The high corrosion-resistant chrome content steel null which is superior in the oxidation resistance and

摘要

PROBLEM TO BE SOLVED: To produce high corrosion resistance chromium-contg. steel having corrosion resistance and oxidation resistance equal to those of low Cr stainless steel (the Cr content: 11 to 13 wt.%) though the Cr content therein is low to a degree by which it does not fall under the category of stainless steel and moreover having excellent intergranular corrosion resistance. ;SOLUTION: This high corrosion resistance chromium-contg. steel is has a compsn. contg., by weight, ≤0.015% C, 1.0 to 2.0% Si, ≤0.5% Mn, ≤0.05% P, ≤0.01% S, ≤1.0% Ni, 5.0 to 10.4% Cr, ≤0.1% Al and ≤0.015% N, where the total content of (C+N) is controlled to ≤0.020% and 0.30 to 0.50% Ti, and in which the contents of Cr, Ti and N also lie in the relation satisfying the inequality of [Ti]/([C]+[N])≥64-4×[Cr], and the balance Fe with the other inevitable impurities.;COPYRIGHT: (C)2000,JPO