STEEL Russian patent published in 2009 - IPC C22C38/60 

FIELD: metallurgy.

SUBSTANCE: invention concerns metallurgy field. Particularly it concerns steel compositions, used in automobile production and shipbuilding. Steel contains carbon, silicon, manganese, chrome, titanium, aluminum, nitrogen, boron, vanadium, zirconium, copper, rhenium, tellurium, beryllium and iron, at following ratio of components, wt %: carbon 0.15 - 0.25, silicon 1.0 - 1.4, manganese 0.6 - 1.0, chrome 0.4 - 0.8, titanium 0.1 - 0.2, aluminium 0.15 - 0.25, nitrogen 0.01 - 0.02, boron 0.03 - 0.05, vanadium 0.55 - 0.6, zirconium 0.26 - 0.4, copper 1.1 - 1.3, rhenium 0.26 - 0.4, tellurium 0.004 - 0.0046, beryllium 0.01 - 0.02, iron is the rest.

EFFECT: steel hardening.

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