The company I worked for made tungsten nozzles, they had to be welded using atomic hydrogen welding. One day a bottle of hydrogen shows up and receiving rejected it, we had the supplier label it protium and it went right through.
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Cake day: November 12th, 2023
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Rocket nozzles are commonly made of tungsten, there are more than a few manufacturers in the US. Drill bits can be made of tungsten carbide. Armor piercing weapons use tungsten too. All of these have industries in the US.
https://drillbitsusa.com/product-category/solid-carbide-drill-bits/
You don’t use solid carbide drill bits with a hand drill but with mills and cnc machines.
https://www.mcmaster.com/product/3723A51