Molybdenum Rhenium Alloy Foil

• High-performance molybdenum-rhenium alloy foil
• Excellent high-temperature strength
• Improved ductility compared with pure molybdenum
• Excellent resistance to thermal cycling
• Good dimensional stability at elevated temperatures
• Suitable for vacuum and controlled-atmosphere environments
• Available in multiple Mo-Re alloy compositions
• Thin-gauge foil available for precision applications
• Annealed and cold-worked conditions may be available
• Precision slit, cut-to-size, and custom foil may be available
• COA and material certification available as applicable

Property	Typical Specification
Material	Molybdenum-Rhenium Alloy
Alloy System	Mo-Re
Common Compositions	Mo-41Re, Mo-44.5Re, Mo-47.5Re, Mo-50Re, custom
Composition Basis	wt% or at% must be specified
Base Metal	Molybdenum
Alloying Element	Rhenium
Appearance	Metallic gray/silver
Crystal Structure	BCC, composition and condition dependent
Density	Approximately 10.0–13.0 g/cm³, composition dependent
Melting Range	Approximately 2,500–3,000°C, composition dependent
High-Temperature Strength	Higher than pure Mo in many conditions
Ductility	Improved relative to pure Mo
Thermal Stability	Excellent
Electrical Conductivity	Composition and condition dependent
Purity	Alloy and supplier dependent
Condition	Annealed, recrystallized, cold rolled, custom
Thickness	Thin foil through heavier gauge; custom
Width	Slit or sheet width; custom
Length	Coil, strip, sheet, or cut-to-length; custom
Surface	Mill, rolled, bright, cleaned, or custom
Documentation	COA / material certification available as applicable

• Molybdenum-41% Rhenium Foil
• Mo-41Re Foil
• Molybdenum-44.5% Rhenium Foil
• Mo-44.5Re Foil
• Molybdenum-47.5% Rhenium Foil
• Mo-47.5Re Foil
• Molybdenum-50% Rhenium Foil
• Mo-50Re Foil
• High-Purity Mo-Re Foil
• Annealed Mo-Re Foil
• Cold-Rolled Mo-Re Foil
• Recrystallized Mo-Re Foil
• Custom Mo-Re Alloy Foil

1. What is molybdenum rhenium alloy foil?

Molybdenum rhenium alloy foil is a thin, rolled form of a Mo-Re refractory alloy designed for applications requiring high-temperature performance, thermal stability, and improved ductility compared with pure molybdenum.

2. What are common Mo-Re alloy compositions?

Common compositions include Mo-41Re, Mo-44.5Re, Mo-47.5Re, and Mo-50Re. Custom compositions can also be sourced. Customers should specify whether the composition is expressed in weight percent or atomic percent.

3. Why add rhenium to molybdenum?

Rhenium can substantially improve the ductility, toughness, workability, and high-temperature performance of molybdenum. Mo-Re alloys are therefore used where pure molybdenum may have insufficient ductility or thermal-cycling performance.

4. Is Mo-Re foil suitable for high-temperature applications?

Yes. Mo-Re alloys are designed for demanding high-temperature environments, particularly vacuum, inert, or controlled-atmosphere applications. Maximum service temperature depends on alloy composition and operating conditions.

5. Can Mo-Re foil be supplied in very thin thicknesses?

Yes. Thin-gauge Mo-Re foil can be sourced for precision applications. Thickness, width, tolerance, surface finish, and condition should be specified when requesting a quotation.

6. Can REG Metals provide custom Mo-Re foil?

Yes. REG Metals can source custom Mo-Re foil compositions, thicknesses, widths, lengths, tolerances, surface finishes, and material conditions, subject to supplier capability.