JFE Steel has developed two new high strength hot-rolled steel sheets which provide excellent performance in automobile suspension and chassis parts: (1) 'NANOHITEN', a new precipitation-hardened high strength hot-rolled steel sheet in which precipitates are refined to a size of several nanometers, giving the material an excellent balance of elongation and the hole-expansion ratio, and (2) 'BHT steel sheet (bake-hardenable steel with tensile strength increase)', a new strain-aging type high strength hot-rolled steel sheet which features low strength and high formability during forming and a large increase in tensile strength after paint baking, resulting in a higher fatigue limit and improved crashworthiness. This paper describes the features and properties of these new products. (Engl. translation from JFE GIHO, 2004, No.4, p.22-27, (jap.))


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    Title :

    High strength steel shetts for automobile suspension and chassis use - High strength hot-rolled steel sheets with excellent press formability and durability for critical safety parts


    Additional title:

    Hochfestes Stahlblech für die Fahrzeugsaufhängung und das Fahrgestell - hochfestes warmgewalztes Stahlblech mit ausgezeichneter Formbarkeit und Haltbarkeit von Bauteilen mit kritischer Betriebssicherheit


    Contributors:

    Published in:

    Publication date :

    2004


    Size :

    7 Seiten, 9 Bilder, 2 Tabellen, 15 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English





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