专利名称：Fatigue crack propagation characteristic and structural steel material excellent in coating
durability and its manufacturing method
发明人：三浦 進一，塩谷 和彦，伊木 聡
申请号：JP2019068464
申请日：20190329
公开号：JP2020164952A
公开日：
20201008
专利内容由知识产权出版社提供less is more代言人
摘要：Problem to be solved: to provide a structural steel material with excellent fatigue crack propagation property and coating durability. Mass%C: 0.020% or
more0.200% or lessSi: more than 0.05%1.00% or lessMn: 0.20% or more2.00% or lessP: 0.003% or more0.030% or lessS: 0.0001% or more0.0100% or lessAl: 0.001% or
more0.100% or less and W: 0.005% or moreComponent composition containing less than 1.000%Microstructure of steelComposite structure consisting of hard and soft phasesThe solid fraction of the hard phase isThe average particle size of ferrite, which is the main phase of the soft phase, is 5 to 50. Mu. M.No selection
申请人：ＪＦＥスチール株式会社
地址：東京都千代田区内幸町二丁目２番３号
国籍：JP
代理人：杉村 憲司，杉村 光嗣，川原 敬祐
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