Low-nickel high-manganese austenite wear-resistant steel wire rod and welding wire

The invention discloses a low-nickel high-manganese austenite wear-resistant steel wire rod, which contains Fe and inevitable impurity elements, and further contains the following chemical elements in percentage by mass: 0.05 to 0.20 percent of C, 5.5 to 9.0 percent of Mn, 0.2 to 1.0 percent of Si, 16.0 to 21.0 percent of Cr, 3.0 to 5.0 percent of Ni, 0.10 to 0.17 percent of Nb, 0.10 to 0.20 percent of Ti, 0.12 to 0.17 percent of N and 0.80 to 1.25 percent of Mo. Correspondingly, the invention further discloses a low-nickel high-manganese austenite wear-resistant steel welding wire, and the low-nickel high-manganese austenite wear-resistant steel welding wire is prepared by adopting the low-nickel high-manganese austenite wear-resistant steel welding wire rod. The low-nickel high-manganese austenite wear-resistant steel welding wire designed by the invention can be applied to welding of a high-manganese austenite wear-resistant steel body or welding of dissimilar steel such as bainite reinforced wear-resistan