CORROSION-RESISTANT AUSTENITIC STEEL Russian patent published in 2009 - IPC C22C38/58 

FIELD: metallurgy.

SUBSTANCE: invention concerns metallurgy field, particularly it relates to corrosion-resistant austenitic steel content used in power machine building, particularly at manufacturing of sleeve tubes of generators. Steel contains carbon, silicon, manganese, chromium, nickel, nitrogen, vanadium, zirconium, iron and admixtures at a following ratio, wt %: carbon from more than 0,15 up to 0.20, silicon 0.2 - 1.0, manganese from 15.0 up to less than 16.0, chrome 14.0 - 16.0, nickel 0.8 - 1.2, nitrogen 0.30 - 0.45, vanadium 0.2 - 0.4, zirconium 0.02 - 0.04, iron and admixtures are the rest. Steel content fills following compositions, wt %: C=(0.4÷0.5) N and V = (0.13÷0.17)/(N+C), where C, N and V - content in steel of carbon, nitrogen and vanadium in wt % correspondingly.

EFFECT: increasing of steel yield point after aging process at optimal combination of plasticity, corrosion resistance and magnetic conductivity.

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