AUSTENITE STAINLESS STEEL OF HIGH RESISTANCE TO INTER-CRYSTALLINE CORROSION AND CORROSION CRACKING UNDER LOAD AND PROCEDURE FOR PRODUCTION OF MATERIAL OUT OF AUSTENITE STAINLESS STEEL Russian patent published in 2011 - IPC C21D6/00 C22C38/40 C22C38/54 C21D8/02 

FIELD: metallurgy.

SUBSTANCE: there is produced ingot out of steel containing, wt %: C- 0.005 or less, Si- 0.5 or less, Mn- 0.5 or less, P- 0.005 or less, S- 0.005 or less, Ni- (15.0-40.0), Cr- (20.0-30.0), N-0.01 or less, O- 0.01 or less, rest is Fe unavoidable impurities and wherein contents of B included to unavoidable impurities is 3 ppm or less. An ingot is hot treated, then thermo-treated for solid solution.

EFFECT: high resistance to inter-crystalline corrosion and to corrosion cracking under load in two mediums.

7 cl, 2 dwg, 2 ex, 4 tbl