High-strength stainless steel tube with excellent toughness and manufacturing method thereof

High-strength stainless steel tube with excellent toughness and manufacturing method thereof

  • CN 103,320,707 A
  • Filed: 06/20/2013
  • Published: 09/25/2013
  • Est. Priority Date: 06/20/2013
  • Status: Active Application
First Claim
Patent Images

1. the high strength stainless steel pipe of a good-toughness is characterized in that, its chemical element quality percentage composition is:

  • C:



    0.06%;

    Cr:

    17~

    20%;

    Ni:

    3~

    6%;

    Mo:

    1.5~

    3.5%;

    Si:

    0.1~

    0.8%;

    Mn:

    0.05~

    0.6%;

    N:

    0.01~

    0.05%;

    Al:



    0.1%;

    And Cu element;

    Nb, V, Ti element at least one of them;

    Wherein Cu, Nb, V, Ti element satisfy;

    0.29<

    Cu/3.25+ (Nb+Ti)/17+V/2.4<

    0.74, and Nb+V+Ti<

    0.2%;

    Surplus is Fe and other inevitable impurity.

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