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TZM Molybdenum Foil/Sheet
Available Configurations
Properties common to all products in this list
| Thickness | Size |
|---|---|
| 0.125 mm (foil) to 10 mm (plate) | 10 x 10 mm to 300 x 300 mm |
Need custom configurations? Please contact us.
Key Features
TZM Molybdenum Alloy Foil (Mo-0.5Ti-0.1Zr) is a dispersion-strengthened molybdenum alloy foil combining substantially higher creep resistance and recrystallisation temperature than pure molybdenum with the alloy family’s characteristic high melting point, low thermal expansion, and good thermal conductivity:
Higher Creep Resistance and Recrystallisation Temperature Than Pure Molybdenum
Titanium and zirconium carbide precipitates pin grain boundaries and dislocations at elevated temperatures, raising the recrystallisation temperature by approximately 100–200 °C above pure molybdenum and providing substantially better creep resistance at service temperatures between 700 and 1400 °C.
High Melting Point for Ultra-High-Temperature Applications
Melting point of approximately 2610 °C supports use as a thermal shield, furnace liner, and electron beam evaporation substrate in ultra-high-temperature vacuum applications where the foil must maintain structural integrity and dimensional stability at temperatures that would melt or deform most other metallic foil materials.
Unique Balance of Ductility and Hardness in Foil Form
TZM provides better room-temperature ductility than pure sintered molybdenum sheet due to grain structure refinement by the carbide precipitates, while the precipitate dispersion adds hardness, supporting precision fabrication of thin foil components by cutting, shaping, and forming operations that would fracture coarser-grained molybdenum foil.
Low Thermal Expansion and High Thermal Conductivity
Low coefficient of thermal expansion and high thermal conductivity qualify TZM foil as a thermal shield, diffusion barrier, and heat spreader element in semiconductor manufacturing processes and advanced coating systems where dimensional stability under rapid thermal cycling and efficient heat transfer are simultaneously required.
Resistance to Deformation Under High-Temperature Service Loads
The dispersion strengthening mechanism provides resistance to creep deformation and sag under sustained service loads at elevated temperatures, qualifying TZM foil for structural roles in furnace components, thermocouple sheaths, and high-temperature electrode assemblies that pure molybdenum foil cannot sustain without creep distortion.
Industrial Applications
TZM Molybdenum Alloy Foil is used across aerospace, nuclear engineering, semiconductor manufacturing, and advanced coating technology wherever higher creep resistance and recrystallisation temperature than pure molybdenum must be combined in a precision foil component:
- ✦ Thermal Shields and Furnace Components in High-Temperature Vacuum Systems
- Used for thermal shields and furnace component liners in high-temperature vacuum systems, where the combination of high melting point, resistance to creep under sustained thermal loading, and lower recrystallisation temperature than pure molybdenum provide longer service life and better dimensional stability than alternatives at extreme operating temperatures.
- ✦ Electron Beam Evaporation Substrates in Semiconductor Manufacturing
- Applied as electron beam evaporation substrates in semiconductor manufacturing, where TZM’s thermal stability and high melting point support repeated high-power electron beam exposure without substrate deformation or contamination of the evaporated film.
- ✦ Diffusion Barriers in Advanced Coating Systems
- Used as diffusion barriers in advanced coating systems, where the low thermal expansion, chemical stability, and high-temperature mechanical integrity of TZM foil prevent interdiffusion between coating layers or between the coating and substrate in multi-layer thermal barrier and wear-resistant coating architectures.
- ✦ Nuclear Engineering Structural Components
- Applied as structural components in nuclear engineering applications, where molybdenum’s low neutron capture cross-section of 2.6 barns and TZM’s superior high-temperature mechanical properties compared to pure molybdenum qualify it for high-neutron-flux structural and shielding roles in reactor environments.
- ✦ Oxidation Resistance, Microstructural Stability and Alloy Optimization Research
- Used in research into TZM oxidation resistance and protection strategies, microstructural stability and carbide precipitate behavior under extended high-temperature service, and alloy composition and processing optimization for enhanced performance in extreme thermal, structural, and electronic technology applications.
Material Properties
| Element | Value |
|---|---|
| Elongation at break( % ) | <20 |
| Modulus of elasticity( GPa ) | 320 |
| Tensile strength( MPa ) | 560-1150 |
| Element | Value |
|---|---|
| Electrical resistivity( µOhmcm ) | 5.3-5.5 |
| Element | Value |
|---|---|
| Maximum use temperature in air( C ) | 400 |
| Melting point( C ) | 2500-2600 |
| Specific heat( J K⁻¹ kg⁻¹ ) | 305@23°C |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 126@23°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 5.3@20-100°C |
| Element | Value |
|---|---|
| Density( gcm⁻³ ) | 10.22 |
Tolerances
| Thickness | <0.01mm | ±25% |
|---|---|---|
| Thickness | 0.01mm - 0.05mm | ±15% |
| Thickness | >0.05mm | ±10% |
| Linear dimension | <100mm | ±1mm |
| Linear dimension | >=100mm | +2 / -1% |