00:00This projectile is made of the most heat-resistant metal in the world.
00:03Not even lava can melt it.
00:05Its melting point is around 3,500 degrees Celsius,
00:09a record among all metals on Earth.
00:11For comparison, steel melts at 1,500 degrees Celsius
00:15and aluminum at 700 degrees Celsius.
00:18Meet tungsten.
00:20This metal is twice as heavy as lead and nearly as dense as gold or uranium.
00:24In its pure form, tungsten is hard but brittle.
00:27However, in alloys, it becomes the foundation for incredibly tough tools.
00:31The most famous alloy is called Pobidit, a mix of tungsten and cobalt.
00:36It's not melted but compressed under high pressure and sintered like a giant pill.
00:41Its hardness is close to that of diamond.
00:43That's why Pobidit is used in drill bits, cutting tools, and armor-piercing rounds.
00:48It also resists radiation and won't soften from overheating,
00:51which is why it's used in jet engine nozzles and shielding in nuclear reactors.
00:55This metal is a true hero of engineering.
00:58And you probably didn't know tungsten is also used in light bulb filaments?
Comments