Mitsubishi Heavy Industries Limited

Nippon Welding Rod Co., Ltd.

Tetsuya Sango

Kenji Kawasaki

Yusuke Sano

Teiichiro Saito

Tamao Takatsu

Masahiko Toyoda

Seiji Asada

Seiichi Kawaguchi

Norihito Ogawa

Akira Konishi

Provided is a high Cr Ni-based alloy welding wire with which tensile strength and weld cracking resistance of a welded portion, the integrity of the microstructure of a welded metal, and inhibition of scale generation are improved. The high Cr Ni-based alloy welding wire is configured to have an alloy composition comprising, by mass, C: 0.04% or less, Mn: 7% or less, Fe: 1 to 12%, Si: 0.75% or less, Al: 0.01 to 0.7%, Ti: 0.01 to 0.7%, Cr: 25.0 to 31.5%, Ta: 1 to 10%, and Mo: 1 to 6%, and as inevitable impurities, Ca+Mg: less than 0.002%, N: 0.1% or less, P: 0.02% or less, O: 0.01% or less, S: 0.0015% or less, H: 0.0015% or less, Cu: 0.08% or less, and Co: 0.05% or less, and the balance: Ni. Then, the high CrNi-based alloy welding wire is configured such that the contents of S, Ta, Al, and Ti satisfy the following relation (1) and the contents of Ta, Mo, and N satisfy the following relation (2):12000S+0.58Ta&#x2212;2.6Al&#x2212;2Ti&#xa3;19.3&#x2003;&#x2003;(1)Ta+1.6Mo+187N5.7&#x2003;&#x2003;(2).

High Cr Ni-based alloy welding wire, shielded metal arc welding rod, and weld metal formed by shielded metal arc welding

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Tokyo, Japan

Tetsuya Sango