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ASTM A220/A220M-99(2009)

Historical Reaffirmation

Standard Specification for Pearlitic Malleable Iron

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1.1 This specification covers pearlitic malleable iron castings for general engineering usage at temperatures from normal ambient to approximately 750°F [400°C].

1.1.1 For continuous service at temperatures up to 1200°F [650°C] design factors should be incorporated to compensate for possible property changes, as demonstrated by Marshall and Sommer and by Pearson.

1.2 Without knowledge of casting geometry and process details, no quantitative relationship can be stated between the properties of the iron in the various locations of a casting and those of a test bar cast from the same iron.

1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.


This specification covers pearlitic malleable iron castings for general. The chemical composition of the iron shall be such as to produce the mechanical properties required by this specification. Hardness test and tensile test shall be made to conform to the requirements specified. The microstructure of the pearlitic malleable iron shall consist of temper carbon nodules uniformly distributed in a matrix of ferrite, pearlite, and tempered transformation products of austenite. All castings on visual examination, shall be sound and free from obvious shrinkage and porosity.


SDO ASTM: ASTM International
Document Number A220
Publication Date May 1, 2009
Language en - English
Page Count 5
Revision Level 99(2009)
Supercedes
Committee A04.02
Publish Date Document Id Type View
Aug. 10, 1999 A0220_A0220M-99 Revision
Oct. 1, 2022 A0220_A0220M-99R22E01 Reaffirmation
Nov. 1, 2018 A0220_A0220M-99R18E01 Reaffirmation
April 1, 2014 A0220_A0220M-99R14 Reaffirmation
May 1, 2009 A0220_A0220M-99R09 Reaffirmation
Oct. 1, 2004 A0220_A0220M-99R04 Reaffirmation