Grinding / polishing oxide
| 
 Name 
 | Description & Application | 
|---|---|
| 
 Fused alumina 
 | 
A very hard and tough abrasive, normally used on ferrous metals. | 
| 
 Tripoli 
 | 
A soft abrasive, normally used on non ferrous metals. | 
| 
 Calcined alumina 
 | 
A hard abrasive, many different grades of hardness and particle sizes. Used on all metals. | 
| 
 Silicon carbide 
 | 
Extremely hard abrasive. Used on ferrous metals. | 
