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公开(公告)号：US20230212724A1
公开(公告)日：2023-07-06
申请号：US18001149
申请日：2021-06-23
IPC分类号： C22C38/58 , C22C38/00 , C22C38/54 , C22C38/52 , C22C38/50 , C22C38/48 , C22C38/44 , C22C38/42 , C22C38/06 , C22C38/02 , C21D9/08 , C21D8/10
CPC分类号： C22C38/58 , C22C38/001 , C22C38/54 , C22C38/52 , C22C38/50 , C22C38/48 , C22C38/44 , C22C38/42 , C22C38/06 , C22C38/02 , C22C38/008 , C22C38/005 , C22C38/002 , C21D9/08 , C21D8/105 , F16L13/02
摘要： There is provided a duplex stainless steel tube including a chemical composition consisting of, in mass %, C: 0.008 to 0.030%, Si: 0.10 to 0.70%, Mn: 0.80 to 2.60%, P: 0.030% or less, S: 0.0001 to 0.0050%, O: 0.0004 to 0.0150%, Sn: 0.0001% or more to less than 0.0100%, Cu: 0.10 to 2.50%, Ni: more than 2.50 to 5.50% or less, Cr: 21.5 to 25.5%, Mo: 0.10 to 0.50%, N: 0.050 to 0.200%, Al: 0.200% or less, and optional elements, with the balance: Fe and impurities, wherein 4S+8O+Sn is 0.0040 to 0.0900, and 4S+Sn is 0.0180 or less.
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公开(公告)号：US20200238444A1
公开(公告)日：2020-07-30
申请号：US16753190
申请日：2018-10-03
IPC分类号： B23K35/30
摘要： A welding material for austenitic heat resistant steel is provided that has a chemical composition which consists of, by mass %, C: 0.06 to 0.14%, Si: 0.10 to 0.40%, Mn: 2.0 to 4.0%, P: 0.020% or less, Cu: 2.0 to 4.0%, Ni: 15.0 to 19.0%, Cr: 16.0 to 20.0%, Mo: 0.50 to 1.50%, Nb: 0.30 to 0.60%, N: 0.10 to 0.30%, Al: 0.030% or less, O: 0.020% or less, S: 0 to 0.0030%, Sn: 0 to 0.0030%, Bi: 0 to 0.0030%, Zn: 0 to 0.0030%, Sb: 0 to 0.0030%, As: 0 to 0.0030%, V: 0 to 0.50%, Ti: 0 to 0.50%, Ta: 0 to 0.50%, Co: 0 to 2.0%, B: 0 to 0.020%, Ca: 0 to 0.020%, Mg: 0 to 0.020%, REM: 0 to 0.06%, with the balance being Fe and impurities, and which contains two or more types of element selected from S, Sn, Bi, Zn, Sb and As within a range that satisfies [0.0005≤S+Sn+Bi+Zn+Sb+As≤0.0030].
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