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Grain size examinations from SGS – determine the average grain size of metallic materials with a range of accurate examinations.

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Grain size can be an important factor in the mechanical properties of metallic materials. Typically, a finer grain size can increase hardness and improve yield strength. We can determine the average grain size in metallic materials, such as plain carbon steels, alloy steels, stainless steels, cast irons and titanium alloys.

Why choose grain size examinations from SGS?

We offer three types of grain size examination:

  • ‘As-received’ grain size examination – we prepare metallographic specimens from the sample without any additional treatment. For example, stainless steels or carbon/alloy steels that haven’t been quenched
  • Austenitic (oxidation) grain size examination – we prepare carbon/alloy steel metallographic specimens from the sample by heat treating the specimens and quenching them in water. This is typically performed on quenched and tempered carbon/alloy steels with high carbon content to bring out grains that otherwise could not be detected in the quenched condition 
  • McQuaid-Ehn (carburizing) grain size examination – we prepare carbon/alloy steel metallographic specimens from the sample by surrounding the specimens with a carburizing compound, heat treating them, and slowly furnace cooling them. This method is utilized mainly for quenched and tempered carbon/alloy steels with low carbon content

Precise grain size examinations from a leading metallurgical services provider

As a world-leading provider of metallurgical services we offer unrivaled experience and expertise in grain size examinations. Our state-of-the-art laboratory offers grain size examinations using ASTM E112 as our accredited test specification, and an optical microscope.

To discuss your grain size examination requirements, contact us today.