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  1. Cormet

    Dissimilar Metal Weld Qualification

    For a weld P1 - P8 plates (fillet weld & same thickness) is it mandatory to have chemical composition of test coupon in PQR? Also, what part in Section IX says about need to list also hardness of test coupon? Service is non-corrosive and it is a tank. Thanks, Cormet
  2. Cormet

    Pipe Labelling

    Hello, Is it mandatory in the US to place labels to ID service & flow on pipes in Polyethylene plants? Thanks
  3. Cormet

    Ethylene Furnace tubes contamination

    EdStainless Yes, these are centrifugally cast tubes.
  4. Cormet

    Ethylene Furnace tubes contamination

    Colleagues, Alloy is 35Cr45Ni (no ASTM spec to reference). 1. Furnaces are being erected and it was noticed that some of the tubes have multiple rust spots, typically these results from carbon steel contamination. I'd like to hear your expert opinions on expected damage mechanisms if carbon...
  5. Cormet

    corrosion by isobutane

    you've mentioned that if water is present, then it is corrosive. where can I find these corrosion rates publised?? I've already tried CORSUR (NACE) w/o luck!!!!!! Thanks, Cormet
  6. Cormet

    corrosion by isobutane

    Pure Isobutane. No other chemicals present.
  7. Cormet

    corrosion by isobutane

    where can i find corrosion rates isobutane Vs. carbon steel and isobutane Vs. austenitic stainless steel?? Temp : 100F Press : 225 psia Cormet
  8. Cormet

    Hardness vs. Elastic Modulus

    I've seen Hardness Vs. Tensile Stregth (for carbon steel) i API RP 579. Cormet
  9. Cormet

    Best Material for Marine Exposure + High Strength

    Best option is Duplex stainless steel type 2205. Be advised that if component is going to be used in pressure containing part or vessel, ASME code limit use of duplex to less than 600F.
  10. Cormet

    Refinery Alkylation Unit - Metallurgy Upgrade

    Does anybody have reported Corrosion rates of Isobutane in Carbon steel?? Where can i find such data?? Thanks, Cormet

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