CO-NI BASE HEAT-RESISTANT ALLOY AND METHOD FOR PRODUCTION THEREOF

摘要

A Co-Ni base heat-resistant alloy is composed of, all by weight: not more than 0.05 mass% of C; not more than 0.5 mass% of Si; not more than 1.0 mass% of Mn; 25 to 45 mass% of Ni; 13 to less than 18 mass% of Cr; 7 to 20 mass% of Mo + 1/2W of one kind or more of Mo and W; 0.1 to 3.0 mass% of Ti; 0.1 to 5.0 mass% of Nb; 0.1 to 5.0 mass% of Fe, with the balance of substantially Co and inevitable impurities.