ASTM_A_47_-_A_47M_-_99_2014.pdf

Designation:A47/A47M99(Reapproved 2014)Standard 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.1.Scope1.1 This specification2covers ferritic malleable castings forgeneral engineering usage at temperatures from normal ambi-ent to approximately 400C(750F).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 non-conformancewith the standard.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 Test Methods for Tension Testing of Metallic MaterialsE10 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:4Fed.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.50mm).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 ofmalleable 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 theirrelationship to those of test specimens and separate testcastings are discussed in Appendix X1.1This 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 April 1,2014.Published April 2014.Originallyapproved in 1984.Last previous edition approved in 2009 as A47/A47M 99(2009).DOI:10.1520/A0047_A0047M-99R14.2For 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 Standardization Documents Order Desk,DODSSP,Bldg.4,SectionD,700RobbinsAve.,Philadelphia,PA19111-5098,http:/dodssp.daps.dla.mil.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 7.2 Tension Test Specimens:7.2.1 The tension test specimens shall be cast to the formand dimensions shown in Fig.1 or Fig.2,in the same kind ofmolding material used for the production castings.At leastthree such specimens shall be cast from a representative ladleof iron either from each batch-melted heat or,in continuousmelting,from each 4-h pour period during which the purchas-ers castings were poured,or as otherwise agreed uponbetween manufacturer and purchaser.7.2.2 All test specimens shall be suitably identified with thedesignation of either the batch-melted heat or the pour periodof a continuous heat.7.2.3 All test specimens shall be heat treated in the sameproduction furnaces and in the same cycles as the castings theyrepresent.However,in those instances wh