CHROMIUM LOW-DOPED CORROSION-RESISTANT AND RADIATION-RESISTANT STEEL Russian patent published in 2008 - IPC C22C38/38 C22C38/34 C22C38/28 

FIELD: metallurgy; ferrous.

SUBSTANCE: said utility invention relates to the field of steel metallurgy. It may be used in the nuclear power industry, in particular, for producing components of nuclear slow-neutron water-cooled reactor cores. The steel contains the following components, % weight: carbon 0.15-0.20; silicon 1.3-1.7; manganese 1.0-2.0; chromium 13.0-15.0; tungsten 0.6-0.8; vanadium 0.1-0.3; titanium 0.1-0.3; cerium and/or yttrium total 0.001-0.100; zirconium 0.1-0.3; nitrogen 0.02-0.15; iron and inevitable impurities being the remaining. The ratio of the total contents of vanadium, zirconium, and titanium the total contents of carbon and nitrogen is 1.5 to 5.0. The total contents of chromium and silicon is 14.3-16.0 % weight. The produced steel has a low level of induced radiation, its faster decay after a neutron exposure while maintaining a high level of embrittlement resistance at 280-350 °C under neutron radiation, and a high level of corrosion resistance in water and steam at the said temperatures, with a service life of up to 30-40 years.

EFFECT: production of steel with low level of induced radiation, maintaining properties under neutron radiation and in high-temperature liquid or steam, with increased service life.

5 cl, 4 tbl, 1 ex