As the regulations for side impact safety of automobiles become more stringent, higher strength DIMs (door impact beams) have become necessary. Recently, an ultra-high-strength, hot rolled steel has been developed for this purpose. Due to its optimized chemical composition, the newly developed steel also exhibits excellent delayed-fracture resistance characteristics. DIBs made of the newly developed steel respond very well to crash situations and have a delayed fracture resistance of 1620 MPa. Applications for this newly developed steel are expected to grow.
Hot rolled steel sheets for 1,620 MPa grade ultra high strength quench-type automobile door impact beams
Warmgewalzte Stahlbleche für die Stoßbalken von Fahrzeugtüren aus gehärtetem ultrahochfesten Stahl der Güte 1620 MPa
Titel japanisch
Kobe Steel Engineering Reports, Research and Development ; 57 , 2 ; 23-26
2007
4 Seiten, 10 Bilder, 3 Tabellen, 9 Quellen
Article (Journal)
Japanese
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