Welding joint steel plated with excellent low-temperature flexibility

Welding joint steel plated with excellent low-temperature flexibility

  • CN 1,995,432 B
  • Filed: 12/28/2005
  • Issued: 01/18/2012
  • Est. Priority Date: 12/28/2005
  • Status: Active Grant
First Claim
Patent Images

1. a steel plate is characterized in that,Have by below the chemical constitution that constitutes as follows:

  • C;

    0.005~

    0.10%, Si;

    0.7% and do not contain 0%, Mn;

    0.5~

    2%, below the Al;

    0.1% and do not contain 0%, Ti;

    0.010~

    0.03%, and N;

    0.001~

    0.01%, remainder is Fe and unavoidable impurities;

    Microtexture is by other the organizational composition beyond ferritic and this ferritic;

    Average carbon density in these other the tissue, the carbon concentration whole with respect to steel plate is below 3.0 times;

    The area occupation ratio of its hetero-organization beyond the ferritic is 5~

    20%;

    Wherein, % is the meaning of quality %, down together.

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