FIELD: metallurgy.
SUBSTANCE: invention relates to metallurgy, namely to non-oriented silicon steel sheet used as material for steel cores of electric motors, compressors etc. Steel has the following chemical composition, wt%: C≤0.005, Si 0.1–1.6, Mn 0.1–0.5, P≤0.2, S≤0.004, Al≤0.003, N≤0.005, Nb≤0.004, V≤0.004 and Ti≤0.003, balance is Fe and unavoidable impurities. Content of steel elements meets the following ratios: 120≤[Mn]/[S]≤160 and [Nb]/93+[V]/51+[Ti]/48+[Al]/27≤[C]/12+[N]/14.
EFFECT: providing high magnetic induction B50, making up ≥1,7 Tl, and low losses in iron P15/50, making up ≤7 W/kg.
6 cl, 4 dwg, 2 tbl
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