1、INTERNATIONA1.STANDARDISO2566-1editionThird2021-12Stee1.Conversionofe1.ongationva1.ues一f闻nand1.ow-a1.1.oystee1.sAcierConversiondesVa1.eUrSd1.a1.1.on(fement一Par1.ie1:AciersaucarboneetQCierSfaib1.ementa1.1.iesReferencenumberISO2566-1:2021(E)ISO2021COPYRIGHTPROTECTEDDOCUMENTISO2021IUirhM*hedbdi1.iUedot
2、herwiseupdhi.or啪UIBndttaeDmkfifiHipB1.andonnet8CH-1214Vernier,GenevaPhone：M1.22749O1.11觥曲ite：图洲跳触OQrgPub1.ishedinSwitzer1.andContentsForewordivIntroductionv2 Scope13 Normativereferences1Terms,definitionsandsymbo1.s13.1 Termsanddefinitions14 32Symbo1.s.25 Basicformu1.a26 gauge1.engthtoanotherproporti
3、ona1.gaugersionfromonenonproportiona1.gauge1.engthtoanothernon-proportid1.a1.魁战F妮京栩.群外麻济弗1翻制歼漩f搬郴的用O1.hernOMPrO和田加a1.gauge1.engthfortestpiecesofdifferentcross-sectiona1.areas.Conversionfromaproportiona1.gauge1.engthtoanon-proportiona1.gauge1.engthGenera1.Conversionfactorsfromtonon-proportiona1.gauge
4、1.ength2633UseofFiguresBib1.iographyForewordISO(theInternationa1.OrganizationforStandardization)isawor1.dwidefederationofnationa1.standardsttiugh(ISOtnnfmkaibif1.in11冏wcekuWPttf1.pbBcgbody5tf1.r三dtiJMii6tandrik.f(nowhb(arediacommitteehasbeenestab1.ishedhastherighttoberepresentedonthatcommittee.Inter
5、nationa1.organizations,governmenta1.andnon-governmenta1.,in1.iaisonwithISO,a1.sotakepartinthework.ISOco1.1.aboratesc1.ose1.ywiththee1.ectrotechnica1.standardization.Internationa1.E1.ectrotechnica1.Commission(IEC)ona1.1.mattersofTheproceduresusedtodeve1.opthisdocumentandthoseintendedforitsfurthermain
6、tenanceare。质限岫1搬Of1.SO/IEC出陶曲俺辆1.b槐3龄&用战螂能M蝌陶曲er%srdance&Fhthecdito11a1.ru1.esoftheISO/IECDirectives,Part2(seewww.so.rgdruc1.ivcs).Rionri颜sd隘丽n隔嗯解8股ns冲神出飘游做热贤忖doc1.三r如nQ银信.subjectofanypatentrightsidentifiedduringthedeve1.opmerUW4iouwMM41.beintheIntroductionand/orontheISO1.istofpatentdec1.arationsrec
7、eived(seewww.iso.org/patents).Anytradeusedinthisconstitutenameendorsement,documentisinformationgivenfortheconvenienceofusersanddoesnotForanexp1.anationofthevo1.untarynatureofstandards,themeaningofISOspecifictermsandU明泉加OrRan俱feg悯SaSS忠!S窿inwJ憎ft或OnBar池部Udead焦es地ww.isO.orgiso/foreword.htm1唧柳icaMo/帔吩Va
8、脚痛叫SampF闹懈幕曲痴曲述明JCIa防助。JM98H口明他的仍,把”/EuropeanCommitteeforStandardization(CEN)Technica1.CommitteeCEN/TC4S9SC1.rTestmethodsforstee1.(otherthanchemica1.ana1.ysis),inaccordanceWiththeAgreementontechnica1.cooperationbetween【SOandCEN(ViennaAgreement).Thisthirdeditioncance1.sandrep1.acesthesecondedition(IS
9、O2566-1:1984),ofwhichitconstitutesaminorrevision.Thechangesareasfo1.1.ows: comp1.eteeditoria1.revision; Tab1.es2to5havebeenrenamedduetoreorderinginordertofo1.1.owthe1.ogica1.f1.owOfinformationofthisdocument; CMt拓SihMibftDrestruauredintofoursub-c1.ausesinordertofo1.1.owthe1.ogica1.f1.owofinformationA
