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BS 4490:1989

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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Methods for micrographic determination of the grain size of steel

Available format(s)

Hardcopy

Superseded date

10-03-2003

Language(s)

English

Published date

30-06-1989

€285.14
Excluding VAT

Foreword
Committees responsible
Methods
Section one. General
1. Scope
2. Definitions
3. Symbols
4. Principle
5. Apparatus
6. Preparation of the test surface
Section two. Revealing the grains
7. Revealing the grains in the as-received conditions
8. Revealing the parent austenite grains
Section three. Measurement of the grain size
9. Measurement of grain size by an index
10. Determination of grain size by lineal analysis
11. Test report
Appendices
A. Etching reagents
B. Bechet-Beaujard picric acid method
C. Pro-eutectoid ferrite method
D. Bainite or gradient quench method
E. Kohn method by controlled oxidation
F. McQuaid-Ehn method by carburization
G. Determination of grain size: AFNOR standard sheets
H. Determination of grain size: ASTM standard sheets
J. Snyder-Graff method
Tables
1. Symbols
2. Relationship between indices for the usual
    magnification
3. Evaluation of number of grains as a function of
    various parameters, for GE
4. Evaluation of grains as a function of various
    parameters, for GA
Figures
1. Evaluation of the number of grains in an area
    enclosed by a circle
2. Measurement grid for the intersected segment method
3. Evaluation of the number of grains (twin grains)

Determination of ferrite or austenite grain sizes and the size of grains containing aggregate phases, e.g. pearlite. Methods for revealing the grain and for estimating the mean size of the microstructural constituent.

Committee
ISE/1
DocumentType
Standard
Pages
0
PublisherName
British Standards Institution
Status
Superseded
SupersededBy
Supersedes

Standards Relationship
EURONORM 103 : 1971 Similar to
ISO 643:2012 Similar to

NFA 04 102 : 1980 IRON AND STEEL PRODUCTS - DETERMINATION OF THE FERRITIC OR AUSTENITIC GRAIN SIZE OF STEEL
EURONORM 103 : 1971 MICROSCOPIC DETERMINATION OF THE FERRITE OR AUSTENITIC GRAIN SIZE OF STEELS
ISO 643:2012 Steels Micrographic determination of the apparent grain size

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