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SAE ARP1820C
Chord Method of Evaluating Surface Microstructural Characteristics
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STANDARD published on 1.6.2026
The information about the standard:
Designation standards: SAE ARP1820C
Publication date standards: 1.6.2026
SKU: NS-1274899
Country: American technical standard
Category: Technical standards SAE
Annotation of standard text SAE ARP1820C :
This practice provides a method for evaluating microhardness and microstructure very close (0.002 inch (0.051 mm) or less) to the surface of a disk specimen. Specific accept/reject criteria for partial decarburization (3.7.1), inadvertent carburization/nitriding (3.7.3), total decarburization/intergranular oxidation (3.8), and other characteristics evaluated are to be found in the applicable specification where this ARP is referenced.
SUBFILE: Aerospace
TYPE OF DOCUMENT: Aerospace Standard
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