Patent ID: 8361245
Filing Date: 2013-01-29
Classification: C21D,C22C

Abstract:
1. Steel excellent in resistance to sulfuric acid dew point corrosion consisting of, by mass %, C: ≦0.010%, Si: ≦0.10%, Cu: 0.05 to 1.00%, P: ≦0.030%, S: ≦0.011%, Cr: 1.25 to 3.0%, and Al: ≦0.10%, and a balance of Fe and unavoidable impurities and having a sulfuric acid corrosion resistance indicator R value found by the following equation <1> of −0.90 or less: where, α is defined by the following equation <2>, [Si] is the mass % of Si, [C] is the mass % of C, and log is a common logarithm.