Chord Method of Evaluating Surface Microstructural Characteristics

Standard:
Reaffirmed:
  • 2012-04-05
 
  • CURRENT
Publisher:
  • SAE International
Pages:
6
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.

History:
Standard Published Revision Status
ARP1820B 2012-04-05 Latest Reaffirmed
2002-12-20 Historical Reaffirmed
1984-10-01 Historical Issued
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