I-Ferrosilicon alloy yaziwa nangokuthi i-ferrosilicon. I-Ferrosilicon iyi-silicon nensimbi yakheka i-Fe2Si, i-Fe5Si3, i-FeSi, i-FeSi2 namanye ama-silicides. Ziyizingxenye eziyinhloko ze-ferrosilicon futhi zisetshenziswa kakhulu njengama-deoxidizer noma izithasiselo ze-alloying element. Okuqukethwe kwe-silicon kububanzi obungu-8.0% -95.0% be-alloy yensimbi ne-silicon. I-Ferrosilicon ngokokuqukethwe kwe-silicon okungu-45%, 65%, 75% no-90% nezinye izinhlobo, i-ferrosilicon ngokokuqukethwe kwayo kwe-Si nokungcola kwayo kuhlukaniswe ngamamaki angu-21.
I-Ferrosilicon iyi-ferroalloy esetshenziswa kakhulu futhi iyinto ebalulekile enqubweni yokwenza insimbi. Ukusetshenziswa kwayo okuyinhloko njenge-deoxidizer kanye ne-alloying ejenti ekwenzeni insimbi, ukuqeda umoya-mpilo ngokweqile nesibabule ensimbi ukuze kuthuthukiswe izinga nokusebenza kwensimbi. Ngaphezu kokusetshenziswa kwe-ferrosilicon ekwenzeni insimbi, okunye ukusetshenziswa okubalulekile ukuncibilikisa insimbi ye-magnesium.