The material is not really what might thought of as conventionally "ultra-hard". In fact, it's deformability is one of it's features. It is billed as practical

The material is not really what might thought of as conventionally "ultra-hard". In fact, it's deformability is one of it's features. It is billed as practically uncuttable by several different tools owning in part to the material's ability to create resonance feedback to destroy the attacking tools.