CORROSION-RESISTANT AUSTENITE STEEL Russian patent published in 2015 - IPC C22C38/58 C22C38/50 

FIELD: metallurgy.

SUBSTANCE: invention relates to the metallurgy, namely to development of the composition of alloyed corrosion-resistant austenite steel for nuclear power plants. Steel contains the following component in wt %: carbon 0.03-0.08, silicon 0.4-0.6, magnesium 1.0-1.8, chrome 17.5-19, nickel 8.0-9.5, niobium 0.05-0.07, vanadium 0.05-0.07, titanium 0.08-0.12, sulphur ≤ 0.015, phosphorus ≤ 0.015, nitrogen from 0.04 to below 0.07, calcium 0.004-0.015, cerium 0.005-0.05, iron - rest. For components of steel the following ration is met: (Ti+0.5Nb+CV)/(C+N) ≥ 1.0.

EFFECT: improved short-term and long-term mechanical properties and resistance against pitting corrosion in corrosion liquids.

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