its what inside that matters

The microstructure of a material influences its mechanical properties, wear and corrosion resistance, and other  characteristics.   Microstructural analysis is commonly performed using light microscopy.  Photography is used to document the results of the analysis.

One of the most important uses of metallography is to characterize and rate certain microstructural features including:

GRAIN SIZE—Metals consist of numerous small crystals called grains.  The grain size affects the mechanical properties of metals, with finer grained structures being optimum. Grain size measurement is conducted in accordance with ASTM E112 and other industry standards.

INCLUSION RATING—Inclusions are non-metallic impurities found in steels including oxides, sulfides, and silicates.  Inclusions can have a detrimental effect on ductility, toughness, and other properties.  Inclusion rating is conducted in accordance with ASTM E45 and other standards.

CASE DEPTH—The case depth produced by carburizing, nitriding, and other surface hardening processes can be accurately measured using microhardness testing and other methods.

We work with qualified labs to provide metallographic analysis of all types.  We are experienced in interpreting metallographic images.  Contact us for more information.