CORROSION-RESISTANT AUSTENITE STEEL FOR FABRICATION OF TUBES Russian patent published in 2010 - IPC C22C38/58 C22C38/50 

FIELD: metallurgy.

SUBSTANCE: invention refers to electrometallurgy of ferrous metals, and namely to fabrication of corrosion-resistant austenite chrome-nickel steels used as structural material for fabrication of tubes. Steel contains carbon, silica, manganese, chrome, nickel, titanium, molybdenum, tungsten, vanadium, copper, aluminium, nitrogen and iron at the following component ratio, wt %: carbon 0.06-0.069, silica 0.3-0.6, manganese 1.0-1.5, chrome of more than 17.0 to 18.0, nickel of more than 9.0 to 9.98, titanium 0.25-0.7, molybdenum 0.08-0.3, tungsten 0.07-0.2, vanadium 0.07-0.2, copper 0.08-0.3, aluminium of more than 0.005 to 0.15, nitrogen 0.007-0.03, iron - the rest.

EFFECT: providing high level of strength and plastic properties of metal at reduction of specific costs.

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