Cr-Ni-based alloys, quench-solidified molded bodies made of Cr-Ni-based alloys, alloy powders, powder metallurgy molded bodies, cast molded bodies, methods for manufacturing Cr-Ni-based alloys, and machinery and equipment using Cr-Ni-based alloys. Piping member

摘要

The present invention is a metal material that can be suitably used even in a harsh environment such as an oil well, and has a high corrosion resistance and a high wear resistance equal to or higher than those of the conventional one, and is a low-cost Cr—Ni alloy. The challenge is to provide. The Cr—Ni alloy of the present invention contains Cr of more than 40.0% and 65.0% or less, Fe of 0% or more and 35.0% or less, and Mn of 0% or more and less than 2.0% in mass%. (1) C of more than 1.1% and 4.0% or less (2) B of 0.7% or more and 3.0% or less (3) C of 0.5% or more and 2.5% or less, and 0 It contains any of Nb of more than% and 20% or less, and the balance is composed of Ni and unavoidable impurities, and the Ni is 15% or more.