HOT-ROLLED STEEL Russian patent published in 2009 - IPC C22C38/50 

FIELD: metallurgy.

SUBSTANCE: invention relates to metallurgy field, particularly it relates to compositions of steels, which can be used for receiving of sheet products. Hot-rolled steel contains carbon, silicon, manganese, chrome, nickel, copper, aluminium, titanium, argon, vanadium, silver, strontium and iron, with following ratio of components, wt %; carbon 0.1 - 0.2, silicon 0.1 - 0.2, manganese 0.7 - 1.3, chrome 0.7 - 1.3, nickel 1.7 - 2.3, copper 1.7 - 2.3, aluminium 0.1 - 0.2, titanium 0.1 - 0.2, argon 0.002 - 0.004, vanadium 0.3 - 0.4, silver 0.05 - 0.1, strontium 0.001 - 0.002, iron is the rest.

EFFECT: increasing of steel mechanical properties.

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