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This standard is issued under the fixed designation A ; the 2 For referenced ASTM standards, visit the ASTM website, , or. ASTM A()e1 Standard Guide for Defining and Rating the Microstructure of High Carbon Bearing Steels Scope

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A number in parentheses indicates the year of last reapproval.

A superscript epsilon e indicates an editorial change since the last revision or reapproval. It does not establish limits of acceptability.


Such limits are a matter of agreement between user and producer. 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.


The size of the sample shall be negotiated between the user and the producer. It may be a full cross section but should not be too large for practical handling in the polishing operation.

ASTM A892 – 09(2014)e1

Current edition approved Dec. When critical or detailed analysis of structures is required, the recommended etchant is Picral saturated.

Higher numbers indicate a larger number or greater degree of severity of the category being rated. Reported counts are the average of three measurements.

Procedure for Evaluation 6. Select xstm eld which is representative of the category to be graded and compare it to the photomicrographs which are part of this method.

The rating will be the number of that photo which most closely resembles the appearance of the specimen. A separate eld may be used for each category or a single eld may be rated for more than one category.

An example rating is: Users of this standard atsm expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every ve years and if not revised, either reapproved or withdrawn.


Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM Headquarters.

Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.