STEEL HAVING SUPERIOR CORROSION RESISTANCE TO OXIDATION AT HIGH TEMPERATURE AS WELL AS TO WET CORROSION BY EXHAUST GAS

摘要

PURPOSE:To obtain the steel having superior corrosion resistance to oxidation at high temp. as well as to the wet corrosion by exhaust gas, by incorporating specific amounts of C, Si, Mn, and Cr to steel. CONSTITUTION:The steel consisting of, by weight, 0.06% C, 0.3-1.5% Si, 0.5% Mn, 1.5-5% Cr, and the balance Fe with inevitable impurities is refined; Cr is preferably 1.5-3%, more preferably 1.5-2%. This steel is cast and subjected to hot forging, hot rolling, cold rolling, and annealing to produce the steel sheet.