NI-BASED SUPERALLOY FOR HIGH-TEMPERATURE FASTENING MEMBER, AND MANUFACTURING METHOD THEREFOR

摘要

According to one aspect of the present invention, provided is a nickel-based superalloy for a high-temperature fastening member, having a composition range comprising, by wt%, 6-8 of cobalt (Co), 11-13 of chromium (Cr), 9-12 of molybdenum (Mo), tungsten (W) in an amount greater than 5 and less than 10, 0.02-0.08 of carbon (C), 0.5-2.0 of aluminum (Al), 0.8-2.0 of titanium (Ti), 0.1-1.0 of niobium (Nb), boron (B) in an amount greater than 0 and less than or equal to 0.0008, zirconium (Zr) in an amount greater than 0 and less than or equal to 0.03, and the balance of nickel (Ni) and other inevitable impurities.