ASTM_E_1004_-_17.pdf

Designation:E100417Standard Test Method forDetermining Electrical Conductivity Using theElectromagnetic(Eddy Current)Method1This standard is issued under the fixed designation E1004;the number immediately following the designation indicates the year 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.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 This test method covers a procedure for determining theelectrical conductivity of nonmagnetic metals using the elec-tromagnetic(eddy current)method.The procedure has beenwritten primarily for use with commercially available directreading electrical conductivity instruments.General purposeeddy current instruments may also be used for electricalconductivity measurements but will not be addressed in thistest method.1.2 This test method is applicable to metals that have eithera flat or slightly curved surface and includes metals with orwithout a thin nonconductive coating.1.3 Eddy current determinations of electrical conductivitymay be used in the sorting of metals with respect to variablessuch as type of alloy,aging,cold deformation,heat treatment,effects associated with non-uniform heating or overheating,and effects of corrosion.The usefulness of the examinations ofthese properties is dependent on the amount of electricalconductivity change caused by a change in the specificvariable.1.4 Electrical conductivity,when evaluated with eddy cur-rent instruments,is usually expressed as a percentage of theconductivity of the International Annealed Copper Standard(%IACS)or Siemens/meter(S/m).The conductivity of theAnnealed Copper Standard is defined to be 0.58 108S/m(100%IACS)at 20C.1.5 The values stated in SI units are regarded as standard.1.6 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility 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.1.7 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:2B193 Test Method for Resistivity of Electrical ConductorMaterialsE10 Test Method for Brinell Hardness of Metallic MaterialsE18 Test Methods for Rockwell Hardness of Metallic Ma-terialsE105 Practice for Probability Sampling of MaterialsE122 Practice for Calculating Sample Size to Estimate,WithSpecified Precision,the Average for a Characteristic of aLot or ProcessE140 Hardness Conversion Tables for Metals RelationshipAmong Brinell Hardness,Vickers Hardness,RockwellHardness,Superficial Hardness,Knoop Hardness,Sclero-scope Hardness,and Leeb HardnessE543 Specification for Agencies Performing NondestructiveTestingE1251 Test Method for Analysis of Aluminum and Alumi-num Alloys by Spark Atomic Emission SpectrometryE1316 Terminology for Nondestructive ExaminationsE2371 Test Method for Analysis of Titanium and TitaniumAlloys by Direct Current Plasma and Inductively CoupledPlasma Atomic Emission Spectrometry(Performance-Based Test Methodology)2.2 ASNT Documents:3SNT-TC-1A Recommended Practice for Personnel Qualifi-cation and Certification In Nondestructive Testing1This test method is under the jurisdiction of ASTM Committee E07 onNondestructive Testing and is the direct responsibility of Subcommittee E07.07 onElectromagnetic Method.Current edition approved June 1,2017.Published June 2017.Originallyapproved in 1991.Last previous edition approved in 2009 as E1004-09.DOI:10.1520/E1004-17.2For 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.3Available fromAmerican Society for Nondestructive Testing(ASNT),P.O.Box28518,1711 Arlingate Ln.,Columbus,OH 43228-0518,http:/www.asnt.org.*A Summary of Changes section appears at the end of this standardCopyright 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 ANSI/ASNT-CP-189 Standard for Qualification and Certifi-cation of Nondestructive Testing Personnel2.3 AIA Document:4NAS410 Certification and Qualification of NondestructiveT