| 摘要 |
PROBLEM TO BE SOLVED: To provide a Ni-based alloy having a composition so that variation in strength depending on place is minimized even when a solidification rate becomes slow and a microsegregation becomes large when manufacturing large product by casting.SOLUTION: The Ni-based casting alloy has a composition containing, by mass%, C of 0.001% to 0.1%, Cr of 15% to 23%, Mo of 0% to 11.5%, W of 3% to 18%, Fe ot 5% or less, Co of 10% or less, Ti of 0.4% or less, Al of 0.4% or less, and Nb and Ta of 0.5%≤Nb+Ta≤4.15% and the balance inevitable impurities and Ni, and satisfying 7%≤Mo+1/2 W≤13%. |
