Positive Material Identification

Verification Process

Handheld analyzers utilize X-ray fluorescence or optical emission spectroscopy to determine the elemental composition of the metal. During positive material identification, the technician scans the component surface to read the percentages of chromium, nickel, and molybdenum. This non-destructive test takes only seconds per point.

It generates an immediate read of the alloy grade.

Quality Control

Alloy mix-ups are eliminated before the construction phase is finalized and the system is pressurized. When a supplier ships carbon steel instead of a high-alloy stainless steel, this field test detects the error immediately. It prevents premature corrosion or failure in service.

The testing is often mandated for ninety-five to one hundred percent of alloy weld joints. This documentation is compiled into the final mechanical completion dossier.

Operational Limit

Lightweight elements like carbon cannot be accurately detected by standard hand-held X-ray fluorescence units. Such cases require optical emission spectroscopy using an argon purge.