公开(公告)号：US20230151470A1

公开(公告)日：2023-05-18

申请号：US17624969

申请日：2020-12-30

Applicant: POSCO

Inventor： Kyunghun Kim ,  Hak Kim ,  Jisoo Kim ,  Jongjin Jeon

IPC: C22C38/58 ,  C22C38/44 ,  C22C38/00 ,  C22C38/02 ,  C22C38/42

CPC classification number: C22C38/58 ,  C22C38/44 ,  C22C38/001 ,  C22C38/02 ,  C22C38/42

Abstract: Provided is a non-magnetic austenitic stainless steel. According to an embodiment of the disclosed non-magnetic austenitic stainless steel, the non-magnetic austenitic stainless steel includes, in percent by weight (wt %), 0.01 to 0.1% of carbon (C), 1.5% or less (excluding 0) of silicon (Si), 0.5 to 3.5% of manganese (Mn), 16 to 22% of chromium (Cr), 7 to 15% of nickel (Ni), 3% or less of molybdenum (Mo), 0.01 to 0.3% of nitrogen (N), and the remainder of iron (Fe) and inevitable impurities, wherein a value of Expression (1) below is a negative value: (1) 3*(Cr+Mo)+5*Si−65*(C+N)−2*(Ni+Mn)−28, wherein in Expression (1), Cr, Mo, Si, C, N, Ni, and Mn denote contents (wt %) of the alloy elements, respectively.