Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by function]
6. abrasive

Anotations

Scope note:

Sharp, hard, artificial abrasive in solid or powdered form composed of silicon carbide. Available in several degrees of coarseness, it is often used for polishing by abrasion. The finest particles are useful for grinding glass.