CORROSION-RESISTANT STEEL AND ARTICLE MADE FROM SUCH STEEL Russian patent published in 2004 - IPC

FIELD: metallurgy; making corrosion-resistant steels for soldered cellular panels which perform function of load-bearing sound-absorbing structures working at temperatures up to 500 C. SUBSTANCE: proposed corrosion- resistance steel contains the following components, mass-%: carbon, 0.005-0.03; chromium, 5.0-8.0; nickel, 14.0-18.5; molybdenum, 1.0-3.0; aluminum, 0.1-0.4; niobium, 0.1-0.3; zirconium, 0.05-0.2; boron, 0.001-0.003; copper, 0.3-0.8; at last on element from group: cerium, 0.005-0.1; lanthanum, 0.003-0.05; yttrium, 0.001-0.05; the remainder being iron. EFFECT: enhanced strength and serviceability with reduction in ductility and toughness at heating till 450 C. 4 cl, 2 tbl, 1 ex