Materials overview
Its melting point is the highest after tungsten, and it does not lose ductility at high temperature. It is the core material in W-Re thermocouples and electron beam filaments.
With a melting point of 3,186℃ it comes after tungsten. Its strength does not fall at high temperature and recrystallization embrittlement is limited.
Added to tungsten or molybdenum it greatly improves their machinability and ductility, which makes it a material for W-Re thermocouples and rocket nozzles.
Key Property Values
These are the values engineers check first at the design stage. Actual delivery specifications follow the per-lot test report.
| Item | Value | Description |
|---|---|---|
| Melting point | 3186 °C | After tungsten |
| Density g/cm³ | 21.0 | Among the highest of any metal |
| Thermal conductivity W/m·K | 48 | Relatively low |
| Thermal expansion µm/m·K | 6.2 | At room temperature |
| Recommended atmosphere | Vacuum | Beware of oxidation at high temperature |
| Supply grades | 2 | Pure Re · W-Re alloys |
Figures are representative values. The thermal expansion coefficient is taken from published literature and needs review before release.
Key Advantages
How these figures translate into advantages in actual processes.
Strength retained at ultra-high temperature
A melting point of 3,186℃ and excellent high-temperature creep resistance make it suitable for rocket nozzles and thrust chambers.
An addition that improves ductility
A small amount in W or Mo reduces recrystallization embrittlement and improves machinability.
Thermocouple stability
The W-Re combination reads temperature reliably up to 2,300℃.
Supply Forms · Machining Options
| Form | Specification |
|---|---|
| Wire · Rod stock | Ø 0.40 – 1.50 mm |
| Sheet · Plate | On request |
| Rod · Bar | On request |
| Custom machined parts | To drawing |
Custom Machining Capability
- Cutting to drawing dimensions · CNC / MCT machining
- Wire EDM · laser machining · welded assemblies
- Forming (bending · deep drawing) and surface treatment
- The same tolerances from a single prototype to full production
Related Products · Applications
Filaments
High-temperature filaments for electron beams and ion sources
Thermocouple material
Wire for W-Re thermocouples
Evaporation coils
Heating coils for high-temperature deposition
Custom machined parts
Precision parts machined to drawing
