ISO 643:1983

Steels -- Micrographic determination of the ferritic or austenitic grain size

Specifies the methods for revealing the grain and for estimating the mean size of the grain revealed. Includes a counting method (annex A) and determination of grain size by using of standard charts (annnexes B and C) taken from an AFNOR Standard and an ASTM document, respectively.


General information

  • Status :  Withdrawn
    Publication date : 1983-09
  • Edition : 1
  • :
    ISO/TC 17/SC 7
    Methods of testing (other than mechanical tests and chemical analysis)
  • 77.040.99
    Other methods of testing of metals

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