Manganese
Txog 0.25% rau 0.80%. Kev daws teeb meem; tshem tawm ntawm FeO, txo cov brittleness ntawm cov hlau; thiab synthesis ntawm MnS nrog leej faj, yuav txo tau qhov teeb meem los ntawm leej faj. Pab tau.
Silicon
Hais txog 0.10% ~ 0.40%, khoom tsim kom muaj zog; Ntxiv nrog rau qhov teebmeem phom ntawm FeO rau steel hlau zoo.
Sulfur
FeS thiab Fe tsim kom muaj qhov nruab nrab eutectic point (melting point ntawm 985 ° C), uas ua rau cov hlau ua nkig thiab tawg thaum kub-ua haujlwm ntawm 1000 txog 1250 ° C. teeb meem.
Phosphorus
Muaj zog thiab ua kom zuaj siab, tab sis qhov yas thiab qhov muaj zog txo, "txias thiab nkig." teeb meem.
