HYDROGEN RESISTANT STEEL Russian patent published in 2008 - IPC C22C38/48 

FIELD: metallurgy, iron and steel industry.

SUBSTANCE: invention refers to metallurgy and can be used at producing of synthetic ammonia, at hydrogenation of coals, at producing artificial petrol and in other processes of chemical and oil and gas industry. Steel contains, mas.%: carbon 0.03-0.07; silicon 0.15-0.3; manganese 0.3-0.5; chromium 19.0-21.0; nickel 40.0-44.0; molybdenum 2.5-3.5; niobium 0.2-0.4; thorium dioxide 0.05-0.1; calcium 0.003-0.007; vanadium 0.15-0.3; tungsten 0.1-0.2; iron - the rest.

EFFECT: producing steel of upgraded hydrogen resistance.

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