AS 1817-2-2002 Metallic materials—Vickers hardness

AS1817.2—2002ISO6507-2:1997iAustralianStandardTMMetallicmaterials—VickershardnesstestMethod2:VerificationoftestingmachinesPREFACEThisStandardwaspreparedbyStandardsAustraliaCommitteeMT-006,MechanicalTestingofMetalstosupersede(inpart)AS1817—1991,Metallicmaterials—Vickershardnesstest.ThisStandardisidenticalwithandisreproducedfromISO6507-2:1997,Metallicmaterials—Vickershardnesstest,Part2:Verificationoftestingmachines.ThisStandardisMethod2ofaseriesofStandardscoveringtheVickersharnesstestingofmetallicmaterials.TheseriescomprisesthefollowingMethods:AS1817Vickershardnesstest1817.1Method1:Testmethod(ISO6507-1:1997,MOD)1817.2Method2:Verificationoftestingmachines1817.3Method3:CalibrationofreferenceblocksTheforcevaluesinthisMethodwerecalculatedfromkilogramforcevalues.TheywereintroducedbeforetheSI-systemwasadopted.ItwasdecidedtokeepthevaluesbasedontheoldunitsforthisMethodbutinthenextrevisionitwillbenecessarytoconsidertheadvantageofintroducingroundedvaluesoftestforceandtheireffectonthehardnessscales.Attentionisdrawntothefactthatinthisrevisionthefollowingaspectsshouldbeconsidered:(a)Additionofanewtable(Table3)fortheestimationcapabilityandthemaximumpermissibleerrorofthemeasuringdevice.(b)ChangesofthevaluesfortherepeatabilityofthehardnesstestingmachinesinTable4.(c)AdditionofanewClause6concerningtheintervalsbetweentheverifications.(d)AdditionofanewAnnexA‘Exampleofamethodforanindirectverificationofthemeasuringdevice’(usingareferenceindentation).(e)AdditionofanewAnnexB‘Notesondiamondindentors’.AsthisStandardisreproducedfromanInternationalStandard,thefollowingapplies:(i)Itsnumberdoesnotappearoneachpageoftextanditsidentityisshownonlyonthecoverandtitlepage.(ii)Inthesourcetext‘thispartofISO6507’shouldread‘thisAustralianStandard’.(iii)Afullpointshouldbesubstitutedforacommawhenreferringtoadecimalmarker.ReferencestoInternationalStandardsshouldbereplacedbyreferencestoequivalentAustralianStandards,asfollows:AS1817.2AccessedbyUNIVERSITYOFSOUTHAUSTRALIAon23Jul2007iiReferencetoInternationalStandardAustralianStandardISOAS376Metallicmaterials—Calibrationofforce-provinginstrumentsusedfortheverificationofuniaxialtestingmachines—3878Hardmetals—Vickershardnesstest1817Metallicmaterials—Vickershardnesstesting1817.1Part1:Testmethod(ISO6507-1:1997,MOD)ISO6507Metallicmaterials—Vickershardnesstest1817Metallicmaterials—Vickershardnesstest6507-1Part1:Testmethod1817.1Method1:Testmethod(ISO6507-1:1997,MOD)6507-3Part3:Calibrationofreferenceblocks1817.3Method3:CalibrationofreferenceblocksTheterm‘informative’hasbeenusedinthisStandardtodefinetheapplicationoftheappendixtowhichitapplies.An‘informative’appendixisonlyforinformationandguidance.AccessedbyUNIVERSITYOFSOUTHAUSTRALIAon23Jul20071ScopeThispartofISO6507specifiesamethodofverificationoftestingmachinesfordeterminingVickershardnessinaccordancewithISO6507-1.Itdescribesadirectverificationmethodforcheckingthemainfunctionsofthemachine,andanindirectverificationmethodsuitablefortheoverallcheckingofthemachine.Theindirectverificationmethodmaybeusedonitsownforperiodicroutinecheckingofthemachineinservice.Ifatestingmachineisalsotobeusedforothermethodsofhardnesstesting,itisessentialthatitisverifiedindependentlyforeachmethod.PortablehardnesstestingmachinesshallcomplywithalltherequirementsofthispartofISO6507,butthewordrelocationin6.1a)doesnotapply.TheforcevaluesinthispartofISO6507werecalculatedfromkilogramforcevalues.TheywereintroducedbeforetheSI-systemwasadopted.Itwasdecidedtokeepthevaluesbasedontheoldunitsforthisedition,butforthenextrevisionitwillbenecessarytoconsidertheadvantageofintroducingroundedvaluesoftestforceandtheconsequenceonthehardnessscales.2NormativereferencesThefollowingstandardscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthispartofISO6507.Atthetimeofpublication,theeditionsindicatedwerevalid.Allstandardsaresubjecttorevision,andpartiestoagreementsbasedonthispartofISO6507areencouragedtoinvestigatethepossibilityofapplyingthemostrecenteditionsofthestandardsindicatedbelow.MembersofIECandISOmaintainregistersofcurrentlyvalidInternationalStandards.ISO376:—1),Metallicmaterials—Calibrationofforce-provinginstrumentsusedfortheverificationofuniaxialtestingmachines.ISO3878:1983,Hardmetals—Vickershardnesstest.ISO6507-1:1997,Metallicmaterials—Vickershardnesstest—Part1:Testmethod.ISO6507-3:1997,Metallicmaterials—Vickershardnesstest—Part3:Calibrationofreferenceblocks.____________1)Tobepublished.(RevisionofISO376:1987)1©StandardsAustraliaAccessedbyUNIVERSITYOFSOUTHAUSTRALIAon23Jul20073GeneralconditionsBeforeaVickershardnesstestingmachineisverified,itshallbecheckedtoensurethata)themachineisproperlysetup;b)theplungerholdingtheindenteriscapableofslidinginitsguide;c)theindenter-holderisfirmlymountedintheplunger;d)thetestforcecanbeappliedandremovedwithoutshockorvibrationandinsuchamannerthatthereadingsarenotinfluenced;e)ifthemeasuringdeviceisintegralwiththemachine1)thechangefromremovingthetestforcetomeasuringmodedoesnotinfluencethereadings,2)illuminationdoesnotaffectthereadings,3)the