Wire rod excellent in low-temperature tenacity and used for 60kg-grade welding wire and manufacturing method

The invention discloses a wire rod excellent in low-temperature tenacity and used for a 60kg-grade welding wire and a manufacturing method of the wire rod. The wire rod comprises 0.01%-0.06% of C, 0.50%-0.80% of Si, 1.35%-1.70% of Mn, 2.0%-2.40% of Ni, 0.2%-0.4% of Mo, 0.04%-0.09% of Ti, smaller than or equal to 0.010% of P, smaller than or equal to 0.005% of S, 0.01%-0.03% of Al, smaller than orequal to 20 ppm of O and smaller than or equal to 60 ppm of N, smaller than or equal to 2 ppm of H and the balance Fe and impurities. The yield strength Rp0.2 of the wire rod is larger than or equal to 600 MPa, the tensile strength Rm is larger than or equal to 730 MPa, and the ductility A is larger than or equal to 21%. 本发明公开一种低温韧性优良的60kg级焊丝用盘条及其制造方法，C：0.01％～0.06％，Si：0.50％～0.80％，Mn：1.35％～1.70％，Ni：2.0％～2.40％，Mo：0.2％～0.4％，Ti：0.04％～0.09％，P：≤0.010％，S：≤0.005％，Al：0.01％～0.03％，O：≤20ppm，N：≤60ppm，H：≤2ppm，余量为Fe和杂质。盘条屈服强度Rp0.2≥600MPa，抗拉强度Rm≥730MPa，延伸率A≥21％。