NON-TEXTURED ELECTROTECHNICAL STEEL SHEET AND METHOD OF ITS MANUFACTURING Russian patent published in 2020 - IPC C22C38/60 C21D8/12 H01F1/16 

FIELD: metallurgy.

SUBSTANCE: invention relates to metallurgy, namely to non-textured electrical steel sheet used as material of iron cores of engines. Steel has chemical composition containing, wt%: C: not more than 0.0050, Si: from 3.2 to 4.5, Mn: 0.1 to 2.0, P: not more than 0.020, S: not more than 0.0050, Al: from 0.4 to 2.0, N: not more than 0.0050, Ti: not more than 0.0030, As: not more than 0.0030, Sn+Sb: from 0.005 to 0.10, O: not more than 0.0050, one or two elements selected from Mo and W, at content level in range from 0.0020 to 0.10 in total, rest is Fe and unavoidable impurities.

EFFECT: improved rolling ability in cold state without deterioration of magnetic properties and reduced efficiency.

8 cl, 4 dwg, 3 tbl, 2 ex