Patent ID: 9238849
Filing Date: 2016-01-19
CPC Classification: C21D,C22C

Claim Text:
1. A steel sheet for an oil sand slurry pipe having excellent abrasion resistance, corrosion resistance, and low-temperature toughness, the steel sheet comprising: 0.2 wt % to 0.35 wt % of carbon (C); 0.1 wt % to 0.5 wt % of silicon (Si); 0.5 wt % to 1.8 wt % of manganese (Mn); 0.1 wt % to 0.6 wt % of nickel (Ni); 0.005 wt % to 0.05 wt % of niobium (Nb); 0.005 wt % to 0.02 wt % of titanium (Ti); 0.03 wt % or less of phosphorous (P); 0.03 wt % or less of sulfur (S); 0.05 wt % or less (excluding 0 wt %) of aluminum (Al); 0.01 wt % or less (excluding 0 wt %) of nitrogen (N); and iron (Fe) as well as other unavoidable impurities as a remainder, wherein a microstructure of the steel sheet is composed of 50 area % to 80 area % of pearlite and ferrite as a remainder.