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Recent content by Ein-no-stein

  1. Ein-no-stein

    SDSS limitation

    Dear All, As stated in ISO 21457, SDSS (25Cr) is limited to 90 to 110°C for marine atmospheric environment. The lower end of 90°C is probably based on the worst case situation at high tensile stresses and at concentrated chloride salt levels experienced when salt containing water is continuously...
  2. Ein-no-stein

    P91 Steam Piping

    Our system is operated at 60 bar and the design life is 25 years.
  3. Ein-no-stein

    P91 Steam Piping

    Thanks, metengr. Our system design pressure is really high, so P91 has a lot of creep strength benefit rather than P22. Any idea of the bolts and nuts for P91. Appreciate your input.
  4. Ein-no-stein

    P91 Steam Piping

    Dear All, P91 is a common high temperature steam piping for power generation and nuclear industry, which contains 9%Cr and 1%Mo. Is it reasonable to be used in marine environment as steam piping considering the chloride SCC (it is grey area since P91 is not recognized as stainless steel)? Any...
  5. Ein-no-stein

    Mercury Attack

    All, Thanks for your reply. I am more concerned about the amalgam corrosion rather than LME. The mercury I guess will be element "mercury" in the condensate or water phase. My thinking process is since no mercury will precipitate, there will be no LME on the anode chunk. Therefore, the anode...
  6. Ein-no-stein

    Mercury Attack

    Dear corrosion geeks, Did anyone have experience on the CP design for mercury containing oil or water system? The typical anode materials including Al, Zn, Mg are susceptible to mercury attack. If the solubility of mercury in the oil or water is high enough that no precipitation is expected, do...
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