Molybdenum
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Molybdenum is a refractory metal with a high melting point, high strength, and excellent corrosion resistance, and it plays an important role in industry.
Product name：
Inconel alloy
Material：
inconel800
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Tianjin
Surface treatment：
Pickled/bright/black etc.
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Keyword：
Molybdenum
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Details description
Basic Properties
Element Symbol: Mo
Atomic Number: 42
Relative Atomic Mass: 95.94
Melting Point: 2623℃ (second only to tungsten and tantalum, one of the metals with the highest melting point in nature)
Boiling Point: 5560℃
Density: 10.28 g/cm³ (at room temperature)
Appearance: Pure molybdenum has a silvery-white metallic luster, is hard and ductile.
Main Performance Characteristics
High Temperature Performance
Molybdenum's high melting point allows it to maintain stable mechanical properties at high temperatures. Even above 1000℃, its strength is significantly higher than that of most metallic materials, making it suitable for high-temperature structural components.
Mechanical Properties
Tensile strength at room temperature is approximately 550-700 MPa, which can be increased to over 1000 MPa after processing and strengthening.
Good ductility, it can be cold-processed by rolling, forging, and drawing, and can also be hot-processed into complex shapes.
Low low-temperature brittleness, it can maintain a certain toughness even at sub-zero temperatures.
Corrosion Resistance
Pure molybdenum has good corrosion resistance to air, water, dilute acids (such as hydrochloric acid and sulfuric acid), and alkaline solutions at room temperature, but it is easily corroded by strong oxidizing media such as nitric acid and aqua regia; at high temperatures, it will oxidize to form MoO₃, so its oxidation resistance needs to be improved through coatings (such as silicide coatings).
Electrical and Thermal Properties
Electrical conductivity is about 35% of copper, and it is a good conductive material.
High thermal conductivity (138 W/(m・K)), and low thermal expansion coefficient (approximately 5.1×10⁻⁶/℃), suitable for thermal management components.
Nuclear Properties
Molybdenum has a small neutron absorption cross-section and good radiation resistance, making it an important material in the nuclear industry.
Main Product Forms
Molybdenum products are diverse and can be processed according to application needs into:
Pure molybdenum products: molybdenum plates, molybdenum sheets, molybdenum rods, molybdenum wires, molybdenum tubes, molybdenum foils, molybdenum crucibles, etc.
Molybdenum alloys: Alloys are formed by adding elements such as titanium, zirconium, and niobium (such as TZM molybdenum alloy, Mo-La₂O₃ alloy), further improving high-temperature strength and recrystallization temperature.
Molybdenum compounds: Molybdenum trioxide (MoO₃), ammonium molybdate, sodium molybdate, etc., used in chemical and agricultural fields.
Application Fields
Iron and Steel Industry
Molybdenum is an important alloying element used in the production of high-strength low-alloy steel, stainless steel, tool steel, etc., which can improve the strength, toughness, and wear resistance of steel, and is widely used in automobiles, machinery manufacturing, and other fields.
Aerospace and Defense
Using its high-temperature resistance characteristics, it is used to manufacture rocket engine nozzles, spacecraft heat shields, missile components, etc.; molybdenum alloys are also used in high-temperature structural components of aero-engines.
Electronics and Energy
Molybdenum wire is used in electric discharge machining, filament supports, and vacuum furnace heating elements.
Molybdenum plates/foils are used in the heat dissipation layer of semiconductor chips and electrodes of thin-film solar cells.
Used as structural materials and target materials in nuclear reactors.
Chemical and Metallurgical Industries
Molybdenum crucibles and boats are used for high-temperature melting of materials such as sapphire and quartz.
Molybdenum compounds (such as ammonium molybdate) are used as catalysts in petrochemical hydrodesulfurization, nitric acid production, and other chemical processes.
Medical Field
Molybdenum isotopes (such as Mo-99) can be used to produce the medical radioisotope Tc-99m, used in tumor diagnosis and imaging.
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