FIELD: metallurgy.
SUBSTANCE: invention relates to metallurgy, namely to compositions of high-strength corrosion-resistant steels used for making high-loaded parts and structures in machine building, ship building, aviation and railway transport. Steel contains, wt%: carbon 0.01-0.04, silicon 0.10-0.80, manganese 0.50-1.50, chromium 14.0-16.0, nickel 3.0-5.0, nitrogen 0.1-0.2, copper from more than 0.5 to 2.5, vanadium 0.02-0.20, calcium from over 0.005 to 0.030, iron and impurities are balance. Carbon-to-nitrogen ratio makes 0.2 or less.
EFFECT: steel has high yield point and ultimate strength at maintaining high ductility and impact strength.
1 cl, 2 tbl
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