Metallurgical Testing

Know Your Material’s Structure & Weaknesses

Metallurgical lab SEM/EDS analysisMetallurgical Testing typically uses microscopy to provide important information about the structure and properties of metal and alloy samples. These services are also called Metallography Evaluation, Metallographic Examination and Metallurgical Analysis.

As metals are subjected to melting, cooling and working processes, the grains and crystalline structure change. The metallography experts at Laboratory Testing Inc’s Philadelphia, PA (USA) area facility study the material’s microstructure and/or macrostructure to evaluate the effects on material properties.

Metallurgical Testing Services at LTI

The engineers in LTI’s metallurgical laboratory perform various types of microstructure and macrostructure examinations, corrosion analysis and microhardness testing. They can evaluate defects, determine structural features, identify alloys, evaluate the effects of heat treatments, and ensure materials conform to required specifications. Root cause failure analysis services are also provided when performance issues occur with metal products.

Quality Assurance
The metallurgical testing services at LTI are NADCAP and A2LA accredited and performed in accordance with ASTM and other industry specifications. Detailed internal procedures are also observed to ensure efficient order processing and the reliability of test results.

Customers receive a Certified Test Report showing the complete results of each metallography test.

Added Services
The first step in metallurgical analysis is sample preparation. Samples are prepared in our metallurgical lab using precision cutting, mounting, grinding and polishing techniques, as well as etching when required.

A scanning electron microscope (SEM-EDS) provides magnification to 300,000X for microanalysis of very small samples and areas of interest. During metallurgical testing, the findings can be documented in images using digital imaging microscopes with optical magnification capabilities from 7X to 1000X.

Range of Services

Metallographic examination is performed by LTI’s engineers using cutting-edge instrumentation and the wide range of microscopic and macroscopic examination methods, microhardness testing and more shown below:

Metallurgical testing sample preparationSample Preparation

  • Precision Cutting
  • 1.5″ & 2″ Mounts
  • Thermoset & Thermoplastic Mounting
  • Cold Mounting
  • Automatic and Hand Grinding & Polishing
  • Immersion, Swab & Electrolytic Etching

Microscopic Examinations

  • Microstructure
  • Carburization & Decarburization
  • Grain Size (ASTM E112)
  • Metallurgical AnalysisInclusion Rating (ASTM E45)
  • Plating/Coating Thickness
  • Carbide Precipitation
  • Ferrite by Point Count (ASTM E562)
  • Intergranular Attack & Oxidation
  • Alpha Case
  • Intergranular Corrosion (ASTM A262)
  • Sensitization
  • Surface Contamination
  • Nodularity, Nodule Count
  • Eutectic Melting
  • Case Depth

Macroscopic Examinations

  • Metallurgical testing microhardnessMacro-etch (ASTM E340)
  • Grain Flow
  • Weld Qualification
  • Surface Condition
  • Surface Finish

Microhardness Testing

  • Case Depth
  • Profiles
  • Knoop & Vickers Testing
  • Carburization & Decarburization
  • Surface Contamination

Additional Services

  • Failure Analysis & Report Writing
  • Scanning Electron Microscopy (SEM/EDS)
  • Digital Imaging
  • McQuaid-Ehn Grain Size
  • Welder and Procedure Qualification (in accordance with MIL & API specifications, ASME & AWS codes, ASTM & EN standards and the Pressure Equipment Directive)

Let us know about your metallurgical testing needs, so we can tell you how we can meet your requirements.

Request a Quote Contact Us

Tools & Resources

Accreditations Customer Portal Approvals Case Studies

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Quality & Convenience

  • A2LA and NADCAP accreditations
  • ISO 17025 certification
  • Same day, next-day, 2nd-day Rush Services
  • Secure Portal to track orders and get certifications
  • Fast Certified Reports sent by email

Customer Testimonials

“Thank you for allowing me to visit your facility and witness a micrometer calibration first-hand, it helped me understand the concept so much better. It is clear that LTI is a wonderful group of people to work with and they operate in a true team environment. Your staff has gone over and above the call of duty to help Superior Tube. We truly appreciate your help.”

Deb Rosenberry,
Superior Tube Inc.


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