9 April 2026

America’s War Machine Runs on Tungsten—and It Could Run Out

Christina Lu

The barrage of munitions that U.S. forces have fired into Iran have laid bare just how reliant the U.S. war machine is on a powerful metal that you’ve likely never heard of: tungsten.

The silvery metal is known for its exceptional density and for having the highest melting point of all pure metals. Those qualities have made it essential for the U.S. defense industry, powering everything from armor-piercing munitions to rocket nozzles.

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