DIE STEEL Russian patent published in 2008 - IPC C22C38/54 

FIELD: metallurgy, iron and steel industry.

SUBSTANCE: invention refers to iron and steel industry, particularly to compositions of steel used for production of a tool of a hot deforming. Steel contains carbon, silicon, manganese, chromium, nickel, molybdenum, vanadium, calcium, niobium, boron, and iron at a following ratio of elements, mas,%: carbon 0.4-0.8; silicon 0.4-0.8; manganese 0.8-1.2, chromium 6.0-8.0; nickel 1.0-1.5; molybdenum 4.0-6.0, vanadium 0.08-0.16, calcium 0.05-0.1, niobium 5.0-6.0, boron 0.1-0.2, iron - the rest.

EFFECT: production of die steel of upgraded strength.

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