Tungsten, molybdenum, tantalum, niobium, zirconium, and titanium are all high-melting-point rare metals. Due to their unique physicochemical properties, they play an indispensable role in modern industry and high-tech fields.

Tungsten: Known for its extremely high melting point (3,422°C) and hardness, it is primarily used for:

Cemented carbide: Used to manufacture cutting tools, drill bits, dies, and more, significantly enhancing machining efficiency and precision.

Heat-resistant materials: used for filaments, high-temperature furnace components, rocket nozzles, and more.

Electronics and Electrical Engineering: Used as semiconductor sputtering targets and electrode materials.

Molybdenum: Possesses excellent high-temperature strength and thermal conductivity, and is widely used for:

Alloy steel additives: Enhance the strength, toughness, and heat resistance of steel, suitable for structural components and high-temperature furnaces.

Electronics industry: Molybdenum thin films are used for electrodes and wiring in semiconductor manufacturing.

Glass and Electrodes: Molybdenum electrodes are resistant to corrosion by molten glass and are commonly used in glass melting furnaces.

Tantalum: Known for its excellent biocompatibility and corrosion resistance, its key applications include:

Electronic Components: Manufacturing high-capacity, miniaturized, and highly stable solid electrolytic capacitors, widely used in computers, medical devices, and aerospace electronic systems.

Medical implants: As “biomimetic metals,” they are used to manufacture artificial joints, bone plates, nerve sutures, and other devices that can achieve long-term compatibility with human tissues.

Chemical equipment: used to manufacture reactors and pipelines resistant to strong acid corrosion.

Niobium: Often occurs in association with tantalum; its primary uses include:

Superconducting Materials: Niobium-titanium alloy is the core material used to manufacture superconducting magnets for magnetic resonance imaging (MRI) equipment.

Alloy strengthening: Added to steel to enhance strength and toughness, used in automotive and aerospace structures.

Electronics and Chemicals: Used in capacitors and corrosion-resistant equipment.

Zirconium: Known for its low thermal neutron capture cross-section and excellent corrosion resistance, its key applications include:

Nuclear Industry: As cladding materials and structural components for nuclear reactors, they effectively control neutron flux.

Chemical equipment: Used to manufacture vessels and pipelines resistant to corrosion by strong acids and strong bases.

Ceramics and Refractories: Zirconia is used in high-temperature ceramics and wear-resistant components.

Titanium: With its high specific strength (strength-to-weight ratio) and excellent corrosion resistance, it is primarily used for:

Aerospace: Manufacturing aircraft engine components, airframe structures, and spacecraft to reduce weight and enhance performance.

Chemical and Ocean Engineering: Used for manufacturing corrosion-resistant reactors, heat exchangers, and ship components.

Medical implants: Similar to tantalum, they are used in artificial joints, bone plates, and other applications, and exhibit excellent biocompatibility.