AS 2197-1978

Method for the micrographic assessment of the non-metallic inclusion content in wrought steel

Standards Australia

More info

1 - AS 2197-1978 MICROGRAPHIC ASSESSMENT OF THE NON-METALLIC INCLUSION CONTENT IN WROUGHT STEEL
4 - PREFACE
4 - CONTENTS
5 - FOREWORD
5 - METHOD
5 - 1 SCOPE.
5 - 2 DEFINITION.
5 - 3 PRINCIPLE.
5 - 4 PREPARATION OF TEST PIECES.
5 - 5 PROCEDURE.
6 - 6 ASSESSMENT AND EXPRESSION OF RESULTS.
6 - 6.1 Worst Field Rating.
6 - 6.2 Average Field Rating.
6 - 7 TEST REPORT.
7 - APPENDIX A - SUPPLEMENTARY INFORMATION
8 - APPENDIX B - JERNKONTORET AND ASTM STANDARD DIAGRAMS
24 - APPENDIX C - EXAMPLE OF ASSESSMENT OF A FIELD
25 - APPENDIX D - TYPICAL METHOD OF RECORDING FIELD RATINGS
26 - APPENDIX E - CALCULATION OF AVERAGE FIELD RATING NUMBER

Abstract

Describes procedures for the comparison of micrographic images with standard Jernkontoret or ASTM charts. Details are given for the preparation of test pieces, test procedures, assessment of the images, expression of results and the preparation of a test report. The charts are reproduced full size. An example of assessment of a micrographic field and calculation of an average field rating number are given in appendices.

Scope

This standard describes a method for the micrographic assessment of the non-metallic inclusion content in wrought steel products by comparison with standard diagrams.
NOTES:
1. This standard does not set limits for the inclusion content of steels. These limits are normally specified in the product specification or determined by agreement.
2. Supplementary information necessary to complete the method is set out in Appendix A.