Norm

ASTM A247-16a

Standard Test Method for Evaluating the Microstructure of Graphite in Iron Castings

61,51

Over deze norm

Status Definitief
Aantal pagina's 13
Commissie A04.21
Gepubliceerd op 01-04-2016
Taal Engels

1.1 This test method covers the classification of graphite in cast irons in terms of type, distribution, and size by visual comparison to reference photomicrographs. This test method is intended to be applicable for all iron-carbon alloys containing graphite particles, and may be applied to gray irons, malleable irons, compacted graphite irons, and the ductile (nodular) irons.

1.2 The reference photomicrographs included in this test method are in no way to be construed as specifications. In an appropriate specification for a specific material where graphite microstructure is an important consideration, this test method may be used as a reference to define concisely the graphite microstructure required.

1.3 These reference photomicrographs are offered primarily to permit accurate reporting of microstructures of cast irons and to facilitate the comparison of reports by different laboratories or investigators.

1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. 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.

Details

ICS-code 77.140.80
Nederlandse titel Standard Test Method for Evaluating the Microstructure of Graphite in Iron Castings
Engelse titel Standard Test Method for Evaluating the Microstructure of Graphite in Iron Castings

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