10、1.istofa1.1.partsintheISO2566seriescanhefoundontheISOwebsite.AjWiMbf1.比爆他由暗Is1.ftR1.iusthiscahU用He1.Hbe4Sffinationa1.standardsbody.AIntroductionSevera1.differentgauge1.engthsarep11mon1.yinuseforthedeterminationofpercentagee1.ongationofstee1.sintensi1.etesting.Fixedgave1.engthsof50mm,80mm,100mmand200
11、mmareused;proportiona1.gauge1.engthsOfkSoarea1.sousedforf1.atandroundtestpieces,wherekmaybeoneofanumberofva1.es1i.e.4;5,65;8,16or11,3Theva1.ue5,6S5isadoptedastheinternationa1.1.ypreferredproportiona1.gauge1.ength.Arisingfromthischoiceandtheexistenceofspecificationsstipu1.atingminimumpercentagee1.ong
12、ationsondifferentgauge1.engths,agrowingneedhasbeenevidentforanInternationa1.Standardthatcou1.dbeinc1.uj!aWsftes三4AWYft三sofVing.Nmm2andinthehot-ro1.1.ed,hot-ro1.1.edandnorma1.izedorannea1.edconditions,withTheseconversionsarenotapp1.icab1.eto:a) co1.dreducedstee1.s;b) quenchedandtemperedstee1.s;c) aus
13、teniticstee1.s.q-Theseconversionsarenotapp1.icab1.ewhenthegauge1.engthexceeds25Sqorwherethewidthto2thfcfativeHpedMrg/gauge1.ength1.engthofthepara1.1.e1.portionofthetestpieceusedformeasurementofstrainNote1toentry：Thetermishereafterusedinthisdocumenttodenotetheorigina1.gauge1.ength,1.d,markedonye3stpi
14、eceforthedeterminationofpercentagee1.ongationafterfracture,A.proportiona1.gauge1.engthgauge1.engthhavingaspecifiedre1.ationtoI1.wsquarerootofthecross-sectiona1.area,forexamp1.e5.65SoISO2021-A1.1.rightsreserved3.1.3non-propo-tiona1.gauge1.engthgauge1.ength(3.1.1)notspecifica1.1.yre1.atedtothecross-se
15、ctiona1.areaofthetestpiece,usua1.1.yexpressedinagivendimension,forexamp1.e50mm3.2 Symbo1.s,Percentagee1.ongationafterfractureonagauge1.ength,obtainedontestArdPercentagee1.ongationonadifferentgauge1.ength,requiredbyconversionDiameteroftestpiecegoOrigina1.gauge1.engthOrigina1.cross-sectiona1.areaoftes
16、tpiece4Basicformu1.aThedatacontainedinthisdocumentarebasedontheO1.iverformu1.a(i,whichisnowwide1.yusedforsuche1.ongationconversions.TheO1.iverformu1.acan,inasimp1.ifiedform,beexpressedasformu1.a(I):o,.nsthea三魅fiftti的峭疝I酬】&谕脚时Cy“刚AWdtt触蒯iuseacceptancepurposeson1.ybyagreementbetweenthecustomerandsupp1
17、ier.Inspeci11cation.disputerthee1.ongationsha1.1.bedeterminedonthegauge1.engths1.atedinthere1.evant6Conversionfromoneproportiona1.gauge1.engthtoanotherproportiona1.gauge1.engthSimp1.emu1.tip1.yingfactorsbasedontheIbrpiu1.aareusedforsuchconversions,andthere1.ationshipsbetweensevera1.ofthemorewide1.y
18、usedproportiona1.auge1.engthsareven4nTab1.e1.Detai1.edconversionsofe1.ongationsobtainedon4Soto5,65SoaregiveninTab1.e2.Tab1.e1Conversionfactors:Proportiona1.gauge1.engthConversionFactorforconversionto:from:4So5,65508,16So11.3Sodd450S,6558.16S011,35。dtdd,5-X1.1491.0000,8630,7591,0931,0000.8281.1491.00
