CORROSION-RESISTANT STEEL Russian patent published in 2007 - IPC C22C38/50 

FIELD: metallurgy; composition of corrosion-resistant steels used in shipbuilding.

SUBSTANCE: proposed steel contains the following constituents, mass-%: carbon, 0.15-0.25; silicon, 0.1-0.3; manganese, 0.6-1.0; chromium, 22.0-26.0; nickel, 4.0-5.0; molybdenum, 2.0-3.0; nitrogen, 0.02-0.06; copper, 0.1-0.3; titanium, 0.75-1.25; vanadium, 0.3-0.5; zirconium, 1.0-1.5; germanium, 0.003-0.008; the remainder being iron.

EFFECT: enhanced corrosion resistance of steel; increased service life of articles made from this steel.

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