Intsimbi ebuleweyintsimbi ethe yakhutshwa yityhefu ngokupheleleyo ngokudityaniswa kwe-arhente phambi kokuba yenze ukuba kungabikho tshintsho lwerhasi ngexesha lokuqina. Ibonakaliswa yinqanaba eliphezulu le-homogeneity yeekhemikhali kunye nenkululeko kwi-porosities yegesi.

Intsimbi ebulewe ngokwesiqingatha ubukhulu becala iyintsimbi edityanisiweyo, kodwa icarbon monoxide ishiya i-bloodhole yohlobo lwe-porosity esasazwe kuyo yonke ingot. I-porosity iphelisa umbhobho ofunyenwe kwintsimbi ebuleweyo kwaye yandisa isivuno malunga ne-90% ngobunzima. I-Semi-killed steel isetyenziswa ngokuqhelekileyo kwintsimbi yesakhiwo kunye nomxholo wekhabhoni phakathi kwe-0.15 kunye ne-0.25% yekhabhoni, kuba iqengqiwe, evala i-porosity.

Intsimbi enerim, eyaziwa ngokuba yintsimbi esemgangathweni yokuzoba, ayinayo i-agent encinci ye-deoxidizing eyongezwe kuyo ngexesha lokuphosa elibangela ukuba i-carbon monoxide ivele ngokukhawuleza kwi-ingot. Oku kubangela imingxunya emincinci kumphezulu ethi kamva ivalwe kwinkqubo yokuqengqeleka eshushu. Uninzi lwensimbi ene-rimmed lunomxholo wekhabhoni ongaphantsi kwe-0.25%, umxholo we-manganese ongaphantsi kwe-0.6%, kwaye awuxutywanga ne-aluminium, i-silicon, kunye ne-titanium.