Austenitic stainless steel with excellent intergranular corrosion resistance and high temperature strength

摘要

The present invention relates to austenitic stainless steels used as oxidation and heat resistant steels, and an object thereof is to provide austenitic stainless steels having excellent intergranular corrosion resistance and high temperature strength.;The present invention for achieving the above object is austenitic stainless steel made of Cr: 16-20%, Ni: 8-15%, Mo: 3% or less, Mn: 2% or less and Si: 1% or less In the austenitic stainless steel, C: 0.025% or less, Ti: 0.1-0.2%, N: 0.05-0.095%, and the intergranular corrosion resistance and high temperature formed so as to satisfy the ratio 5-8 The technical gist of an austenitic stainless steel excellent in strength is set.