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Reliable quality

Positive Material Identification (PMI)

Accurate Material Verification for Analysis of Chemical Composition of Metals

At MarineShaft, we perform Positive Material Identification (PMI) as part of our commitment to high-quality repair and inspection services

PMI is essential when verifying the chemical composition of metals, especially in cases where material certificates are unavailable or confirmation is required before repair or welding.

Know Your Metal – Instantly and Accurately

Certified PMI with advanced XRF and LIBS technologies

We utilize both XRF (X-ray Fluorescence) and LIBS (Laser-Induced Breakdown Spectroscopy) technologies, each offering unique benefits:

  • XRF allows for non-destructive chemical analysis using X-rays. It is highly effective for identifying alloy types and verifying elemental composition without altering the material.
  • LIBS uses a laser pulse to analyze the metal surface and is particularly valuable for detecting carbon content, a critical factor in determining weldability.
When and why we use PMI

PMI testing is integrated into our workflow in several key areas:

By combining PMI testing with our other NDT methods, we ensure a comprehensive understanding of the materials we work with, which contributes to safer, more reliable maritime repairs.

  • Verifying material composition before repairs or modifications
  • Assessing metal suitability and weldability prior to welding
  • Confirming compliance with class or technical specifications
  • Supporting quality control and documentation processes

Learn more about our NDT methods.