Used as a filament in incandescent light bulbs due to its high melting point and durability. Commonly added to steel to form tungsten steel, which is used in cutting tools and wear-resistant parts. Employed in aerospace and defense industries for high-density alloys in counterweights, radiation shielding, and armor-piercing projectiles. Applied in electronics as a conductive material in semiconductors and microchips. Also used in welding electrodes, especially in TIG (tungsten inert gas) welding, where pure tungsten or tungsten alloys carry the electric arc.