COATED ELECTRODE FOR ARC WELDING OF AUSTENITIC STAINLESS STEEL HAVING EXCELLENT Cu BRITTLE CRACK RESISTANCE

摘要

PROBLEM TO BE SOLVED: To provide a coated electrode for the arc welding of austenitic stainless steel having excellent Cu brittle crack resistance.;SOLUTION: The coated electrode for the arc welding of austenitic stainless steel contains, in a coating agent, by mass% based on the total mass of the welding electrode, 0.05 to 3.0% of Cu, and at least one of 0.05 to 0.2% of Bi and 0.05 to 0.2% of Bi₂O₃ within the range of 0.2% or less in total amount of Bi and Bi₂O₃, and further contains, in total of one or both of a core wire and the coating agent, by mass% based on the total mass of the welding electrode, 0.005 to 0.05% of C, 0.1 to 1.6% of Si, 0.1 to 2.5% of Mn, 15.0 to 30.0% of Cr, 7.5 to 25.0% of Ni, 0.5 to 6.7% of Mo, 0.05 to 5.0% of Cu, 0.05 to 0.35% of N, and the remainder of iron and unavoidable impurities.;COPYRIGHT: (C)2007,JPO&INPIT