Okokuqala, le mveliso ibonisa ukuqina okuphezulu: Xa kuthelekiswa namazinyo ebhakethi aqhelekileyo, la mazinyo aqiniswe kakhulu, nto leyo eyenza ukuba angakwazi ukwaphuka xa ehlaselwa.
Okwesibini, ibonakalisa ukumelana nokuguguleka okuphezulu: Amazinyo eebhakethi zentsimbi ye-alloy enziwe ngentsimbi ye-alloy enekhabhoni ephantsi, nto leyo ebangela ukumelana nokuguguleka okuphezulu, okuphindwe kane ukuya kahlanu kunamazinyo eebhakethi zentsimbi ye-manganese esemgangathweni.
