Patent ID: 8506883

Claim:
A weldable, high temperature, oxidation resistant alloy consisting essentially of, by weight percent 26.8% to 31.8% iron, 18.9%-24.3% chromium, 3.1%-3.9% aluminum, 0.3%-0.4% titanium, 0.25-0.35% silicon, up to 0.4% manganese, up to 0.005% of each of yttrium, cerium and lanthanum, up to 0.06% carbon, less than 0.004% boron, less than 0.01% zirconium and the balance nickel plus impurities, Al+Ti content is from 3.4% to 4.2% and chromium and aluminum are present in amounts so that a Cr/Al ratio is from 4.5 to 8.