Coarse Tungsten Wire

Coarse tungsten wire generally refers to tungsten wire with a diameter of φ1.0 mm and above. It can be pure tungsten wire, doped tungsten wire, or tungsten alloy wire, typically produced via powder metallurgy, followed by wire drawing and heat treatment processes.

1. Properties of Coarse Tungsten Wire
Coarse tungsten wire features a high melting point, high density, and low vapor pressure, ensuring stable performance in high-temperature environments. Its larger cross-sectional area results in a lower evaporation rate, making it suitable for long-duration operation. It also offers strong load-bearing capacity and fracture resistance, maintaining structural stability under thermal and mechanical stress with reduced sagging. In addition, high-temperature strength and creep resistance help minimize dimensional changes during extended use, supporting structural reliability. The larger cross-section also promotes more uniform current distribution, improving heating stability. CTIA ensures consistent performance across applications by controlling material purity, microstructure, and dimensional consistency.

2. Specifications of Coarse Tungsten Wire
The diameter range of coarse tungsten wire is typically φ1.0 mm–φ3.0 mm, and may extend to φ5.0 mm or above for structural applications:

2.1 φ1.0–2.0 mm: used for medium load-bearing structures and heating supports.
2.2 φ2.0–3.0 mm: used for high-temperature load-bearing and fixing structures.
2.3 above φ3.0 mm: used for heavy-duty or critical structural components.

3. Surface Condition of Coarse Tungsten Wire
Coarse tungsten wire can be supplied in either black tungsten wire or cleaned tungsten wire condition depending on application requirements. Surface condition affects electrical contact behavior, heating efficiency, and compatibility with mating materials. In high-temperature or vacuum environments, a clean surface helps reduce instability factors, while black tungsten wire is also used directly in certain structural and heating applications. CTIA provides tailored surface treatment solutions based on specific application scenarios.

4. Applications of Coarse Tungsten Wire
Coarse tungsten wire is mainly used in applications where structural load-bearing and high-temperature stability are critical:

4.1 High-Temperature Support Structures
Used as support rods, hangers, or fixing components in environments above 1800℃, maintaining structural stability under high-temperature strength and creep resistance.

4.2 Heating Component Frameworks
Used as structural frames or supports for heating elements, ensuring geometric stability and spacing consistency of heating wires at high temperatures, thereby maintaining thermal uniformity.

4.3 Vacuum Furnaces and Heat Treatment Equipment
Used as structural components in vacuum or inert atmospheres, suitable for high-temperature sintering, annealing, and related processes.

4.4 Evaporation and High-Temperature Experimental Systems
Used for clamping or fixing materials, maintaining dimensional stability under high temperature and thermal cycling, and minimizing deformation impact on experimental results.

The performance of coarse tungsten wire is determined by intrinsic tungsten properties and dimensional structure. For sourcing decisions, appropriate diameter, material type, and surface condition should be selected based on application requirements to meet needs for strength, stability, and heating performance. CTIA leverages manufacturing expertise and application experience to control key parameters, ensuring stable performance across diverse applications while providing technical support.

For any inquiry, please contact tungsten wire manufacturer: CTIA GROUP

Email: sales@chinatungsten.com

Tel: 0086 592 5129696 / 0086 592 5129595

Website: www.tungsten.com.cn

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