| 摘要 |
PURPOSE: A HSLA (high strength low alloy) cast steel having superior tensile properties at a high temperature is provided which has low generation of deformation and cracks by controlling constituents of the steel to an appropriate range, thereby replacing C-Mn cast steel such as SC used as a slag pot. CONSTITUTION: The steel for slag pot having superior high temperature strength comprises 0.09 to 0.16 wt.% of C, 0.6 to 1.5 wt.% of Mn, 0.025 wt.% or less of P, 0.025 wt.% or less of S, 0.6 wt.% or less of Si, 0.09 to 0.13 wt.% of Ni, 0.35 to 0.4 wt.% of Cr, 0.45 to 0.55 wt.% of Mo, 0.02 to 0.06 wt.% of Al, 0.05 to 0.15 wt.% of one or more elements selected from Nb, V and Ti and a balance of Fe and inevitable impurities.
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