Wire rod for ultrahigh-strength gas shielded welding wire with yield strength of 1100 MPa

The invention discloses a wire rod for an ultrahigh-strength gas shielded welding wire with the yield strength of 1100 MPa. Belongs to the field of steel ultrahigh-strength welding materials. The steel comprises the following chemical components: 0.08 to 0.15 percent of C, 0.70 to 0.90 percent of Si, 1.80 to 2.10 percent of Mn, less than or equal to 0.015 percent of P, less than or equal to 0.015 percent of S, 0.50 to 0.80 percent of Cr, 2.80 to 3.50 percent of Ni, less than or equal to 0.15 percent of Cu, 0.50 to 0.80 percent of Mo, 0.05 to 0.12 percent of Ti, 0.20 to 0.30 percent of V, less than or equal to 0.10 percent of Zr, less than or equal to 0.0050 percent of O, less than or equal to 0.0070 percent of N and the balance of Fe and inevitable impurities. Based on the wire rod for the gas shielded welding wire, the invention further discloses the ultrahigh-strength gas shielded welding wire with the yield strength of 1100 MPa. The welding wire is suitable for gas shielded welding of ultrahigh-strength st