Metallography

3 articles in this topic.

SPECIMEN DECARBU

Measuring Decarburization and Carburization Depth in Steel

Measuring decarburization depth in steel per ASTM E1077: types, microhardness and metallographic methods, sample prep pitfalls, and AMS/ASTM acceptance specs.

Oct 25, 2026 10 min read

SPECIMEN GRAIN-S

Metallography

Grain Size Measurement: ASTM E112 Comparison and Planimetric Methods

Practical comparison of ASTM E112 comparison, planimetric and intercept methods for grain size measurement, with a selection table and Hall-Petch guidance.

Oct 21, 2026 14 min read

SPECIMEN MACRO-E

Metallography

Macro Etching for Weld Inspection: Procedure and Interpretation

Macro etching reveals weld macrostructures for quality assessment. This guide covers procedure, interpretation of fusion zone, HAZ, and defects per ASTM E340.

Oct 17, 2026 11 min read

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