STRUCTURAL Al-Zr ADDED STEEL AND MANUFACTURING METHOD THEREOF

摘要

PROBLEM TO BE SOLVED: To disperse ZrO₂ reliably into molten steel thereby to disperse the ZrO₂ into the steel.;SOLUTION: A structural Al-Zr added steel is characterized in that a component composition contains Al: 0.015 to 0.500%, Zr: 0.010 to 0.100%, and O: 0.0020% or less, in that mass % of Al : and mass % of Zr, and [Zr] satisfies the following formula: [Zr]/[Al]≥0.06.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2018,JPO&INPIT