Tungsten
Basic properties of tungsten. Tungsten, chemical symbol W, atomic number 74, is a transition metal. At normal temperatures and pressures, tungsten is a silver-white heavy metal that is hard and tough. Its density is as high as 19.25g/cm³, which is more than twice that of iron. At the same time, its melting point and boiling point are both very high, 3422°C and 5927°C respectively, so it has unique value in many high-temperature applications.
Metal tungsten (chemical symbol W) is a rare metal with an extremely high melting point. It has important applications in many industrial fields because of its unique physical and chemical properties. Here are some details about tungsten metal:
Physical properties:
High melting point: The melting point of tungsten metal is as high as 3422°C, which is the highest among all pure metals.
Density: The density of metallic tungsten is about 19.25 g/cm³, which is about twice heavier than iron.
Hardness: Among metals, tungsten has the highest hardness and has good wear resistance.
Color: Pure metallic tungsten is silvery white with metallic luster.
Chemical Properties:
Oxidation resistance: At high temperatures, an oxide film will form on the surface of tungsten metal, but at room temperature, it is very stable in the air.
Reactivity: Metal tungsten has relatively low chemical reactivity and does not react with most acids, but will react with chlorine, fluorine, etc. at high temperatures.
The main purpose:
Lighting industry: Due to its high melting point, tungsten metal is widely used to make filaments for incandescent lamps.
Electronics industry: used in the manufacturing of electronic products such as electron tubes, X-ray tubes, and cathode ray tubes.
Military field: Due to its high density and hardness, tungsten metal is used to make armor-piercing projectiles, bulletproof materials, etc.
Industrial processing: used as cutting tools, abrasives, welding electrodes, etc.
Scientific research: In fields such as materials science and astronomy, tungsten is used as an experimental material and for spectroscopic analysis.
Physical properties:
High melting point: The melting point of tungsten metal is as high as 3422°C, which is the highest among all pure metals.
Density: The density of metallic tungsten is about 19.25 g/cm³, which is about twice heavier than iron.
Hardness: Among metals, tungsten has the highest hardness and has good wear resistance.
Color: Pure metallic tungsten is silvery white with metallic luster.
Chemical Properties:
Oxidation resistance: At high temperatures, an oxide film will form on the surface of tungsten metal, but at room temperature, it is very stable in the air.
Reactivity: Metal tungsten has relatively low chemical reactivity and does not react with most acids, but will react with chlorine, fluorine, etc. at high temperatures.
The main purpose:
Lighting industry: Due to its high melting point, tungsten metal is widely used to make filaments for incandescent lamps.
Electronics industry: used in the manufacturing of electronic products such as electron tubes, X-ray tubes, and cathode ray tubes.
Military field: Due to its high density and hardness, tungsten metal is used to make armor-piercing projectiles, bulletproof materials, etc.
Industrial processing: used as cutting tools, abrasives, welding electrodes, etc.
Scientific research: In fields such as materials science and astronomy, tungsten is used as an experimental material and for spectroscopic analysis.
