| 摘要 |
PROBLEM TO BE SOLVED: To provide a high corrosion resistance clad steel using an alloy excellent in general corrosion resistance in an acidic environment by the acid dew point in a coal combustion type plant and corrosion resistance in an Cl ion environment of high concn. in which Cl ions are condensed and concentrated into the water of dew condensation and also free from deterioration in corrosion resistance caused by sensitization even in as-rolled state, as a cladding material. SOLUTION: In this clad steel, the cladding material has a compsn. contg., by weight, <=0.02% C, 21 to 27% Cr, 18 to 27% Ni, 0.01 to 0.3% N and 0.1 to 2.0% Cu, moreover contg. one or two kinds of Mo and W in the range of Mo+1/2×W: 3 to 5%, also satisfying Ni-0.6Cr+1.5(Mo+1/2×W)+7.5Cu+122 N>=35, and the balance Fe with inevitable impurities, and the base material is composed of carbon steel.
|
