Metallographic Evaluation Services

Accutek offers metallographic inspection services at the macro and micro level.


Metallurgical Microscope
Metallography Specimen
on 1000x Microscope

Accutek’s metallographic evaluation services include microstructure and macroscopic evaluations.  Microstructure Evaluations and Macroscopic Evaluations provide useful information to designers, fabricators and manufacturers who use metals in their engineered products. Our metallurgical lab is equipped with the tools for sample preparation, sectioning, mounting, polishing and etching.

Our lab’s accreditations, including A2LA, Nadcap, GE, and Pratt & Whitney prove us to be an experienced and reliable source for your organization’s metallurgical testing needs.

Microstructure Evaluations

Accutek’s microstructure evaluations provide a high-magnification inspection of the grains in materials using microscopes, as well as other specialized equipment. Our testing facility regularly performs microstructure and grain evaluations with our metallographic microscope capable of evaluating specimens from 50X - 1500X and utilizing our color digital microphotography.

Cross Section on Screw Thread
Cross-section of
Fractured Steel Screw Thread

A metal’s grain structure contains valuable information, including:

  • Evidence of the processing history (e.g. mechanical forming, thermal treatment, surface treatment)
  • Service history (e.g. stress, wear, heat, corrosion)
  • Material properties Defects and impurities (e.g. porosity, cracks, inclusions, contamination).

Additional microstructure evaluation services include metallographic replication services available for non-destructive grain evaluation and SEM services to provide higher magnification analysis.

Macroscopic Evaluations

Accutek’s metallurgical laboratory also performs low-magnification inspection of parts or materials using stereomicroscopes, digital macrophotography and image analysis software.
A macroscopic evaluation shows evidence of processing history (e.g. mechanical forming, thermal treatment, surface treatment), service history (e.g. stress, wear, heat, corrosion), defects and impurities (e.g. porosity, cracks, wear, contamination). Our lab is outfitted with a stereoscope for evaluating specimens from 6.5X - 50X with an articulating boom stand, adjustable light sources, fiber optic point and ring illumination equipment.

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More Information

Applicable Standards

ASTM E3 - Standard Guide for Preparation of Metallographic Specimens

ASTM E112 - Standard Test Methods for Determining Average Grain Size

ASTM E407 - Standard Practice for Microetching Metals and Alloys

ASTM E883 - Standard Guide for Reflected–Light Photomicrography


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