Molybdenum fasteners
In industrial manufacturing, nuts, bolts and gaskets are the most fundamental and common types of connection components. However, in certain extreme environments, ordinary steel or stainless steel fasteners will rapidly soften, melt, oxidize or even fail, resulting in disastrous consequences. At such times, a "hard core" material capable of withstanding extreme environments is needed - molybdenum. The molybdenum nuts, bolts and gaskets, washer made of molybdenum are precisely the special fastening solutions designed for harsh conditions such as high temperatures, high pressures and strong corrosiveness.
To understand the application of molybdenum fasteners, one must first understand the unique properties of molybdenum metal. The melting point of molybdenum is as high as 2620°C, far exceeding that of most steels (about 1500°C). This is the primary reason for its application in high-temperature environments. At temperatures above 1000°C, molybdenum still maintains extremely high strength and hardness, has excellent creep resistance, and does not deform due to prolonged stress. The thermal expansion coefficient of molybdenum is similar to that of many special glasses and ceramics, which enables it to maintain good sealing properties when connected with these materials, and will not rupture due to thermal expansion and contraction. Its good thermal conductivity and electrical conductivity make molybdenum fasteners beneficial for heat management and electrical current transmission. It also has good resistance to certain molten metals and acids.
It is precisely these combined advantages that determine the indispensability of molybdenum nuts, molybdenum bolts and molybdenum gaskets in the following key areas. The core application fields of molybdenum fasteners. The most classic and widespread application fields of molybdenum nuts, molybdenum bolts and molybdenum gaskets in high-temperature vacuum furnaces and heat treatment industries. Its application scenarios include: vacuum sintering furnaces, high-temperature brazing furnaces, single crystal growth furnaces (such as sapphire growth furnaces), carbonization treatment furnaces, etc.
Inside these devices, the temperature often exceeds 1200°C and requires maintaining a high vacuum or an inert atmosphere. Ordinary steel would volatilize and contaminate the internal environment of the furnace; stainless steel would experience a significant drop in strength. Molybdenum fasteners are used for: fixing the heating elements and insulation screens. As molybdenum gaskets, they are used for high-temperature sealing and connections.
Electrical lighting and vacuum electronics industry
The manufacturing of incandescent lamps, halogen lamps, high-power gas discharge lamps, as well as vacuum electronic devices such as microwave tubes and magnetron tubes all rely on molybdenum fasteners. The application scenarios include: filament supports, electrode fixation, core column connections, etc. Molybdenum bolts and molybdenum nuts are used to precisely fix the internal filament, electrodes, and other key components. Due to the matching thermal expansion coefficients between molybdenum and quartz glass, it can be perfectly encapsulated in the glass to form a true vacuum seal without cracking.
Semiconductor and Photovoltaic Manufacturing
The manufacturing process of semiconductor chips and solar cell wafers involves multiple steps of high-temperature diffusion, annealing, and chemical vapor deposition (CVD). CVD equipment, the supporting devices within the diffusion furnace tubes (such as boats), wafer holders. Precision fixtures using molybdenum bolts and molybdenum nuts are used to assemble and fix these fixtures that hold the wafers. These fixtures must withstand repeated thermal cycles (from room temperature to above 1000°C) without deformation, ensuring precise wafer positioning and avoiding contamination of the chips due to the release of impurities from the fasteners.
Aerospace and Defense Technology
In the cutting-edge fields such as rockets, missiles, and aircraft engines, the requirements for material properties are extremely strict. The application scenarios include: certain high-temperature parts of the engine, rocket nozzle structural components, and the fixation of high-temperature sensors. Under short but extremely high-temperature conditions (up to over 2000°C), molybdenum fasteners can provide temporary but crucial structural connection support. Molybdenum gaskets are also used in high-temperature sealing situations.
Glass processing and molten metal handling
Application scenarios: Melting equipment and mold connections for special glasses (such as optical glasses, fiberglass); Containers and components for molten metals like zinc, aluminum, and copper. By taking advantage of its similar thermal expansion coefficient to glass, it is used for assembling and fixing glass molds. In the molten metal environment, its excellent corrosion resistance can resist erosion.
Molybdenum nuts, bolts and gaskets are by no means ordinary industrial standard components. They are the "special forces" designed for cutting-edge technologies and extreme working conditions. From the electric lights that illuminate our lives, to the high-end equipment for manufacturing chips, and even to the aerospace engines for exploring the universe, in these unseen "high-temperature battlefields", it is precisely these "hard-core" fasteners made of molybdenum that silently maintain the stability and safety of the systems, and are an indispensable key link in modern industry.
Molybdenum nut is in demand in various parts of the world, such as: USA, Canada, Chile, Brazil, Argentina, Colombia, Germany, France, United Kingdom, Italy, Sweden, Austria, Netherlands, Belgium, Switzerland, Spain, Czech Republic, Poland.
Mosten Alloy can produce and supply molybdenum electrode, molybdenum strip, molybdenum sheet, molybdenum pellet, molybdenum block, molybdenum tube, molybdenum rod, molybdenum wire, molybdenum processing workpiece according to customer demand.
