AUSTENITIC STAINLESS STEEL, METHOD FOR PRODUCING SAME AND STRUCTURE USING SAME

Disclosed is an austenitic stainless steel with excellent stress corrosion cracking resistance which is characterized by consisting of, in weight%, C: 0.030% or less, Si: 0.1% or less, Mn: 2.0% or less, P: 0.03% or less, S: 0.002% or less, Ni: 11-26%, Cr: 17-30%, Mo: 3% or less, N: 0.01% or less and the balance of Fe and unavoidable impurities. Also disclosed is a method for producing an austenitic stainless steel wherein a piece of the above-described austenitic stainless steel is subjected to a solution treatment at 1,000-1,150 UC. Further disclosed are piping and reactor internal structures for nuclear reactors which employ the austenitic stainless steel. Se proporciona un acero inoxidable austenitico que tiene alta resistencia a fisura-corrosion-tension, caracterizado porque contiene en por ciento en peso, 0.030% o menos de C, 0.1% o menos de Si, 2.0% o menos de Mn, 0.03% o menos de P, 0.002% o menos de S, 11 a 26% de Ni, 17 a 30% de Cr, 3% o menos de Mo, y 0.01% o menos de N, el resto sustancialmente es Fe e impurezas inevitables, un metodo de fabricacion para un acero inoxidable austenitico, caracterizado porque una palanquilla que consiste del acero inoxidable austenitico se somete a tratamiento termico en solucion a una temperatura de 1000 a 1150 grados C; y un tubo y una estructura de horno para un reactor nuclear al cual se aplica el acero inoxidable austenitico.