ASTM_A_47_-_A_47M_-_99_2018e1.pdf

Designation:A47/A47M99(Reapproved 2018)1Standard Specification forFerritic Malleable Iron Castings1This standard is issued under the fixed designation A47/A47M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1NOTEFootnote 4 was updated editorially and Footnote 5 was added editorially in November 2018.1.Scope1.1 This specification2covers ferritic malleable castings forgeneral engineering usage at temperatures from normal ambi-ent to approximately 400 C 750 F.1.2 No precise quantitative relationship can be stated be-tween the properties of the iron in various locations of the samecasting and those of a test specimen cast from the same iron(see Appendix X1).1.3 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in nonconformancewith the standard.1.4 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:3A153/A153M Specification for Zinc Coating(Hot-Dip)onIron and Steel HardwareA247 Test Method for Evaluating the Microstructure ofGraphite in Iron CastingsA644 Terminology Relating to Iron CastingsE8/E8M Test Methods for Tension Testing of Metallic Ma-terialsE10 Test Method for Brinell Hardness of Metallic MaterialsE18 Test Methods for Rockwell Hardness of Metallic Ma-terialsE140 Hardness Conversion Tables for Metals RelationshipAmong Brinell Hardness,Vickers Hardness,RockwellHardness,Superficial Hardness,Knoop Hardness,Sclero-scope Hardness,and Leeb Hardness2.2 Military Standard:4MIL-STD-129 Marking for Shipment and Storage2.3 Federal Standard:5Fed.Std.No.123 Marking for Domestic Shipment(CivilianAgencies)3.Terminology3.1 DefinitionsDefinitions for many terms common toiron are found in Terminology A644.4.Classification4.1 Castings ordered and produced under this specificationare classified under the following grades based on tests onseparately cast test bars.Separately cast test bars shall bepoured from the same lot of iron as the castings they representand shall be heat treated with those castings except as providedin 7.2.3.4.1.1 Grade 32510 Grade 22010:4.1.1.1 The first three digits of the grade designation indi-cate the minimum yield strength(100 psi MPa),and the lasttwo digits indicate the minimum elongation(%in 2 in.50 mm).5.Ordering Information5.1 The purchase order for castings ordered under thisspecification shall state the specification designation,the yearin which the specification was issued,and the grade of1This specification is under the jurisdiction of ASTM Committee A04 on IronCastings and is the direct responsibility of Subcommittee A04.02 on Malleable andDuctile Iron Castings.Current edition approved Nov.1,2018.Published November 2018.Originallyapproved in 1984.Last previous edition approved in 2014 as A47/A47M 99(2014).DOI:10.1520/A0047_A0047M-99R18E01.2For ASME Boiler and Pressure Vessel Code applications see related Specifi-cation SA-47 in Section II of that code.3For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.4Available from General Services Administration Vendor Support Center,https:/vsc.gsa.gov/administration/files/MIL-STD-129R.pdf.5Available from General Services Administration Vendor Support Center,https:/vsc.gsa.gov/administration/files/Compliance-with-FED-STD-123H.pdf.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 malleable iron to be supplied.Any option or special additionsto the basic requirements of this specification shall be clearlyand fully stipulated.6.Chemical Composition6.1 The chemical composition of the iron shall be such as toproduce the structural and mechanical properties required bythis specification.7.Mechanical Properties7.1 Factors influencing the properties of castings and theirr