The weld is superior corrosion-resistant the clad steel and the funnel null for the coal burning thermal power generation plant funnel flame tube

摘要

PROBLEM TO BE SOLVED: To produce a clad steel excellent in corrosion resistance in a weld zone under a coal-fired thermal power plant smokestack environment and a high efficiency smokestack using the same.;SOLUTION: A cladding material is composed of an alloy which has a composition consisting of, by weight, ≤0.02% C, 23-27% Cr, 21-27% Ni, 0.1-0.3% N, 1-2% Cu, further at least either of Mo and W in amounts within the range satisfying Mo+1/2×W=3.5 to 5.0%, and the balance essentially Fe and satisfying the inequality Ni-0.6Cr+1.5(Mo+1/2×W)+7.5Cu+122N≥45. A base material is composed of carbon steel.;COPYRIGHT: (C)2001,JPO