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ASTM A892-09(2014)e1

Current Revision

Standard Guide for Defining and Rating the Microstructure of High Carbon Bearing Steels

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1.1 This guide covers the description of carbide structures in annealed high carbon bearing steels.

1.2 Included is a guide for rating steel specimens by a graded series of photomicrographs showing the incidence of certain conditions.

1.3 The reference photomicrographs are graded illustrations of annealed carbides categorized by size, network, and lamellar content (shape).

1.4 This guide is to facilitate communication and description of microstructure. It does not establish limits of acceptability. Such limits are a matter of agreement between user and producer.

1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.6 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.


This guide covers the definition and rating of the microstructure of carbide structures in annealed high carbon bearing steels. Requirements for the optical metallograph apparatus and specimen preparation including polishing and etching are detailed. The description of the reference photomicrographs (graded illustrations of annealed carbides categorized by size, network, and lamellar content (shape)) that shall be used in the evaluation and the equation that shall define the rating are given.


SDO ASTM: ASTM International
Document Number A892
Publication Date Oct. 1, 2014
Language en - English
Page Count 2
Revision Level 09(2014)e1
Supercedes
Committee A01.28
Publish Date Document Id Type View
Oct. 1, 2014 A0892-09R14E01 Revision
Oct. 1, 2009 A0892-09 Revision
Sept. 1, 2006 A0892-06 Revision
Jan. 1, 2001 A0892-88R95E01 Revision
March 1, 2020 A0892-09R20 Reaffirmation
Jan. 1, 2001 A0892-88R01 Reaffirmation