Tensile Testing
Metallurgical
Laboratory

4520 Willow Parkway
Cleveland, OH 44125
TF: 877-TENSILE
PH: 216-641-3290
FX: 216-641-1223

Metallography

Metallography (ASTM E3) is the study of the structure of metals, typically using the microscope to view objects. A small sample is selected carefully considering location and orientation, mounted and polished. Depending upon the material it is left unetched or etched with a variety of different etchants that bring out the structure which is viewed from 10X to 1000X. Photomicrographs (ASTM E883) are available upon request. 

Some of the structures examined are:

• Banding
• Decarb
• Grain Boundaries
• IGO/IGA
• Nodularity
• Phases- including ferrite, pearlite, martensite, austenite, etc.
• Case Depth
• Ferrite Rating
• Graphite in Castings
• Microcleanliness
• Plating

Some of the measurements made are:

• Alpha Case
• Carburization, including white layer thickness
• Decarb (Complete & Partial)
• Grain Size
• Oxidation/Corrosion
• Plating Thickness
• Total or Visual Case Depth

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Specialized testing and services include consulting, failure analysis, reverse engineering service, fastener testing, scanning electron microscopy, welder qualification, materials and process problem solving,and miscellaneous tests on non-metallic materials.

Call Tensile Testing Today At 216.641.3290 And Speak Directly With One Of Our Experts.