Positive Material Identification (PMI) is a critical quality assurance process used to verify the exact elemental composition of thermowells, temperature sensors, and associated components. At Acez, we utilize advanced X-ray fluorescence (XRF) technology to confirm that your materials match the specified alloy grade before installation or deployment. This non-destructive testing method ensures material authenticity, safeguards process integrity, and prevents costly failures caused by incorrect alloy selection.
Material substitution or misidentification can have serious consequences in corrosive, high-temperature, or high-pressure environments. Even visually similar stainless steels can differ significantly in corrosion resistance, mechanical strength, and chemical compatibility.
Our PMI testing process delivers fast, accurate, and reliable alloy verification:
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X-Ray Fluorescence (XRF) Analysis – Directed X-rays excite the material surface, causing elements to emit characteristic fluorescent signatures.
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Elemental Composition Identification – Precise detection of key elements such as chromium, nickel, molybdenum, and others.
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Grade Differentiation – Clear distinction between alloys including 304 vs 316 stainless steel, Inconel 625, Monel, and other specialty metals.
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Non-Destructive Testing (NDT) – No damage to the component during inspection.
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Material Traceability Documentation – Reporting to support compliance, audits, and project specifications.
This service is especially critical for components exposed to corrosive chemicals, seawater, aggressive process fluids, or high-temperature gases, where the wrong alloy can lead to accelerated corrosion, stress cracking, and premature equipment failure. PMI testing also supports quality-critical industries requiring strict adherence to material specifications and traceability standards.
Ensure your instrumentation is built with the right material for the job. Contact Acez today to schedule professional PMI testing and guarantee the integrity of your thermowells and sensor assemblies.
