Ni WELDING MATERIAL FOR NI-BASED HEAT-RESISTANT ALLOY AND WELDED METAL AND WELDED JOINT EACH USING SAME

摘要

(1) The steel sheet according to the above item (1), wherein the chemical composition is 0.08 to 0.12% of C, 0.1 to 10% of Si, 1.5 to 0.50% of P, 0.008% Al: 0.50 to 1.00%, N: 0.010%, O: 0.010%, Nb: 0 to 0.50%, B: 0 to 0.0050%, Cr: 18.0 to 22.0%, Mo: 6.0 to 10.0% Wherein the thickness of the oxide layer formed on the surface of the welding material is 30 占 퐉 or less and the balance of Fe and impurities is 30 占 퐉 or less; Welding materials. (2) A weld metal using the above-mentioned weld material for a heat-resistant Ni alloy. (3) A weld joint comprising the above-mentioned weld metal and a base material of a heat-resistant Ni-base alloy excellent in high-temperature strength.