Is superior in resistance stress corrosion crack Characteristic and pitting corrosion resistance the austenite type rustless steel

摘要

PURPOSE:To manufacture an austenitic stainless steel excellent in stress corrosion cracking resistance and pitting corrosion resistance by incorporating specific percentages of C, Si, Mn, Cr, Ni, Cu, Mo, N, and B to Fe. CONSTITUTION:An austenitic stainless steel having a composition consisting of, by weight, =0.06% C, 1.0-4.0% Si, =0.3% Mn, 18-23% Cr, 8-18% Ni, 1.0-3.0% Cu, 0.3-0.7% Mo, =0.05% N, 0.001-0.005% B, and the balance Fe with inevitable impurities is prepared. By this method, the austenitic stainless steel excellent in stress corrosion cracking resistance in a relatively mild environment and also having superior pitting corrosion resistance can be obtained.