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1.1 A metallographic method is described for estimating the observed case depth of ferrous powder metallurgy (P/M) 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 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
B243 Terminology of Powder Metallurgy
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E407 Practice for Microetching Metals and Alloys
ICS Number Code 77.160 (Powder metallurgy)
UNSPSC Code 23271805(Iron powder)
ASTM B931-03, Standard Test Method for Metallographically Estimating the Observed Case Depth of Ferrous Powder Metallurgy (P/M) Parts, ASTM International, West Conshohocken, PA, 2003, www.astm.orgBack to Top