Ni-base alloy weld metal and ni-base alloy covered electrode

A Ni-base alloy covered electrode comprising a core wire composed of a Ni-base alloy and a covering material that contains a component of a flux and covers a periphery of the core wire,

• wherein the core wire contains, relative to the total mass of the core wire, Cr:
• 28.0 to 31.5% by mass, Fe:
• 7.0 to 11.0% by mass, Nb and Ta:
• 1.0 to 2.0% by mass in total, C:
• 0.05% or less by mass, Mn:
• 4.0 to 5.5% by mass, N:
• 0.001 to 0.02% by mass, Si:
• 0.70% or less by mass, Mg:
• 0.0010% or less by mass, Al:
• 0.50% or less by mass, Ti:
• 0.50% or less by mass, Mo:
• 0.50% or less by mass, and Cu:
• 0.50% or less by mass, the balance being Ni and incidental impurities;
• contents of B and Zr in the core wire are controlled to be 0.0010% or less by mass and 0.0010% or less by mass, respectively;
• and contents of Co, P, and S in the incidental impurities are controlled to be 0.10% or less by mass, 0.015% or less by mass, and 0.015% or less by mass, respectively,
• the covering material contains, as the component of a flux, a slag-forming agent:
• 3.5 to 6.5% by mass, a metal fluoride (in terms of F content):
• 2 to 5% by mass, and a carbonate (in terms of CO2 content):
• 2.5 to 6.5% by mass relative to the total mass of the covered electrode;
• a Mn content in the flux is controlled to be 2.0% or less by mass;
• a total content of Nb and Ta in the flux is controlled to be 1.5% or less by mass;
• and a Fe content in the flux is controlled to be 2.5% or less by mass.