| 摘要 |
PROBLEM TO BE SOLVED: To provide a steel plate for suppressing the occurrence of out-of-plane buckling deformation called "hungry-horse deformation" at welding sites as much as possible when constructing, in particular, a hull structure by welding, by controlling a component composition and strength characteristics of steel, particularly a balance between base-material strength and strength after being affected by welding heat. SOLUTION: The steel plate with little welding-buckling deformation is disclosed, wherein the value of YP<SB>0</SB>is≥400 MPa and the value of YP<SB>0</SB>/YP<SB>1</SB>is≥1, when (YP<SB>0</SB>) represents yield stress of the steel plate and (YP<SB>1</SB>) represents yield stress after the steel plate is subjected to a thermal history described in the text, simulating the thermal affection in welding. COPYRIGHT: (C)2006,JPO&NCIPI
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