SULFURIC ACID DEW POINT CORROSION RESISTANT STEEL AND EXHAUST GAS FLOW-PATH CONSTRUCTIONAL ELEMENT

摘要

PROBLEM TO BE SOLVED: To achieve a sulfuric acid dew point corrosion resistant property without depending on Sb addition in a steel with an ordinary steel as a basis.;SOLUTION: The sulfuric acid dew point corrosion resistant steel is composed of, by mass, 0.005-0.20% C, ≤0.80% Si, ≤1.50% Mn, ≤0.025% P, ≤0.015% S, 0.10-0.50% Cu, ≤0.30% Ni, ≤0.100% Al and the balance Fe with impurities. The steel is useful, especially as a burnt exhaust gas flow-path constructional element in a coal-burning thermal power plant.;COPYRIGHT: (C)2012,JPO&INPIT