Steel material excellent in alcohol pitting resistance and alcohol SCC resistance

摘要

About the component composition of steel materials, in mass%, C: 0.03-0.3%, Si: 0.03-1.0%, Mn: 0.1-2.0%, P: 0.003-0.03%, S: 0.005% or less, Al: 0.005-0.1% , Cu: 0.005 to 0.5%, Sb: 0.01 to 0.5% and Ni: 0.005 to 0.5%, with the balance being Fe and inevitable impurities, the steel itself has pitting corrosion resistance and SCC resistance The steel material with improved resistance to alcohol pitting corrosion and alcohol SCC that can be applied to large structures without the need for plating or addition of inhibitors.