A trademark for a hard composite material made from tungsten carbide and cobalt, used for drill bits and cutting tools.
Portmanteau of 'carbide' + 'alloy,' created as a brand name in the early 20th century. The material combines the hardness of tungsten carbide with cobalt's binding properties. Originally a trademarked term that became somewhat genericized in industrial contexts.
Carboloy sounds like a superhero material because it basically is—tungsten carbide is so hard that a carboloy drill bit can bore through steel that would destroy regular drills, making it invaluable in manufacturing and mining!
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