POSCO Holdings Inc.
HIGH-STRENGTH HIGH-TOUGHNESS THICK STEEL PLATE AND MANUFACTURING METHOD THEREFOR

Abstract:

The objective of one aspect of the present invention is to provide: a thick steel plate having high strength and high toughness without carrying out accelerated cooling using water cooling, in the manufacturing, by means of a thermomechanical control process (TMCP), of a thick steel having a thickness of 15 mmt and over; and a method for manufacturing the same.