Thirdedition2019-11Metallicmaterials—Tensiletesting—Part1:MethodoftestatroomtemperatureMatehauxmetaUiques—ESSaidetraction—Partie1:Methoded'essaidtemperatureambianteReferencenumberISO689212019{E)INTERNATIONALSTANDARDISO6892-1ContentsForewordvIntroduction.^.______________________________________________________vi2Normativereferences3Termsanddefinitions4Symbols..___5Principle______________________________6l⅛stpiBCeS・・6.1Shapeanddimensions_____________6.1.1General_________________6.1.2Machinedtestpieces______6.1.3Unmachinedtestpieces—6.3Preparationoftestpieces107Determinationoforigins]cross*sθctio∏31area............—.《«^.108Originalgaugelengthandextensometergaugelength.108.1Choiceoftheoriginalgaugelength______________________________________________8.2Markingtheoriginalgaugelength-----------------------------------------------------------------------------8.3Choiceoftheextensometergaugelength_______________________________________________________119AccuracyoftestingNPPAEttIy1110Conditionsoftesting__________________________________________________________________________________1110.1Settingtheforcezeropoint1110.2Mβthodofgripping................................................................1110.33Testingrdtes1210.3.1GeneraIInformat∙ionrθ^ardingIeSIIngιa3les....1210.3.2Testingratebasedonstrainrate(methodA)1210.3.3Testingratebasedonstressrate(methodB)________________________________10.3.4Reportofthechosen【estingConditionS..........................8888999Page.........................................................................................—1511Determinationoftheupperyieldstrength________________________________________________12Determinationoftheloweryieldstrength._______________________________________________13Determinationofproofstrength,plasticextension-......................................................................................................................................................................................................................................................................................................................................................14Determinationofproofstrength,totalPXgn7
