FIELD: metallurgy.
SUBSTANCE: sheet is made of steel of the chemical composition containing by wt %: C - not more than 0.0050, Si - more than 1.5 and not more than 5.0, Mn - not more than 0.10, solub. Al - no more than 0.0050, P - more than 0.040 and no more than 0.2, S - no more than 0.0050, N - no more than 0.0040, Ca - 0.001-0.01, Fe and inevitable impurities - the rest. The composition ratio of CaO in the inclusions, based on the oxides existing in the steel sheet, is not less than 0.4 and/or the composition ratio of Al2O3 in the inclusions, based on the oxides existing in the steel sheet, is not less than 0.3.
EFFECT: sheet has a high magnetic flux density and low iron losses at the industrial frequency and in the high frequency range.
4 cl, 1 dwg, 2 tbl, 2 ex
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