Size references and an observation frame support comparison of inclusions in a prepared metallographic section. Classification depends on the specified method.
Specify optical glass or fused silica, overall dimensions, thickness, pattern-side orientation and the clear aperture. Define transmission, reflectance or optical density at the working wavelength when optical contrast is critical.
Comparison patterns help assess the apparent size, distribution or class of non-metallic inclusions in a prepared section. The chosen classification method defines how those appearances are reported.
Point fractions, intercepts and material samplingA visual class is not a chemical identification. Polishing quality, section plane and observation conditions can change appearance, so the reference must be used within the prescribed examination method.
Optical references in measuring instrumentsSize references and an observation frame support comparison of inclusions in a prepared metallographic section. Classification depends on the specified method.
Identify the applicable standard edition, magnification and inclusion categories. Reticle geometry alone does not establish compliance with a complete test method.
Grain sizing evaluates a microstructure’s grain scale; inclusion assessment evaluates non-metallic constituents. Their comparison patterns and preparation methods differ, so one named metallographic reticle should not be substituted for another solely because both contain lines or circles.
Line geometry, graduations, labels, field diameter, substrate thickness and mounting outline can be matched to the instrument. Contrast and line density should allow the reference and the specimen to remain visible together.
A patterned glass reference component with the selected graduations, outline and mounting dimensions, accompanied by the specified inspection records.
Reference layouts for non-metallic inclusion assessment.
Inclusion-assessment reticles provide size, shape or field references for microscopic metallographic evaluation.
Keep pattern category, dimensions and reading conventions consistent with the selected assessment procedure.
Method, inclusion reference shapes, dimensions, field, magnification and mounting format.
The assessment also depends on pattern class, dimensions and reading rules. Use the artwork specified by the method.