FIELD: metallurgy.
SUBSTANCE: it is implemented steel making, containing, wt %: carbon 0.045-0.12, silicon not more than 0.50, manganese 0.35-1.15, aluminium 0.01-0.09, nitrogen not more than 0.010, niobium and/or titanium - 0.01-0.08, iron and unavoidable admixtures - the rest, pouring, hot rolling with finishing temperature in the range 830-880°C, cooling by water, winding of strips into coils in the range 510-640°C. Steel additionally contains, wt %: vanadium 0.01-0.08, calcium 0.0005-0.010, herewith total content of niobium, titanium and vanadium mustn't exceed 0.117 wt %.
EFFECT: strength properties increasing of steel at saving of formability and receiving of hot-rolled mill products of required strength grade.
7 cl, 6 tbl
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