STEEL WITH IMPROVED SAFETY THROUGH SWITZERLAND AND FARMING ZONES

摘要

A steel having excellent HAZ toughness can be used for ships, buildings, pressure containers, linepipes, and so forth. The steel is of a Ti-Mg-O system steel containing at least 40 pcs/mm2 of oxide and composite oxide particles of Ti and Mg having a size of 0.001 to 5.0 mu m. A steel having excellent HAZ toughness can be produced, and the safety of structures using this steel can be remarkably improved.