Automakers are putting ever more emphasis on their environmental and energy efficiency efforts through improving the fuel consumption of vehicles. One way of saving energy is to reduce the total weight of the vehicle by using high strength steel. Hyundai steel developed a new 780 MPa grade of hot rolled high strength steel with excellent stretch flange formability in which the ferrite matrix is strengthened by ultra-fine, nano-sized precipitates. The material developed in our study met the material requirement of OEM's material specification with 780 MPa tensile strength and 55% hole extension ratio. Steel grades of 780 MPa were applied to develop front lower control arm for automotive chassis. In order to evaluate the performance of materials, primary design, durability and strength analysis of materials were prepared in collaboration with suppliers. Prototype of front lower control arm was fabricated and durability test and strength test were performed. Both of them satisfied the target.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    A Development of 780MPa Hot Rolled High Strength Steel for Application to Automotive One-Piece Front Lower Control Arm


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE 2013 World Congress & Exhibition ; 2013



    Publication date :

    2013-04-08




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Application of 590/780MPa Grade TRIP Steel to Body-in-White

    Dykeman, James / Tanae, Takahiro | SAE Technical Papers | 2006


    Development of cold-rolled high-strength formable steel for automotive applications

    Bhagat, A.N. / Singh, Avtar / Gope, N. et al. | Tema Archive | 2010


    High strength cold-rolled steel sheet for automotive applications

    Olsson, K. / Nilsson, K.I. | Tema Archive | 1988


    Development of ultra-high-strength cold-rolled steel sheets for automotive use

    Nonaka, T. / Taniguchi, H. / Goto, K. et al. | Tema Archive | 2003