Positive Material Identification (PMI) provides alloy Chemistry and grade ID information instantly using a handheld analyzer without having to move, alter, or damage the material.
PMI is also used to ensure that the Parent material in vessels and pipe material is composed of the correct composition (i.e., 304 or 316L) and once the component is welded that the correct filler material was used. PMI also ensures that the base material of piping and vessels meets the design specification.