I-iron enyibilikisiweyo engwevu ine-fluidity elungileyo, kwaye umthamo wayo wokuncipha kunye nokuncipha komda kuncinci, kunye nobuntununtunu benotshi buncinci. Ke ngoko, isakhono esihle sokuphosa intsimbi engwevu yamkelwe yinkqubo yokuphosa iqokobhe. Ngaphezu koko, iqokobhe lentsimbi engwevu inegi-ood shock absorption, emalunga namaxesha ali-10 amakhulu kunalawo okusahlelwa kwentsimbi.