HOT DIE Ni-BASED ALLOY, HOT FORGING DIE USING SAME, AND FORGED PRODUCT MANUFACTURING METHOD

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Provided is a hot die Ni-based alloy with high high-temperature compression strength and good oxidation resistance and for which deterioration of the work environment and shape deterioration can be limited. The alloy is a hot die Ni-based alloy of W : 7.0-12.0%, Mo : 4.0-11.0%, Al : 5.0-7.5%, Cr : 0.5-7.5%, the balance being made of Ni and unavoidable impurities. In addition to said composition, the alloy can also contain 0.5-7.0% Ta and can also contain one or more species selected from the elements : Zr : 0.001-0.5%, Hf : 0.001-0.5%, rare earth elements : 0.001-0.2%, Y : 0.001-0.2% and Mg : 0.001-0.03%. For this hot die Ni-based alloy, the 0.2% compression strength at test temperature : 1000°C and strain rate : 10-3/sec can be made to be 500 MPa or more.