1、Designation:A532/A532M10(Reapproved 2014)Standard Specification forAbrasion-Resistant Cast Irons1This standard is issued under the fixed designation A532/A532M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision,the year of last revision
2、.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 specification covers a group of white cast ir
3、ons thathave been alloyed to secure high resistance to abrasive wear inthe applications of the mining,milling,earth-handling,andmanufacturing industries.1.2 Simple and low-alloy white cast irons that consistessentially of iron carbides and pearlite are specifically ex-cluded from this specification.
4、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
5、standard.2.Referenced Documents2.1 ASTM Standards:2E10 Test Method for Brinell Hardness of Metallic MaterialsE18 Test Methods for Rockwell Hardness of Metallic Ma-terialsE92 Test Method for Vickers Hardness of Metallic Materials(Withdrawn 2010)3E350 Test Methods for Chemical Analysis of Carbon Steel
6、,Low-Alloy Steel,Silicon Electrical Steel,Ingot Iron,andWrought IronE351 Test Methods for ChemicalAnalysis of Cast IronAllTypes3.Ordering Information3.1 Orders for material in this specification should includethe following information:3.1.1 Quantity,3.1.2 Specification number,class,and type,3.1.3 De
7、scription of the casting,pattern number,or drawing,3.1.4 Chilling of the casting,if required(see 4.2),3.1.5 Heat treat condition(see 5.1),3.1.6 Hardness level,if supplied hardened or hardened andstress relieved,and3.1.7 Hardness method,Brinell,Rockwell,Vickers(seeSection 9).If the hardness method is
8、 not specified,it shall beat the manufacturers option.4.Method of Manufacture4.1 These alloys may be made by any suitable meltingprocess.4.2 If the casting is to be chilled or otherwise speciallytreated on any portion,the inquiries and the purchase ordershall so state and a properly marked drawing o
9、f the casting willaccompany both the inquiry and the purchase order.5.Heat Treatment5.1 The casting will be supplied in one of the followingconditions:5.1.1 As-cast,5.1.2 As-cast and stress relieved,5.1.3 Hardened,5.1.4 Hardened and stress relieved,or5.1.5 Softened for machining.5.2 Unless otherwise
10、 specified by the purchaser,the manu-facturer shall supply the castings in the heat treatment hedeems best for the application.5.3 If the heat treatment specified for delivered condition isnot that of final use,it shall be the responsibility of thepurchaser to provide the additional heat treatment.5
11、.4 Class II and Class III alloys are frequently ordered in theannealed condition with a maximum hardness of 400 HB.Aftermachining operations are performed the castings may then behardened.If both annealing and machining are to be performedby the manufacturer,as specified in the inquiry,contract,oror
12、der,the purchaser may then specify delivery in the hardenedcondition.If the purchaser specifies delivery in the annealed1This specification is under the jurisdiction of ASTM Committee A04 on IronCastings and is the direct responsibility of Subcommittee A04.01 on Grey and WhiteIron Castings.Current e
13、dition approved Oct.1,2014.Published October 2014.Originallyapproved in 1965.Last previous edition approved in 2010 as A532/A532M 10.DOI:10.1520/A0532_A0532M-10R14.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of
14、 ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 conditio
15、n,subsequent hardening(and stress-relief,if it isdesired)is the responsibility of the purchaser.6.Chemical Composition6.1 The composition of the metal of a class and typeproduced under this specification shall fall within the rangesprescribed in Table 1 for that class and type.6.2 Spectrographic,X-r
16、ay,or wet chemical laboratory tech-niques are acceptable for routine and control determinations,but shall be standardized against,and give essentially the sameresults as,the umpire methods specified in 6.3 of this specifi-cation.6.3 In case of dispute,umpire determinations of the chemi-cal analysis of the metal shall be made using ASTM standardmethods detailed as follows:6.3.1 The following is in accordance with Test MethodsE351:6.3.1.1 Carbon,Total by the Combustion GravimetricMethod.6.3.1.2 Ch
