperature and vacuum conditions. Compared with coiled tungsten wire, straight tungsten wire is easier to cut, position, and assemble for precision applications. Available in various diameters and lengths, it is commonly supplied for vacuum evaporation, semiconductor equipment, electron-emission components, and other high-temperature applications.

Key Features

High Temperature Resistance
With an extremely high melting point of approximately 3422°C, tungsten wire maintains structural stability in high-temperature applications.

Precision Straightness
Precision straightening ensures consistent wire geometry and supports accurate processing and assembly.

High Strength & Dimensional Stability
Provides good mechanical strength and helps minimize deformation during processing and high-temperature operation.

Low Vapor Pressure
Low vapor pressure enables stable performance in vacuum and elevated-temperature environments.

Stable Electrical Performance
Offers reliable electrical conductivity and thermal resistance for demanding high-temperature applications.

Typical Applications

Straight tungsten wire is widely used in high-temperature, vacuum, and precision applications due to its excellent thermal stability, dimensional accuracy, and reliable performance.

Vacuum Evaporation & Thin Film Deposition

Straight tungsten wire is commonly used as evaporation filaments in vacuum coating and PVD processes. Its high melting point and low vapor pressure help maintain stable performance during repeated high-temperature operation.

Electron Emission Components

Straight tungsten wire is used in cathodes, electron emitters, and other vacuum components that require reliable operation under high-temperature conditions.

Heating Elements

Straight tungsten wire is used in high-temperature heating components and furnace assemblies where heat resistance and dimensional stability are required.

Precision Components & Electrodes

With excellent straightness and dimensional consistency, straight tungsten wire can be processed into precision components, electrodes, and custom parts for specialized applications.

Straight vs Coiled Tungsten Wire

Straight tungsten wire and coiled tungsten wire are made from the same tungsten material but have different structures and application purposes. Straight wire provides better dimensional control and easier handling, while coiled wire offers a larger heating surface and flexible structure.

Item	Straight Tungsten Wire	Coiled Tungsten Wire
Shape	Straight wire form	Spiral coil form
Main Feature	Good straightness and dimensional accuracy	Larger surface area and flexible structure
Processing	Easy to cut, position, and assemble	Requires additional coiling process
Mechanical Performance	Maintains consistent shape during handling	Provides elastic structure for heating applications
Common Applications	Precision components, semiconductor equipment, vacuum evaporation, electron emission components	Heating elements, lamp filaments, and thermal processing equipment
Customization	Diameter and length can be customized	Coil diameter, pitch, and coil length can be customized

Manufacturing Process of Straight Tungsten Wire

High-Purity Tungsten Powder

High-purity tungsten powder is selected as the raw material.

Powder Metallurgy

The powder is pressed into billets for further processing.

High-Temperature Sintering

Sintering improves density and mechanical properties.

Precision Wire Drawing

The billet is drawn through multiple dies to achieve the required diameter.

Precision Straightening

Straightening ensures consistent geometry and dimensional accuracy.

Quality Inspection

Diameter, straightness, and surface quality are inspected before shipment

Packaging

Straight Tungsten Wire is carefully packed to prevent bending, surface damage, and moisture during storage and transportation. Packaging methods can be adjusted according to wire diameter, length, and shipping requirements.

Plastic tube or protective sleeve for straight wire
Vacuum packaging available upon request
Moisture-proof and shock-resistant packaging
Wooden cases for international shipments
Custom packaging and labeling available

FAQ

Q: What diameters are available for Straight Tungsten Wire?

A: Standard and custom diameters are available. Please contact us with your specific requirements.

Q: Can the wire be supplied in custom lengths?

A: Yes. Straight tungsten wire can be cut to the required length before shipment.

Q: What surface conditions are available?

A: Straight tungsten wire can be supplied in as-drawn or cleaned surface conditions, depending on the application.

Q: Is custom packaging available?

A: Yes. Packaging can be customized according to product dimensions and shipping requirements.

Q: What is the difference between straight and coiled tungsten wire?

A: Straight tungsten wire is supplied in a straight form for applications requiring accurate positioning and easy assembly. Coiled tungsten wire is designed for heating elements and applications that require a larger heating surface or flexible coil structure. Learn more about our Tungsten Wire products.

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