Diphasic stainless steel

Diphasic stainless steel

  • CN 101,294,262 A
  • Filed: 03/21/2008
  • Published: 10/29/2008
  • Est. Priority Date: 03/21/2008
  • Status: Active Application
First Claim
Patent Images

1. , a kind of duplex stainless steel is characterized in that this stainless steel weight percentages of components is:

  • C+N≤

    0.12%;

    Si≤

    1.0%;

    Mn≤

    6.0%;

    P≤

    0.04%;

    S≤

    0.01%;

    Ni 3.0~

    7.0%;

    Cr 20.0~

    28.0%;

    Mo 0~

    2.0%;

    W 0~

    2.0%;

    Ag-Cu binary master alloy 0.10~

    1.0%;

    All the other are Fe and unavoidable impurities;

    Wherein the Cr equivalent is 3.0~

    3.8 with the ratio (Creq/Nieq) of Ni equivalent, and Creq and Nieq press following formula and determine;

    Creq=



    Cr+%

    Mo+1.5×



    Si+0.73×



    W;

    Nieq=



    Ni+30×

    (%

    C+%

    N)+0.5×



    Mn+0.3×



    Cu。

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