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  1. PaulEng

    Suitable steels for 20% H2S environment

    Does anyone have any knowledge on suitable steels for manufacturing equipment for use in a 20% H2S environment? Normally I would use AISI 4140 limited to 22RC but not at this elevated level of H2S. Thanks and regards, Paul
  2. PaulEng

    Hydrogen Sulphide effects on low alloy steels up to 36Rc

    I design downhole tools for the petroleum industry and have a question with regard to the effect of hydrogen sulphide on low alloy steels with a hardness up to 36Rc. The normal route would be to use AISI 4140/45 with a maximum hardness of 22Rc. However, I have tools in a remote location which...

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