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ARP1820C - Chord Method of Evaluating Surface Microstructural Characteristics

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Document Number: ARP1820C
Project Initiation: 2017-03-17 07:19:49.0
Project Number:
Revision Number: C
Sponsor Name: James G. Conybear
Title
Chord Method of Evaluating Surface Microstructural Characteristics
Scope
This practice provides a method of evaluating microhardness and microstructure very close to the surface of a disk specimen. It is useful for process control in heat treatment of steel parts to detect nitriding and carburization as well as decarburization and excessive intergranular oxidation. It also may be valuable for other evaluations, e.g., plated coatings and other materials.
Rationale
Five Year Review
Recent Activity
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