Kamar yadda kowa ya sani, ana buƙatar ƙananan ma'auni da tsayin daka na zafin jiki don yawancin abubuwan haɗin gwiwa, musamman sassan injin, don jure matsanancin damuwa yayin jirgin.Sabili da haka, Aluminum yana ɗaya daga cikin kayan da suka fi dacewa don sassan sararin samaniya saboda kyawawan kaddarorinsa na juriya, nauyi mai sauƙi, mai sauƙi-machini da ƙananan farashin albarkatun ƙasa.
A wasu lokatai, wasu kayan kuma suna samuwa don mashin ɗin CNC, irin su bakin karfe don sassan injin da ke buƙatar juriya mai zafi, da gami da titanium don ma fi girma ƙarfi da juriya da ake buƙata fiye da aluminum.