STEEL Russian patent published in 2008 - IPC C22C38/06 

FIELD: metallurgy, iron and steel industry.

SUBSTANCE: invention refers to iron and steel industry, particularly to composition of steel used in machine building. Steel contains carbon, silicon, manganese, boron, vanadium, aluminium, magnesium, cerium, titanium, copper, phosphorus and iron at a following ratio of elements, mas.%: carbon 0.3-0.5; silicon 0.2-0.6; manganese 0.4-0.8; boron 0.1-0.3; vanadium 0.1-0.2; aluminium 0.1-0.2; magnesium 0.05-0.1; cerium 0.1-0.3; phosphorus 0.1-0.2; titanium 0.5-1.0; copper 2.0-3.0, iron - the rest.

EFFECT: producing steel with upgraded hardenability.

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