Positive Material Identification

Positive Material Identification is an essential tool for verifying alloy grades, confirming material specifications, and preventing costly mix‑ups in fabrication and in‑service environments. At Charlton Metal Testing, we use handheld XRF analysers operated by experienced technicians, ensuring fast, accurate alloy verification across a wide range of materials and component types.

Our PMI Technicians mobilise quickly throughout the UK and internationally, supporting fabrication shops, shutdowns, construction projects, and asset integrity programmes. Whether you need to confirm incoming material, validate weld consumables, or verify in‑service components, we provide rapid on‑site analysis with clear, traceable reporting. XRF allows us to identify alloying elements and confirm grade compliance without damaging the component, making it ideal for both new construction and ongoing maintenance.

Why PMI (XRF analysis)?

• Accurate alloy grade verification for stainless steels, nickel alloys, duplex, copper alloys, and more
• Non‑destructive testing with no impact on the component surface
• Immediate results, ideal for fast decision‑making during fabrication or shutdowns
• Confirms material compliance with specifications, drawings, and purchase requirements
• Reduces risk of material mix‑ups, ensuring correct alloys are used in critical applications
• Portable and efficient, allowing testing in workshops, on site, or in difficult‑access areas
• Supports quality assurance and traceability across fabrication and in‑service inspection programmes