ASTM B931-14
Standard Test Method for Metallographically Estimating the Observed Case Depth of Ferrous Powder Metallurgy &40;PM&41; Parts
- Standard No.
- ASTM B931-14
- Release Date
- 2014
- Published By
- American Society for Testing and Materials (ASTM)
- Status
- Replace By
- ASTM B931-14(2018)
- Latest
- ASTM B931-23
- Scope
5.1 The engineering function of many PM parts may require an exterior portion of the part to have a hardened layer. Where case hardening produces a distinct transition in the microstructure, metallographic estimation of the observed case depth may be used to check the depth to which the surface has been hardened.
1.1 A metallographic method is described for estimating the observed case depth of ferrous powder metallurgy (PM) parts. This method may be used for all types of hardened cases where there is a discernible difference between the microstructure of the hardened surface and that of the interior of the part.
1.2 With the exception of the values for grit size for which the U.S. standard designation is the industry standard, the values stated in SI units are to be regarded as standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
ASTM B931-14 Referenced Document
- ASTM B243 Standard Terminology of Powder Metallurgy
- ASTM E177 Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
- ASTM E407 Standard Practice for Microetching Metals and Alloys
ASTM B931-14 history
- 2023 ASTM B931-23 Standard Test Method for Metallographically Estimating the Observed Case Depth of Ferrous Powder Metallurgy (PM) Parts
- 2014 ASTM B931-14(2018)e1 Standard Test Method for Metallographically Estimating the Observed Case Depth of Ferrous Powder Metallurgy (PM) Parts
- 2014 ASTM B931-14(2018) Standard Test Method for Metallographically Estimating the Observed Case Depth of Ferrous Powder Metallurgy (PM) Parts
- 2014 ASTM B931-14 Standard Test Method for Metallographically Estimating the Observed Case Depth of Ferrous Powder Metallurgy &40;PM&41; Parts
- 2009 ASTM B931-09 Standard Test Method for Metallographically Estimating the Observed Case Depth of Ferrous Powder Metallurgy (P/M) Parts
- 2003 ASTM B931-03 Standard Test Method for Metallographically Estimating the Observed Case Depth of Ferrous Powder Metallurgy (P/M) Parts
