High strength non-quenched and tempered free machining steel for automobile connecting bar and technological process thereof

High strength non-quenched and tempered free machining steel for automobile connecting bar and technological process thereof

  • CN 101,338,398 A
  • Filed: 08/14/2008
  • Published: 01/07/2009
  • Est. Priority Date: 08/14/2008
  • Status: Active Application
First Claim
Patent Images

1. high strength non-quenched and tempered free machining steel for automobile connecting bar, comprise:

  • C, Si, Mn, Al, P, S, Cr, V, N, Fe are elementary composition, and it is characterized in that;

    the weight percent of component is;

    C;

    0.30-0.40%, Si;

    0.50-0.70%, Mn;

    0.80-1.20%, P ;



    0.040%, S;

    0.030-0.060%, Al;

    0.010-0.040%, Cr;

    0.10-0.40%, V;

    0.10-0.30%, its surplus of N;

    0.010-0.015% are iron and inevitably are mingled with.

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