toughcore® high-strength TMCP heavy plates with higher thickness and excellent toughness cannot be manufactured in any other production process. Penstock or machinery applications that require quenched and tempered (QT) steel can now be substituted by toughcore® TMCP steel. Benefiting from the lower carbon content and the lower sensitivity to cold cracking, TMCP steel can be welded without preheating, at a lower rate of failure and with higher heat input.