Tungsten-Rhenium Thermocouple Wire

Tungsten-Rhenium thermocouple wires are produced through vacuum melting and precision wire drawing, followed by cleaning and surface treatments to ensure consistency and reliability. They are commonly used in paired form and insulated with ceramic or alumina tubes for high-temperature thermocouple assemblies.

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Tungsten-Rhenium (W-Re) thermocouple wire is a high-temperature sensing material commonly used in extreme environments such as aerospace engines, metallurgy, and high-vacuum furnaces. This alloy system typically consists of two dissimilar wires—W-5%Re (Type C positive leg) and W-26%Re (Type C negative leg)—which form a thermocouple capable of measuring temperatures up to 2300°C with good stability and repeatability.

Key Features:
- Material Composition:
  – Type C: W-5%Re / W-26%Re
  – Type D: W-3%Re / W-25%Re
  – Type A: W-5%Re / W-20%Re
- High Temperature Capability: Suitable for continuous operation in environments exceeding 2000°C
- Excellent Thermoelectric Stability: Reliable EMF output over extended use
- Good Mechanical Strength: Maintains integrity in vacuum and inert gas environments at elevated temperatures
- Low Vapor Pressure: Ideal for use in ultra-high vacuum and aerospace applications
Applications:
- Aerospace engines and rocket propulsion systems
- Vacuum and hydrogen atmosphere furnaces
- Metal melting and heat treatment processes
- Crystal growth and semiconductor manufacturing
- Scientific research in extreme heat environments
Advantages:
- Wide temperature range: ~0°C to 2300°C
- Excellent thermal EMF linearity and sensitivity in high-temperature ranges
- Stable performance in vacuum, inert gases, and reducing atmospheres
- Customizable wire diameters (e.g., 0.05 mm to 0.5 mm) and insulation coatings