STEEL Russian patent published in 2009 - IPC C22C38/54 

FIELD: metallurgy.

SUBSTANCE: steel contains carbon, silicon, manganese, aluminium, boron, nickel, chrome, titanium, molybdenum, calcium, copper, zirconium, niobium, lithium, tungsten and iron, at following components relation, wt %: carbon 0.02-0.04, silicon 0.02-0.04, manganese 0.4-0.6, aluminium 0.15-0.25, boron 0.003-0.005, nickel 9.0-10.0, chrome 0.1-0.2, titanium 0.12-0.16, molybdenum 2.0-2.5, calcium 0.005-0.01, copper 1.0-1.4, zirconium 0.05-0.1, niobium 0.16-0.22, lithium 0.0001-0.0002, tungsten 0.4-0.6, iron - the rest.

EFFECT: it is increased steel cold-resistance.

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