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  1. InTheField

    ASME Section II vs FFS-1 Material - State of Heat Treatment?

    Please this questions is cross posted in a couple of threads. Hi all, I have an interesting query as I have not noticed this before. Hopefully someone here has some background. OK, as an industrial boiler specialist I was putting together an in house data base which compares ASME allowable...
  2. InTheField

    ASME Section II vs. FFS-1 (API-579) Material Clarification

    Hi all, I have an interesting query as I have not noticed this before. Hopefully someone here has some background. OK, as an industrial boiler specialist I was putting together an in house data base which compares ASME allowable stress in ASME Section II, table 1a to FFS-1 calculated stresses...
  3. InTheField

    ID Fan Impeller Bolts - Thoughts?

    Ok, I know this is a long shot, but here it goes. I have an old howden ID fan on a power boiler (biomass) that has seen its fair share of erosion. The impeller to hub bolts are still in decent condition, however we are looking at having to replace the nuts. I am a fairly seasoned and...
  4. InTheField

    Historical Data David Brown Gearbox?

    Would anyone have information on an old David Brown NH-12 gear box; by old I mean 1940's vintage. I have a client in the Pulp and Paper industry that is looking to increase the horsepower on their existing gear box (and they do not have the $$ to buy and install a new gear box). I am looking...
  5. InTheField

    Fracture Toughness SA-213 T11 (1.25 Cr 1/2 Mo)

    Three part question: 1. Is there an index or list that cross references AISI materials with ASME Boiler tube materials. 2. Does anyone have the fracture toughness modulus for SA 213 T11 (I did a ballpark estimate by using leak before break criteria - but I don't trust the value). 3. I could...

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