公开(公告)号：US20110268601A1

公开(公告)日：2011-11-03

申请号：US13138119

申请日：2010-05-18

申请人： Yoshiyuki Watanabe ,  Kazuhiro Fukunaga ,  Akihiko Kojima ,  Ryuji Uemori ,  Rikio Chijiwa

发明人： Yoshiyuki Watanabe ,  Kazuhiro Fukunaga ,  Akihiko Kojima ,  Ryuji Uemori ,  Rikio Chijiwa

IPC分类号： C22C38/16 ,  C22C38/08 ,  B22D11/00

CPC分类号： C22C38/16 ,  C21D8/02 ,  C21D9/50 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14

摘要： A steel for a welded structure includes the following composition: by mass %, C at a C content [C] of 0.015 to 0.045%; Si at a Si content [Si] of 0.05 to 0.20%; Mn at a Mn content [Mn] of 1.5 to 2.0%; Ni at a Ni content [Ni] of 0.10 to 1.50%; Ti at a Ti content [Ti] of 0.005 to 0.015%; O at an O content [O] of 0.0015 to 0.0035%; and N at a N content [N] of 0.002 to 0.006%, and a balance composed of Fe and unavoidable impurities. In the steel for a welded structure, the P content [P] is limited to 0.008% or less, the S content [S] is limited to 0.005% or less, the Al content [Al] is limited to 0.004% or less, the Nb content [Nb] is limited to 0.005% or less, the Cu content [Cu] is limited to 0.24% or less, the V content [V] is limited to 0.020% or less, and a steel composition parameter PCTOD is 0.065% or less, and a steel composition hardness parameter CeqH is 0.235% or less.

摘要翻译： 用于焊接结构的钢包括以质量％计的C含量[C]为C = 0.015〜0.045％的组成： Si含量[Si]为0.05〜0.20％的Si; Mn含量[Mn]为1.5〜2.0％的Mn; Ni量[Ni]为0.10〜1.50％的Ni; Ti含量[Ti]为0.005〜0.015％的Ti; O的含量[O]为0.0015〜0.0035％; N为N，0.002〜0.006％，余量由Fe和不可避免的杂质构成。 在焊接结构钢中，P含量[P]限制在0.008％以下，S含量[S]限制在0.005％以下，Al含量[Al]限定在0.004％以下， 将Nb含量[Nb]限制在0.005％以下，将Cu含量[Cu]限制在0.24％以下，将V含量[V]限制在0.020％以下，钢结构参数PCTOD为0.065 ％以下，钢组合物硬度参数CeqH为0.235％以下。