STEEL Russian patent published in 2007 - IPC C22C38/38 

FIELD: ferrous metallurgy.

SUBSTANCE: invention proposes steel comprising the following components, wt.-%: carbon, 0.1-0.3; silicon, 0.5-1.0; manganese, 10.0-15.0; aluminum, 0.03-0.05; titanium, 0.2-0.4; chrome, 1.0-2.0; calcium, 0.003-0.005; hafnium, 1.0-2.0; molybdenum, 2.0-3.0; cobalt, 3.0-4.0, and iron, the balance. Invention provides enhancing fatigue strength of steel under conditions of increased temperatures. Invention can be used in energetic machine engineering.

EFFECT: improved and valuable technical property of steel.

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