| 摘要 |
<p>Provided are a steel sheet for an oil sand slurry pipe with excellent erosion-resistance and low temperature toughness and a method for manufacturing the same, wherein the steel sheet includes: 0.25-0.35 wt% of carbon (C), 0.1-0.5 wt% of silicon (Si), 1.4-1.8 wt% of manganese (Mn), less than 0.03 wt% of phosphorus (P), less than 0.03 wt% of sulfur (S), less than 0.05 wt% of aluminum (Al), less than 0.01 wt% of nitrogen (N), 0.005-0.05 wt% of niobium (Nb), 0.005-0.02 wt% of titanium (Ti), 0.05-0.5 wt% of chrome (Cr), and the remainder consisting of iron (Fe) and inevitable impurities. The content of the chrome (Cr) and the manganese (Mn) satisfies [Cr+Mn<=2.0%]. The microstructure of the steel sheet includes a composite structure of ferrite and pearlite. According to the present invention, the steel sheet for an oil sand slurry pipe with excellent erosion-resistance and low temperature toughness and the method for manufacturing the same can allow a pipe to be easily assembled by optimizing a steel component and a micro structure and increase erosion-resistance and low temperature toughness at low costs.</p> |
