I-alloy yokumelana ne-alloy ye-aloy ibonakala ngokukhethekile ngokulinganisa okushisa okuphansi phakathi kuka-20 no-50 ° C
Kodwa-ke, imithwalo ephakeme eshisayo esezingeni elingelona ox-oxidizing kungenzeka. Lapho isetshenziselwa ukumelana ngokunemba ngezidingo eziphakeme kakhulu, abamelana nalokhu kufanele bazinze ngokucophelela futhi izinga lokushisa lesicelo akufanele lidlule ku-60 ° C. Ukudlula izinga lokushisa eliphakeme emoyeni kungahle kuholele ekunciphisweni kwe-Drift okwenziwe ngezinqubo ze-oxidizing.thus, ukuqina kwesikhathi eside kungathinteka kabi. Ngenxa yalokhu, ukumelana kanye nokulinganisa okushisa kokumelana nogesi kungashintsha kancane. Iphinde isetshenziswe njengezinto eziphansi zezindleko zokubuyiselwa kwezindleko zesiliva esiliva ukukhwela i-hard metal.