STEEL Russian patent published in 2007 - IPC C22C38/50 

FIELD: ferrous metallurgy.

SUBSTANCE: invention relates to steel compositions used in machine engineering. Proposed steel comprises the following components, wt.-%: carbon, 0.2-0.3; silicon, 0.2-0.3; manganese, 0.6 or 0.8, or 1.0; chrome, 0.3-0.5; nickel, 2.0-3.0; copper, 0.2-0.4; vanadium, 0.6-0.8; titanium, 0.2-0.3; nitrogen, 0.01-0.03; molybdenum, 0.8-1.2; calcium, 0.01-0.03; zirconium, 0.8-1.2; lanthanum, 0.15-0.3, and iron, the balance. Invention provides enhancing strength of steel.

EFFECT: improved and valuable technical property of steel.

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