acceptance criteria of PMI

  • acceptance criteria of PMI

    Posted by william on 27/11/2021 at 4:03 pm

    Dear Experts,
    in some PMI reports i found a comment written in bottom side—-the measured value of alloying elements shall be within 10 percent of the specified level——from where this tolerance has been taken? is it mentioned in code anywhere?

    jaden replied 7 months ago 2 Members · 1 Reply
  • 1 Reply
  • Positive Material Identification (PMI)


    28/11/2021 at 1:11 pm
    1 Point

    For acceptance criteria of PMI, it shall be demonstrated that materials contain the amount of alloying elements shown in the material specification. Alloys shall be deemed acceptable if the alloying elements are each within ten percent (10%) of the values.
    Welds having consumable material content that matches, or nearly matches, the base metal composition within approximately twelve and half percent (± 12.5%) of the ranges allowed in ASME Section II, Part C for each element.
    Acceptance criteria for dissimilar metal alloy welds shall be in accordance with the welding consumable material specified in the approved welding procedure. The effects of dilution between the different base metals and the filler metal shall be taken into account when determining the nominal as-deposited weld metal composition.

Reply to: william
Your information:

Start of Discussion
0 of 0 replies June 2018