What is the Filament of the Bulb made of?

By Mandeep Kumar|Updated : July 18th, 2022

Tungsten is used for making the filament of a bulb. The filament of a bulb is made up of tungsten because its melting point is very high which is 3,410 °C (6,152 °F).

Answer: The filament of a bulb is made up of tungsten.

Tungsten is an element in the modern periodic table having atomic number 74. It is represented by the symbol ‘W’. China has the largest reserve of Tungsten. Its amount in the earth’s crust is estimated at about 1.5 grams per ton of rock. It does not occur as a free metal. It is a steel-grey metal that is brittle, has high tensile strength, has the lowest coefficient of thermal expansion of any pure metal, etc. Pure tungsten is malleable in nature and can be worked on easily.

Tungsten does not react with air or oxygen at room temperature and with water. It is mainly obtained from the minerals scheelite and wolframite.

Summary:

What is the Filament of the Bulb made of?

The filament of a bulb is made up of tungsten. It has various industrial applications such as the production of hard materials based on tungsten carbide, making rings of sintered tungsten carbide, etc.

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