| 摘要 |
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 |
