Patent ID: 11859262
Assignee: FUSHUN SPECIAL STEEL SHARES CO., LTD.
Field: Materials, metallurgy (Chemistry)
Classification: CPC C | IPC C

Claim 5:
6. A large-sized high-Nb superalloy ingot prepared by the smelting process according to claim 1, wherein the high-Nb superalloy ingot is an Alloy 718 with a diameter of 800 mm or above, by mass percentage, having a chemical composition of:
C 0.005-0.04%, Cr 17.0-19.0%, Ni 52.0-55.0%, Nb 4.9-5.5%, Ti 0.75-1.15%, Al 0.35-0.65%, Si≤0.10%, Mn≤0.15%, P≤0.008%, S≤0.002%, Co≤0.50%, Mo 2.8-3.3%, B≤0.006%, Cu≤0.10%, Ca≤0.005%, N≤0.01%, O≤0.003%, and Fe the balance.