The company Sandrin produces knives out of cemented tungsten carbide. This is a common material for machining due to its high wear resistance, strength, stiffness, and hot hardness (resistance to softening at high temperatures and speeds). The material is sometimes called “tungsten carbide” or even just “carbide” as shorthand though it is in fact tungsten carbide plus some amount of cobalt “binder” that holds the carbide together. There are other types of binder and carbide used but cobalt and tungsten carbide is the most common and is also what Sandrin uses so I will not distract you with more details.
It is nice to have a good explanation.
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