High corrosion resistant austenitic stainless steel with excellent impact toughness and hot workability

摘要

In the present specification, a high corrosion resistance austenitic stainless steel excellent in impact toughness and hot workability is disclosed. According to an embodiment of the disclosed high corrosion resistance austenitic stainless steel, the high corrosion resistance austenitic stainless steel is by weight %, C: 0.03% or less (excluding 0), Si: 1.0% or less, Mn: 1.0% or less, Cr : 18 to 24%, Ni: 16 to 24%, Mo: 5.0 to 7.0%, Cu: 0.1 to 2.0%, W: 1.0% or less, N: 0.18 to 0.3%, Al: 0.02 to 0.1%, O: 0.01 % Or less, Ca: 0.002 to 0.01%, S: less than 0.001%, the remaining Fe and unavoidable impurities are included, and O/Al: 0.01 to 0.12, S/Ca: 0.01 to 0.4 are satisfied.