HIGH YOUNG'S MODULUS STEEL PLATE AND PROCESS FOR PRODUCTION THEREOF

摘要

A steel plate exhibiting a high Young's modulus in the direction of rolling as determined by the static tensile method, which has a composition substantially containing by mass C: 0.005 to 0.200%, Si: 2.50% or below, Mn: 0.10 to 3.00%, N: 0.0100% or below, Nb: 0.005 to 0.100%, and Ti: 0.002 to 0.150% and satisfying the relationship: Ti-48/14OE>0.0005 and in which at 1/6 of theplate thickness, the sum of the X-ray random intensity ratios of {100}<001> and {110}<001> orientations is 5 or below and the sum of the maximum value of the X-ray random intensity ratios of a group of {110}<111> to {110}<112> orientations and the X-ray random intensity ratio of {211}<111> orientation is 5 or above; and a process for the production of the steel plate.