Solid gas protection welding wire used for welding crude oil carrier cargo oil tank boat deck

The invention discloses a solid gas protection welding wire used for welding a crude oil carrier cargo oil tank boat deck. The mass percentage ratios of the chemical elements are as follows: 0.02-0.10% of C, 0.30-0.60% of Si, 0.80-1.00% of Mn, 0.02-0.10% of Ti, 0-0.50% of Mo, 0.20-0.50% of Cr, 0.01-0.10% of Al, 0.10-0.80% of Cu, 0.10-0.80% of Ni, and the balance of Fe and other unavoidable impurities. The tensile strength of the solid gas protection welding wire used for welding the crude oil carrier cargo oil tank boat deck provided by the invention is greater than 440 MPa, and the impact work of a weld metal at 20 DEG C below zero is greater than 47 J, so that the solid gas protection welding wire has good corrosion resistance. Besides, the solid gas protection welding wire used for welding the crude oil carrier cargo oil tank boat deck and a mother board for welding have the consistent corrosion resistance and pitting resistance.