AUSTENITE STAINLESS STEEL Russian patent published in 2011 - IPC C22C38/58 

FIELD: metallurgy.

SUBSTANCE: steel contains, wt %: from 0.05 to 0.2 of carbon, from 0.08 to 0.2 of nitrogen, from 20 to 23 of chromium, from 25 to 27 of nickel, from 1 to 2 of molybdenum, from more, than 1.5 to 4.0 of manganese, from 0.20 to 0.75 of niobium, at least one element from not more, than 0.1 of titanium and not more, than 0.1 of aluminium, iron and side impurities. Steel can contain to 0.3 wt % of aluminium. Ration of niobium ro carbon in steel is: 0.7 < (niobium/carbon) ≤ 1.0, where contents of niobium and carbon are expressed in atomic percents.

EFFECT: steel possesses raised resistance to creepage at high temperature or increased resistance to corrosion.

38 cl, 9 dwg, 6 tbl