Makhalidwe aliwonse omwe ali m'mafakitale ali ndi mbiri yayitali, koma lero tikulankhula za mbiri yakale yaAlloy Steel Expeng.
Kuchokera pa nkhondo yachiwiri yapadziko lonse mpaka 1960s,Alloy Steel Expengmakamaka nthawi yayitali yakutukuka kwa chitsulo cholimba komanso chitsulo chachikulu. Chifukwa cha zosowa za mafakitale a ndege komanso kukula kwa ukadaulo wa Rocket, zolimbitsa mphamvu kwambiri ndi zolimbitsa thupi zolimbitsa thupi, monga chitsulo chochepa kwambiri, Ndiwo oyimira zitsulo. Alloy chitsulo chinayamba kukula kolowera kwa oyera, molondola kwambiri ndi ultra-yotsika kaboni. Kuyenda mopanda zitsulo ndi zinthu zoyera kumawonekeranso.Nen Steel Makanema monga chitsulo chosapanga dzimbiri.