Akinobu Murasato

High strength steel sheet with excellent bore expandability and formability, and its manufacturing method

High-strength steel sheets which are extremely excellent in the balance between burring workability and ductility and excellent in fatigue endurance, zinc-coated steel sheets, and processes for production of both

HIGH-STRENGTH STEEL SHEET HAVING EXCELLENT HYDROGEN EMBRITTLEMENT RESISTANCE AND MAXIMUM TENSILE STRENGTH OF 900 MPa OR MORE, AND PROCESS FOR PRODUCTION THEREOF

HIGH STRENGTH STEEL SHEET EXCELLENT IN HYDROGEN EMBRITTLEMENT RESISTANCE AND HAVING THE MAXIMUM TENSILE STRENGTH OF ≥900 MPa, METHOD FOR PRODUCING HIGH STRENGTH COLD ROLLED STEEL SHEET, AND METHOD FOR PRODUCING HIGH STRENGTH GALVANIZED STEEL SHEET

HIGH STRENGTH COLD ROLLED STEEL SHEET EXCELLENT IN FATIGUE DURABILITY AND HAVING THE MAXIMUM TENSILE STRENGTH OF ≥900 MPa AND METHOD FOR PRODUCING THE SAME, AND HIGH STRENGTH GALVANIZED STEEL SHEET AND METHOD FOR PRODUCING THE SAME

HIGH STRENGTH COLD ROLLED STEEL SHEET EXCELLENT IN MECHANICAL CUTTING PROPERTY AND HAVING MAXIMUM TENSILE STRENGTH OF ≥900 MPa AND METHOD FOR PRODUCING THE SAME, AND HIGH STRENGTH GALVANIZED STEEL SHEET AND METHOD FOR PRODUCING THE SAME

High-strength steel sheet and galvanized steel sheet having very good balance between hole expansibility and ductility, and also excellent in fatigue resistance, and methods of producing the steel sheets

High-strength hot-dip galvanized steel plate having excellent impact resistance and method for producing same, and high-strength alloyed hot-dip galvanized steel sheet and method for producing same

HIGH STRENGTH STEEL PLATE WITH ULTIMATE TENSILE STRENGTH OF 900 MPa OR MORE EXCELLENT IN HYDROGEN EMBRITTLEMENT RESISTANCE AND METHOD OF PRODUCTION OF SAME

High-strength galvannealed steel sheet of high bake hardenability, high-strength alloyed galvannealed steel sheet, and method for manufacturing same