Ni-based alloy core wire for covered electrode, covered electrode, and method of manufacturing covered electrode

A Ni-based alloy core wire for a covered electrode comprising, as a chemical composition, by unit mass %:

• C:
• 0.0100% to 0.0800%;
• Si:
• 0.010% to 0.800%;
• Mn:
• 0.010% to 1.800%;
• Mo:
• 15.0% to 28.0%;
• W:
• 2.5% to 8.0%;
• Cu:
• 0.10% to 1.20%;
• Ta:
• 0.002% to 0.120%;
• Ni:
• 65.0% to 82.3%;
• Mg:
• 0% to 0.60%;
• Al:
• 0% to 2.20%;
• Ti:
• 0% to 2.20%;
• P:
• 0.025% or less;
• S:
• 0.025% or less;
• N:
• 0% to 0.150%;
• O:
• 0% to 0.012%;
• Fe:
• 0% to 12.0%;
• Co:
• 0% to 0.150%;
• Cr:
• 0% to 0.150%;
• V:
• 0% to 0.150%;
• Nb:
• 0% to 0.150%;
• B:
• 0% to 0.015%;
• Bi:
• 0% to 0.080%;
• Ca:
• 0% to 0.025%;
• REM:
• 0% to 0.030%;
• Zr:
• 0% to 0.150%;
• and
• a remainder:
• impurities,
• wherein a value X defined by Expression 1 is 0.010% to 0.160%,
• X=[Ta]+10×[REM]:
• Expression 1
• here, symbols indicated in Expression 1 are amounts of corresponding elements by unit mass %.