Carbon-graphite bụ ihe na-eme mmanụ onwe ya, ọ bụkwa ihe mkpuchi ihu nwere ike iji mgbanaka mating nke ihe ndị siri ike dị ka silicon carbide, alumina, ma ọ bụ tungsten carbide.Carbon anyị nwere njiri mara mma yana nguzogide kemịkalụ sara mbara.Corrodents siri ike gụnyere hydrofluoric na acid nitric, carbongrades pụrụ iche dị.