FIELD: metallurgy.
SUBSTANCE: plate is made from steel containing the following, wt %: C 0.05-0.20, Si 0.10 or less, Mn 0.2-1.7, P 0.10 or less, S 0.10 or less, Al 0.01-0.10, N 0.010 or less and Pe and impurities are the rest provided that [% Mn]/[% C]≥2.0, where [% M] represents content (wt %) of M element in steel, which has tensile strength (TS) at least of 390 MPa, relative elongation (EE) at least of 30% and elongation corresponding to yield point, (YP-EL) after ageing with constant increase in steel plate temperature, which does not exceed 1.0%.
EFFECT: increased ductility of steel plate.
12 cl, 3 dwg, 3 tbl
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