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JSA - JIS G 0551

Steels - Micrographic determination of the apparent grain size

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Organization: JSA
Publication Date: 21 January 2013
Status: inactive
Page Count: 54
ICS Code (Steels): 77.080.20
ICS Code (Other methods of testing of metals): 77.040.99
scope:

This Standard specifies a micrographic method of determining apparent ferritic or austenitic grain size in steels. Also, this Standard specifies the methods of revealing grain boundaries and estimating the mean grain size of the specimen with unimodal size distribution.

NOTE 1 Although grains are three-dimensional in shape, the metallographic sectioning plane can cut through a grain at any point from the grain corner to the maximum diameter of the grain. Thus, the grain sizes on the two-dimensional plane vary even in a sample with a perfectly consistent grain size.

NOTE 2 The International Standard corresponding to this Standard and the symbol of degree of correspondence are as follows.

ISO 643 : 2003 Steels - Micrographic determination of the apparent grain size (MOD) In addition, symbols which denote the degree of correspondence in the contents are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO/lEC Guide 21.

In addition, symbols which denote the degree of correspondence in the contents are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO/lEO Guide 21.

Document History

JIS G 0551
January 21, 2013
Steels - Micrographic determination of the apparent grain size
This Standard specifies a micrographic method of determining apparent ferritic or austenitic grain size in steels. Also, this Standard specifies the methods of revealing grain boundaries and...
January 20, 2005
Steel - Micrographic determination of the apparent grain size
A description is not available for this item.
February 20, 1998
Methods of Austenite Grain Size Determination for Steel
A description is not available for this item.
January 1, 1977
Method of Austenite Grain Size Test for Steel
A description is not available for this item.

References

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