Patent ID: 7799152

Claim:
A method for manufacturing a nickel alloy consisting of, by mass %, C: 0.01-0.04%; Si: 0.05-1%; Mn: 0.07-1%; P: 0.015% or less; S: 0.015% or less; Cr: 28-31%; Ni: 50-70%; Al: 0.5% or less; Ti: 0.01-0.5%; and the balance Fe and impurities, said method comprising a step of cold working the alloy, wherein a final reduction pass in the step of cold working is carried out at an area reduction rate of 70% or more, followed by solution heat treating the cold worked alloy at 900° C. or more to form the nickel alloy, wherein a crystal structure of the nickel alloy has a low angle boundary rate of 4% more as for grain boundaries and the nickel alloy has excellent resistance to intergranular stress corrosion cracking.