| 摘要 |
PROBLEM TO BE SOLVED: To provide a high corrosion-resistant alloy excellent in grain-boundary corrosion resistance under atmosphere containing nitric acid while effectively suppressing precipitations of intermetallic compounds such as Cr-carbide and χ-phase into the crystal grain-boundary, by making sure of the limitation of desirable mutual relation of C content and Si content for giving to the grain-boundary corrosion resistance. SOLUTION: This high corrosion-resistant alloy excellent in the grain-boundary corrosion-resistance, contains, by mass, ≤0.015% C, ≤0.45% Si, ≤2.00% Mn, ≤0.040% P, ≤0.030% S, 16.00-30.00% Ni (or 20.0-40.0% Fe), 19.00-25.00% Cr, 2.00-8.00% Mo, 0.001-0.300% N and the balance substantially Ni or Fe, and satisfies the following formula; Si+8×C≤0.51Si+8×C≤0.51, (wherein, Si and C represent the content by mass%). COPYRIGHT: (C)2010,JPO&INPIT |
