Low alloy steel with a high yield strength and high sulphide stress cracking resistance

Low alloy steel with a high yield strength and high sulphide stress cracking resistance

  • CN 102,245,790 A
  • Filed: 11/25/2009
  • Published: 11/16/2011
  • Est. Priority Date: 12/09/2008
  • Status: Active Application
First Claim
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1. low alloy steel, it has high-yield strength and outstanding sulfide stress cracking (SSC) performance, is characterised in that it contains (by weight):

  • C;

    0.2% to 0.5%Si;

    0.1% to 0.5%Mn;

    0.1% to 1%P;

    0.03% or littlerS;

    0.005% or littlerCr;

    0.3% to 1.5%Mo;

    0.3% to 1%Al;

    0.01% to 0.1%V;

    0.1% to 0.5%Nb;

    0.01% to 0.05%Ti;

    0 to 0.01%W;

    0.3% to 1%N;

    0.01% or littler,All the other chemical constitutions of described steel by Fe and in the manufacturing of steel or castingprocesses impurity that produce or essential or residuum constituted.

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