Patent ID: 8172959

Claim:
An austenitic stainless steel having high stress corrosion crack resistance, containing, in percent by weight, 0.030% or less C, 0.02% or less Si, 0.85% or less Mn, 0.03% or less P, 0.002% or less S, 11 to 20.1% Ni, 17 to 30% Cr, 1.03 to 3% Mo, and 0.003% or less N, the balance substantially being Fe and unavoidable impurities, and having stacking fault energy (SFE) calculated by the following equation (1): SFE (mJ/m 2 )=25.7+6.2×Ni+410×C−0.9×Cr−77×N−13×Si−1.2×Mn (1) that is 100 (mJ/m 2 ) or higher.