| 摘要 |
<p>The subject of the invention is to provide a steel material for a structural member which has excellent long term corrosion resistance even anticorrosive means such as coating or lining anticorrosion is not taken under severe corrosive environments. The steel material for a structural member satisfies specified chemical compositions and A value is between -2.0 and 2.0 as prescribed by a following forum (1). A value={([S]/3)+([P]/8)-([Mn]/890)-([Ti]/630)-([Ca]/130)-([Cu]/710)-([Ni]/712)-([Cr]/330)*103}...in(1), [S],[P],[Mn],[Ti],[Ca],[Cu],[Ni] and [Cr] respectively represent the contents (weight%) of S,P,Mn,Ti,Ca,Cu,Ni and Cr.</p> |
