HEAT-RESISTANT AND RADIATION-RESISTANT STEEL Russian patent published in 2017 - IPC C22C38/60 C22C38/52 

FIELD: metallurgy.

SUBSTANCE: steel contains, wt %: carbon 0.10-0.20, silicon 0.02-0.40, manganese 0.02-0.6, chrome 2.0-2.5, nickel 1.25-2.0, molybdenum 0.35-0.7, vanadium 0.10-0.15, copper 0.005-0.03, cobalt 0.001-0.03, sulfur 0.0005-0.003; phosphorus 0.0005-0.004; arsenic 0.001-0.004; antimony 0.001-0.004; stannum 0.001-0.004; hydrogen 0.00001-0.00012, aluminium 0.015-0.035, nitrogen 0.0001-0.008, oxygen 0.0001-0.0030, bismuth 0.001-0.004, lead 0.001-0.004, iron-the rest.

EFFECT: improved service and technological properties of steel, yield point and strength limit, provision of guaranteed low values of critical brittleness temperature, increased resistance to embrittlement at thermal action and neutron irradiation.

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