What abrasive is , instead of abrasives ?

Abrasive is  a kind of cutting , grinding or polishing materials, which is used in the manufacture of coated abrasives, bonded abrasives. The abrasive has the characteristic of hardness,toughness,inerness,resistance to heat, which has been applied in cutting, grinding or polishing  of different field. This is because, the ability of the grain or particle to penetrate the item being abraded depend to a large extent upon the hardness and shape of the abrasives. In addition , the grain to resist breakdown and dulling under the stree of the grinding operation reflects its toughness. The ideal abrasives grain offers maximum resistance to point wear, yet fractures before serious dulling occurs, thereby satisfying both stock removal and finishing requirements.