AUSTENITIC STAINLESS STEEL HAVING SUPERIOR RESISTANCE TO STRESS CORROSION CRACKING AND PITTING CORROSION

摘要

PURPOSE:To obtain an austenitic stainless steel having superior resistance to stress corrosion cracking and pitting corrosion by adding small amounts of Mo and N as well as Cu. CONSTITUTION:The composition of an austenitic stainless steel is composed of, by weight, 0.06% C, 1% Si, 0.8% Mn, 0.005% S, 6-20% Ni, 16-25% Cr, 1.5-2.5% Cu, 0.2-0.6% Mo, 0.05-1.5% N and the balance Fe with inevitable impurities. One or more among Ti, Nb and Zr may be added by 0.1-1%.