FLUX-CORED WIRE FOR STAINLESS STEEL ARC WELDING

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PROBLEM TO BE SOLVED : To provide a flux-cored wire for stainless steel arc welding which is excellent in the weldability in welding in all attitudes and can provide a weld bead more excellent in the low temperature toughness while keeping excellent pitting corrosion resistance in arc welding of duplex stainless steel and the like. SOLUTION : The flux-cored wire for stainless steel arc welding, in the outer sheath made of stainless steel, contains, as percentage to the total mass of the wire, Cr of 22.0 to 30.0%, Ni of 6.0 to 12.0%, Mo of 2.0 to 5.0%, N of 0.20 to 0.35%, TiO2 of 4.0 to 9.0%, SiO2 of 0.1 to 2.0%, ZrO2 of 0.5 to 4.0%, total of Li2O, Na2O and K2O of 0.50 to 1.50%, metal fluoride in terms of fluorine amount of 0.10 to 0.90% and rare earth element of 0.10 to 1.00%. Therein, the flux-cored wire for stainless steel arc welding limits, as percentage to the total mass of the wire, the content of C to 0.04% or less, the content of W to 4.0% or less and the content of Cu to 2.0% or less, the content of Bi2O3 to 0.01% or less, and limits, as percentage to the total mass of the wire, total mass of oxides other than the above oxides to 3.0% or less. COPYRIGHT : (C)2011, JPO&INPIT