Material Introduction
MHC Molybdenum Alloy
Material Introduction
The main component of MHC molybdenum alloys is Mo-(0.5-1.3)%Hf-(0.05-0.12)%C; that is, Hf and C elements are added to pure molybdenum. The recrystallization temperature and creep properties of molybdenum alloys are thus significantly improved by solid solution strengthening and second phase particle strengthening.
Specifications and Performance
|
Material |
Bar (mm) |
Plate (mm) |
|
MHC |
Φ 1~150 |
0.5~50 |
|
Material |
Tensile strength at room temperature/MPa |
Elongation at room temperature |
Tensile strength at 1000°C |
1000℃ elongation |
|
MHC molybdenum alloy |
800 |
20% |
500 |
20% |
|
Notes |
30mm diameter bar |
|||
Fabrication Process
By means of molybdenum alloy powder preparation, isostatic pressing, high-temperature sintering, and thermal deformation processing, MHC molybdenum alloys have a density which is close to the theoretical density, thus ensuring optimal high-temperature performance.
Advantage
Due to the solid solution strengthening and dispersion strengthening of the alloying element Hf, MHC molybdenum alloys greatly improve the high-temperature mechanical properties and recrystallization temperature of pure molybdenum. Due to the uniform distribution of ultrafine carbides, the material still exhibits excellent heat resistance and creep resistance at a temperature of 1,550°C, and the recommended maximum operating temperature is also 150°C higher than TZM. For example, when used in extrusion dies, it is able to withstand extreme thermal and mechanical loads. MHC materials are therefore recommended for metal forming applications.
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