| 摘要 |
The present invention relates to a welding joint having remarkable impact resistance and abrasion resistance. One embodiment of the present invention provides a welding joint having remarkable impact resistance and abrasion resistance, comprising 0.02-0.75 wt% of C, 0.2-1.2 wt% of Si, 15-27 wt% of Mn, 2-7 wt% of Cr, 0.025 wt% or less of S, 0.025 wt% or less of P, 0.001-0.4 wt% of N, and the balance of Fe and other inevitable impurities, and having a stacking-fault energy of 15-40 mJ/m2 at 20°C. According to the present invention, provided is a welding joint having remarkable low temperature impact toughness and abrasion resistance, and thus provided is a welding joint very preferably applied to a slurry pipe and the like used in the oil sand industry field related to oil production. |
