Ni-BASED ALLOY FOR HOT-WORKING DIE, AND HOT-FORGING DIE USING SAME

摘要

Provided are a Ni-based alloy for a hot-working die, and a hot-forging die using the same, the Ni-based alloy having high high-temperature compressive strength and good oxidation resistance and being capable of suppressing working environment degradation and shape degradation. A Ni-based alloy for a hot-working die, comprising 7.0-15.0% W, 2.5-11.0% Mo, 5.0-7.5% Al, 0.5-3.0% Cr, 0.5-7.0% Ta, no more than 0.0010% S, and a total of 0-0.020% of one or more species selected from a rare earth element, Y, and Mg, the remainder comprising Ni and unavoidable impurities. The Ni-based alloy for a hot-working die may further contain, in addition to the above composition, a total of 0.5% or less of one or more species selected from the elements Zr and Hf.