| 摘要 |
<p>Disclosed are a steel sheet for a line pipe with excellent deformability and a manufacturing method thereof. The steel sheet for a line pipe with excellent deformability, which is an aspect of the present invention, comprises 0.03-0.07 wt% of C, 0.05-0.2 wt% of Si, 0.5-3.0 wt% of Mn, 0.01-0.3 wt% of Ni, 0.1-0.3 wt% of Cr, 0.01-0.1 wt% of Nb, 0.005-0.02 wt% of Ti, 0.05 wt% or less of Al, and the remainder consisting of Fe and inevitable impurities. A fine structure of the steel sheet includes 60-75 area % of polygonal ferrite, 15-32 area % of acicular ferrite, and 3-10 area % of a second grain.</p> |
