STEEL FOR WELDING

摘要

This steel material for welding has a steel component in which: PCTOD is 0.065% or less, CeqH is 0.225% or less, FB is 0.0003% or more, and Bp is 0.09% to 0.30%; and at the plate-thickness center portion in the cross-section in the plate thickness direction, oxide particles having an equivalent circle diameter of no less than 2 µm are present in numbers of no more than 20 per mm2, and Ti oxides having an equivalent circle diameter of 0.05 to 0.5 µm are present in numbers of 1.0 × 103 to 1.0 × 105 per mm2.