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Chord Method of Evaluating Surface Microstructural Characteristics
- Aerospace Standard
- ARP1820B
- Reaffirmed
Downloadable datasets available
Annotation ability available
Sector:
Issuing Committee:
Language:
English
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
ARP1820B has been reaffirmed to comply with the SAE five-year review policy.
Recommended Content
| Aerospace Material Specification | Heat Treatment Precipitation-Hardening Corrosion-Resistant, Maraging, and Secondary Hardening Steel Parts |
| Aerospace Material Specification | Heat Treatment of Wrought Copper Beryllium Alloy Parts |
| Aerospace Material Specification | Gas Nitriding of Low-Alloy Steel Parts |
Topic
Data Sets - Support Documents
| Title | Description | Download |
|---|---|---|
| TABLE 1 | RECOMMENDED REJECTION CRITERIA |
Issuing Committee
AMS E Carbon and Low Alloy Steels Committee
The committee of Carbon and Low Alloy Steels, AMS Committee E, shall prepare, coordinate, and revise documents related to carbon and low alloy steels technology, such as steel cleanliness and steel quality assurance sampling, through the participation of metals suppliers, users, and interested government agencies. Committee activities shall provide a forum for the cooperative interchange of ideas and experience of the participants, resulting in the publication of specifications that embody sound, established aerospace industry practices and requirements to serve the suppliers and customers of aerospace materials.
Reference
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