公开(公告)号：EP3243922A4

公开(公告)日：2018-06-13

申请号：EP16734989

申请日：2016-01-07

申请人： KK TOSHIBA INC

发明人： OINUMA SHUN ,  IMAI KIYOSHI ,  MIYASHITA SHIGEKAZU ,  NEMOTO KUNIYOSHI

IPC分类号： C22C38/00 ,  C22C19/00 ,  C22C19/05 ,  C22C30/00 ,  C22C38/06 ,  C22C38/10 ,  C22C38/40 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/52 ,  C22C38/54 ,  F01D5/28 ,  F01D9/02 ,  F01D9/04 ,  F01D25/00 ,  F02C7/00

CPC分类号： C22C38/32 ,  C21D2211/001 ,  C22C19/058 ,  C22C30/00 ,  C22C38/00 ,  C22C38/004 ,  C22C38/06 ,  C22C38/105 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/30 ,  C22C38/40 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/52 ,  C22C38/54 ,  F01D5/28 ,  F01D9/02 ,  F01D9/041 ,  F01D25/00 ,  F01D25/005 ,  F02C7/00 ,  F05D2220/30 ,  F05D2300/171

摘要： There are provided austenitic heat resistant steel and a turbine component capable of reducing a linear expansion coefficient and securing sufficient weldability while keeping high-temperature creep strength. The austenitic heat resistant steel of the embodiment contains: 24 to 50% by mass ofNi, 5 to 13% by mass of Cr, 0.1 to 12% by mass of Co, 0.1 to 5% by mass of Nb, 0.1 to 0.5% by mass of V, 1.90 to 2.35% by mass of Ti, 0.01 to 0.30% by mass of Al, 0.001 to 0.01% by mass of B, 0.001 to 0.1% by mass of C, and the balance being Fe and inevitable impurities.