Unmounted Tool Plates, Sticks, and Tips of Sintered Metal Carbides or Cermets

An insert that has been permanently brazed into a tool body, or assembled into a complete indexable tool holder ready for machine use, may be classified as a complete cutting tool rather than an unmounted insert. The unmounted condition — loose inserts, sticks, or plates not yet incorporated into a tool — is the key qualifier for this category.

Both sintered metal carbides (typically tungsten carbide with a metallic binder) and cermets (ceramic-metallic composites, often titanium carbonitride-based) are explicitly included in this category, so the distinction does not affect classification at this level. However, the material difference matters commercially: cermets generally offer higher heat resistance and are preferred for finishing cuts on steel, while tungsten carbide grades are more versatile across materials.