1、Designation:B98512(Reapproved 2016)Standard Practice forSampling Aluminum Ingots,Billets,Castings and Finishedor Semi-Finished Wrought Aluminum Products forCompositional Analysis1This standard is issued under the fixed designation B985;the number immediately following the designation indicates the y
2、ear oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice describes procedures for sampling un-wrought a
3、luminum ingots,billets,castings and finished orsemi-finished wrought aluminum products to obtain a repre-sentative sample for determining chemical composition.1.1.1 Chemical compositions determined from samples ob-tained in accordance with this standard practice may differfrom the bulk chemical comp
4、osition determined from samplestaken when ingots or castings are poured.These differences canbeduetoelementalsegregationthatoccursduringsolidification,procedures that remove enriched material(forexample,ingot scalping),or procedures that remove depletedareas(for example,removal of the riser from a c
5、asting).1.1.2 Analysis of samples obtained from unwrought alumi-num ingots,billets,and castings and finished or semi-finishedwrought aluminum products can be used to determine if thepiece sampled meets The Aluminum Association,Inc.regis-tered chemical composition limits or other specified chemicalco
6、mposition limits for the alloy.Analysis of such samples shallnot supersede the analysis of samples taken during pouring ofcastings or ingots in accordance with Practices E716 andanalyzed in accordance with Test Methods E34,E607,E1251,or EN 14242 and shall not be used for determining compliancewith c
7、hemical composition requirements for an entire cast lotor part thereof.NOTE1Pieces may include ingots,forgings,coils,sheets,extrusions,castings,and so forth.A single unwrought ingot or billet may producemultiple finished or semi-finished pieces.NOTE2Certification of entire cast lots should be determ
8、ined usingsamples taken during pouring of castings or ingots in accordance withPractices E716 and analyzed in accordance with Test Methods E34,E607,E1251,or EN 14242.1.2 UnitsThe values stated in either SI units or inch-pound units are to be regarded separately as standard.Thevalues stated in each s
9、ystem 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.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresp
10、onsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2B881 Terminology Relating to Aluminum-and Magnesium-Alloy ProductsE34 Test Methods for Chemi
11、cal Analysis of Aluminum andAluminum-Base AlloysE135 Terminology Relating to Analytical Chemistry forMetals,Ores,and Related MaterialsE607 Test Method for Atomic Emission SpectrometricAnalysis Aluminum Alloys by the Point to Plane Tech-nique Nitrogen Atmosphere(Withdrawn 2011)3E716 Practices for Sam
12、pling and Sample Preparation ofAluminum and Aluminum Alloys for Determination ofChemical Composition by Spark Atomic Emission Spec-trometryE1251 Test Method for Analysis of Aluminum and Alumi-num Alloys by Spark Atomic Emission Spectrometry2.2 Other Standards:4EN 14242 Aluminum and Aluminum Alloysch
13、emicalAnalysisinductively Coupled Plasma Optical EmissionSpectral Analysis3.Terminology3.1 For definitions of terms used in this Standard,refer toTerminologies B881 and E135.1This practice is under the jurisdiction of ASTM Committee B07 on LightMetals and Alloys and is the direct responsibility of S
14、ubcommittee B07.05 onTesting.Current edition approved Nov.1,2016.Published November 2016.Originallyapproved in 2012.Last previous edition approved in 2012 as B985 12.DOI:10.1520/B0985-12R16.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at servicea
15、stm.org.For Annual Book of 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.4Available from European Committee for Standardization,Central Secretariat(CEN),rue de Stass
16、art 36,B1050 Brussels,Belgium.http:/www.cen.eu/esearch.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 4.Summary of Practice4.1 The procedures described in this practice involve thecutting and drilling of aluminum products to obtain samples forsubsequent chemical analysis in accordance with Test MethodsE34,E607,E1251,or EN 14242.5.Significance and Use5.1 Products covered by this practice are unwrought alumi-num ingots,billets,and cast
