Rakidhkan dharka ayaa leh qaab aluminium-magnesium aluminium ah oo aad u sarreeya oo leh daahan bir ah oo heer-gaar ah oo deegaanka saaxiibtinimo leh, taas oo ka dhigaysa kaliya maaha mid u adkaysata iyo miridhku u adkaysan karo laakiin sidoo kale badbaado iyo saaxiibtinimo leh.