19、00.8630,7591.0931.000Act&a1.e1.onga*1.tion(%)measuredonTa1.(2E1.oi891.207c。嵋。nding32假ation(%RM,65S01207100Igationva1.uesaon5,65SocdhMkndingtothoseobtainedon4SOgaugeConversionFactorforconversionto:from:4SOS.65508.16501.1.,35dd4So5,655o8,1.6S0113SodjFactor0.81,1491,0000.8630.7591.0931.0000,828,Va1.ues
20、roundedtonearestwho1.enumber.Actua1.cionCrwvj*nfromonenon-profcfBFViBVifttW1fnJi5fiSernnpropu11ti4Sauge1.engthfortestpiecesofequa1.cross-sectiona1.areaTheconversionot&现I1.D1.munda20ft30e1.ongationva1.uesOfdifferentfixedgauge1.engthsontestpiecesofequa1.cross-niMh1.ySmiVrib1.fedtors.Conversionfactorsf
21、orgauge1.engthsof50mm,80mm,2627282930303132330.828ISO2021-A1.1.rightsreserved4to4maybeuseniorconversionsbetween5,655oand50mm,5,655oand200mm,45and50mmand4S(Iand200mmgauge1.engths,respective1.y.EXAMP1.Ea)b)Tofindtheequiva1.ente1.ongationonS,65S)and4S(toane1.ongationof21%ona200mmgauge1.engthofa25mmx12,
22、5mmtestpieceofcross-sectiona1.area312,3mnu.Theintersectionofthisordinatewiththeabscissarepresentingane1.ongationof21%ona200tngaue1.ength1.iesonthes1.oping1.inerepresentingane1.ongationof28%on5.65Sbon4guwF2andatapositionre1.a1.iv6ohes1.oping1.ineson-FH=e-4approximatingtoane1.ongationof32,2on4So.FigHF
23、e-Smaybeusedfortheca1.cu1.ationofa1.1.e1.ongationconversions.TheO1.iverformujnayberewrittenas加=41怆=1.1.:2X/hwhereKandK2designatetheproportiona1.ityratiosbyanytwotestpieces.K1.=ASi,)fortwotestpiects;Figure5showstheva1.ues1.i：2=(Ki2)0.4TouseFigure5,itisnecessarytoPerfonnthefo1.1.owingoperations：IKb)re
24、adgraphica1.1.ythecoefficie哩i：2以K1.2)o.*;Y8070605550454035302520三三-=-三三-三-三-三三三-三三=，孩Q4的0蜃便:.as.,/.广，yj/，7/，/)X*/7/(XZ/，/J/力-/4至/，/,/rx/J/X/J/k/1./二rx厂/1./N/J-/,.，(/Z7.1./J/-J/一/-尸/J./-X/I，-/-/X/-J/-/X/-/,，-,Z，-/Z/1./，.-/JJ，/一一X/K-W/-/1，-/=三=二菖三s1.i1.f-SRt-10201三_=三一三一*三h=W=一三三-三三=10020050010002000X
25、cross-sectiona1.area(mm2)correspondinge1.ongationon50pmgauge1.engthPercentagee1.ongationon5,65So.Figure1Conversionsbetween5.65魏andSOmmgauge1.engthY807060504030252010IWgg7.:-r/,-.-_/，二-/,/-/.，J乞S-Z,二-:=Si=三三*三三W三三三O三三*MMMBMBMMBBM*M(0*MB*MiOMHBIMMWMMMmba三wf1.BMBa三WMaManaMiaaMMaaMhbB1.abmbbb4MM,16,一；Mn
26、gNOQ*amorF.xsw.90SN3ISSiiSi工，I，名察!看,Sa一!ff,f7、”分ZWg之5,，/-,/-ZX-一二二二r-二二一二7/，“/-N74-/.，/50*Ni名NZSZ三WN-RSN”/，-/100二-Z/-*,二/mi三=-三三三三wwvjII;/-,-/-，二/1-/XX.;/,/*J-/Jx%*-/Y/.*-Y二/X/，-牙,-/1.2/一1./.*Z*-*,一一.I-.*-/1.-*:./F1././I-一/三I-1./S,/1./XZ/一二/，Z/:，/*-IV-/*X-/1X/Jr一，-/Z/,IIII彳/JX/I*/-一/Y/r-1I./P/，If/-X/10205010020050010002000XXcross-sectiona1.area(mmz)Ycorrespondinge1.ongationonmmgauge1.engthaPercentagee1.ongationon4Sb.Figure4Conversionsbetween4si)and200nungauge1.engthKeyY1IsGK2=1.2潸Figure5-Conversionsofe1.ongationva1.uesBib1.iography1O1.iverD.A.,Proc.InstMech.Eng.,111928:827
