Due to its high melting point, high strength, and corrosion resistance, black tungsten wire has important applications in lighting, electronics, high-temperature industrial applications, medical treatment, welding, photovoltaics, and emerging fields. Although some traditional uses have been impacted by new technologies, its irreplaceable nature in high-temperature, high-precision applications ensures continued demand.

The main difference between black tungsten wire and cleaned tungsten wire lies in surface treatment and appearance: black tungsten wire has a gray-black color due to the presence of graphite emulsion on its surface; cleaned tungsten wire is black tungsten wire that has been alkaline washed or electrolytically polished, resulting in a silvery-white surface with a smooth finish, making it suitable for high-precision and high-temperature environments. Each type has its own advantages depending on the application requirements.

Due to its exceptional physical and chemical properties, black tungsten wire is widely used in lighting, electronics, photovoltaics, and high-temperature industries. As a processed product of the high-melting-point metal tungsten, tungsten wire possesses unique properties that enable it to perform exceptionally well in extreme environments. The following details its key characteristics.

Due to its excellent high-temperature resistance, mechanical strength, and chemical stability, black tungsten wire plays an irreplaceable role in lighting, electronics, high-temperature industries, welding, photovoltaics, medical treatment, and scientific research. The following details the main uses of black tungsten wire.

Due to its unique chemical properties, black tungsten wire is widely used in high-temperature, vacuum, and specific chemical environments. As a high-melting-point transition metal, tungsten is extremely chemically stable, but it can also exhibit some reactivity under certain conditions. The following details the main chemical properties of black tungsten wire.

Due to its unique physical properties, black tungsten wire is widely used in lighting, electronics, and high-temperature industrial applications. Tungsten has the highest melting point of any metal in the periodic table, and its physical properties give black tungsten wire its exceptional performance. The following details its key physical properties.

Due to its high melting point, corrosion resistance, and excellent electrical conductivity, black tungsten wire is widely used in lighting, electronic devices, and high-temperature equipment. Its manufacturing process is complex and precise, involving multiple steps. The main processes are briefly described below.

The tensile strength and ductility of tungsten wire complement each other. Its high strength ensures structural stability, while its moderate ductility enables it to be processed into complex shapes. Tungsten wire's ultra-high tensile strength and controllable ductility make it widely used in lighting, electronics, aerospace, and other fields.

As a key material in modern industry, tungsten wire boasts a wide range of applications due to its high melting point, high hardness, corrosion resistance, electrical and thermal conductivity, and high-temperature stability. It plays an irreplaceable role in lighting, electronics, medical, and new energy fields. Although traditional applications have declined, emerging technologies (such as photovoltaic tungsten wire) are driving continued growth in demand.

Tungsten wires in vacuum tubes primarily serve as hot cathodes (thermal electron emission sources). By emitting thermal electrons through heating, they provide a stable operating current for the vacuum tube, supporting functions such as signal amplification, oscillation, rectification, and display.