The addition of a small amount of vanadium and columbium into SAE 9260 was found to give the steel excellent sag resistance, caused by the precipitation strengthening of V and Cb. The precipitation strengthening enhances the yield strengths in tension and torsion obtained from the specimens with various tempered hardness values after quenching from 900 Cel. The sag resistance was estimated by means of load relaxation under the stresses of 1030 MPa (149 ksi) and 1128 MPa (164 ksi). Using this steel for coil springs is expected to reduce the weight by 25 %, and several new models using the coil springs wound from V-Cb treated steels are going to appear in the market. (Wassmann)


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    Title :

    Precipitation strengthened spring steel for automotive suspensions


    Additional title:

    Vergueteter Federstahl fuer Automobilaufhaengungen


    Contributors:
    Ozone, T. (author) / Kurimoto, M. (author) / Yamamoto, T. (author) / Kobayashi, R. (author)

    Published in:

    Publication date :

    1982


    Size :

    13 Seiten, 34 Bilder, 4 Tabellen, 12 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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