NICKEL ALLOY HAVING SUPERIOR SURFACE PROPERTIES AND PRODUCTION METHOD FOR THE SAME

A nickel alloy having superior surface properties by controlling the composition of non-metallic inclusions that affect surface properties, and a method for producing the same. A nickel alloy includes: all by mass %, Ni: 99.0% or more, C: 0.020% or less, Si: 0.01 to 0.3%, Mn: 0.3% or less, S: 0.010% or less, Cu: 0.2% or less, Al: 0.001 to 0.1%, Fe: 0.4% or less, O: 0.0001 to 0.0050% or less, Mg: 0.001 to 0.030%, Ca: 0.0001 to 0.0050%, B: 0.0001 to 0.01%, and the balance of inevitable impurities; the alloy including non-metallic inclusions, in which the non-metallic inclusions include one or more of MgO, CaO, CaO-Al2O3-based oxides, CaO-SiO2-based oxides, CaO-MgO-based oxides, and MgO·Al2O3, the MgO·Al2O3 has a number ratio of number 50% or less with respect to all oxide-based, non-metallic inclusions.