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.
Ultra-high-strength, quench-type, hot-rolled steel sheets of 1,620 MPa grade for automobile door impact beams
Warmgewalzte Stahlbleche aus gehärtetem ultrahochfestem Stahl der Güte 1620 MPa für Seitenaufprallträger von Fahrzeugtüren
Kobelco Technology Review ; Oct. , 28 ; 13-17
2008
5 Seiten, 8 Bilder, 3 Tabellen, 9 Quellen
Aufsatz (Zeitschrift)
Englisch
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