astm e92-82(2003)e2

1、Designation:E92–82(Reapproved1997)e3AnAmericanNationalStardStardTestMethodfVickersHardnessofMetallicMaterials1ThisstardisissuedunderthefixeddesignationE92thenumberimmediatelyfollowingthedesignationindicatestheyearofigina

2、ladoptioninthecaseofrevisiontheyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperepsilon(e)indicatesaneditialchangesincethelastrevisionreapproval.ThisstardhasbeenapprovedfusebyagenciesoftheDep

3、artmentofDefense.e1NOTE—Section27wasaddededitiallyinOctober1997.e2NOTE—ThetermloadwaschangedtofceeditiallythroughoutinMay1999.e3NOTE—Table4Table5Table6wereeditiallyrevisedinApril2000.1.Scope1.1Thistestmethodcoversthedete

4、rminationoftheVickershardnessofmetallicmaterialsusingappliedfcesof1kgfto120kgf2theverificationofVickershardnesstestingmachines(PartB)thecalibrationofstardizedhardnesstestblocks(PartC).Twogeneralclassesofstardtestsarereco

5、gnized:1.1.1VerificationLabatyRefereeTestswhereahighdegreeofaccuracyisrequired.1.1.2RoutineTestswhereasomewhatlowerdegreeofaccuracyispermissible.1.2Thisstarddoesnotpurpttoaddressallofthesafetyconcernsifanyassociatedwithi

6、tsuse.Itistheresponsibilityoftheuserofthisstardtoestablishappropriatesafetyhealthpracticesdeterminetheapplicabilityofregulatylimitationspritouse.2.ReferencedDocuments2.1ASTMStards:E4PracticesfFceVerificationofTestingMach

7、ines3E140HardnessConversionTablesfMetals(RelationshipBetweenBrinellHardnessVickersHardnessRockwellHardnessRockwellSuperficialHardnessKnoopHardnessSeleroscopeHardness)3E384TestMethodfMicrohardnessofMaterials33.Terminology

8、3.1VickershardnessnumberHV—anumberrelatedtotheappliedfcethesurfaceareaofthepermanentimpressionmadebyasquarebasedpyraaldiamondindenterhavingincludedfaceanglesof136(seeFig.1Table1)computedfromtheequation:HV52Psin~a2!d251.8

9、544Pd2(1)where:P=fcekgfd=meandiagonalofimpressionmma=faceangleofdiamond=136.3.2Vickershardnesstest—anindentationhardnesstestusingcalibratedmachinestofceasquarebasedpyraaldiamondindenterhavingspecifiedfaceanglesunderapred

10、eterminedfceintothesurfaceofthematerialundertesttomeasurethediagonalsoftheresultingimpressionafterremovalofthefce.3.2.1Vickershardnesstestsaremadeattestfcesof1kgfto120kgf.1ThistestmethodisunderthejurisdictionofASTMCommit

11、teeE28onMechanicalTestingisthedirectresponsibilityofSubcommitteeE28.06onIndentationHardnessTesting.CurrenteditionapprovedJuly301982.PublishedDecember1982.iginallypublishedasE92–52T.LastpreviouseditionE92–72(1977).2Aproce

12、durecoveringVickerstestsusingappliedfcesof1gfto1000gf(1kgf)maybefoundinTestMethodE384TestMethodfMicrohardnessofMaterialsappearingintheAnnualBookofASTMStardsVol03.01.3AnnualBookofASTMStardsVol03.01.FIG.1VickersHardnessTes

13、t(seeTable1)TABLE1SymbolsDesignationsAssociatedwithFig.1NumberSymbolDesignation1...Angleatthevertexofthepyraalindenter(136)2PTestfceinkilogramsfce3dArithmeticmeanofthetwodiagonalsd1d21Copyright?ASTM100BarrHarbDriveWestCo

14、nshohockenPA194282959UnitedStates.TABLE2ContinuedDiagonalofImpressionmmVickersHardnessNumberfDiagonalMeasuredto0.0001mm0.00000.00010.00020.00030.00040.00050.00060.00070.00080.00090.060515.1513.4511.7510.0508.3506.6505.05

15、03.3501.6500.00.061498.4496.7495.1493.5491.9490.3488.7487.1485.5484.00.062482.4480.9479.3477.8476.2474.7473.2471.7470.2468.70.063467.2465.7464.3462.8461.3459.9458.4457.0455.6454.10.064452.7451.3449.9448.5447.1445.7444.44

16、43.0441.6440.30.065438.9437.6436.2434.9433.6432.2430.9429.6428.3427.00.066425.7424.4423.1421.9420.6419.3418.1416.8415.6414.30.067413.1411.9410.6409.4408.2407.0405.8404.6403.4402.20.068401.0399.9398.7397.5396.6395.2394.03

17、92.9391.8390.60.069389.5388.4387.2386.1385.0383.9382.8381.7380.6379.50.070378.4377.4376.3375.2374.2373.1372.0371.0369.9368.90.071367.9366.8365.8364.8363.7362.7361.7360.7359.7358.70.072357.7356.7355.7354.7353.8352.8351.83

18、50.9349.9348.90.073348.0347.0346.1345.1344.2343.3342.3341.4340.5339.60.074338.6337.7336.8335.9335.0334.1333.2332.3331.4330.50.075329.7328.8327.9327.0326.2325.3324.5323.6322.7321.90.076321.0320.2319.4318.5317.7316.9316.03

19、15.2314.4313.60.077312.8312.0311.1310.3309.5308.7307.9307.2306.4305.60.078304.8304.0303.2302.5301.7300.9300.2299.4298.6297.90.079297.1296.4295.6294.9294.1293.4292.7291.9291.2290.50.080289.7289.0288.3287.6286.9286.2285.42

20、84.7284.0283.30.081282.6281.9281.2280.6279.9279.2278.5277.8277.1276.50.082275.8275.1274.4273.8273.1272.4271.8271.1270.5269.80.083269.2268.5267.9267.2266.6266.0265.3264.7264.1263.40.084262.8262.2261.6260.9260.3259.7259.12

21、58.5257.9257.30.085256.7256.1255.5254.9254.3253.7253.1252.5251.9251.30.086250.7250.1249.6249.0248.4247.8247.3246.7246.1245.60.087245.0244.4243.9243.3242.8242.2241.6241.1240.6240.00.088239.5238.9238.4237.8237.3236.8236.22

22、35.7235.2234.60.089234.1233.6233.1232.5232.0231.5231.0230.5230.0229.40.090228.9228.4227.9227.4226.9226.4225.9225.4224.9224.40.091223.9223.4222.9222.5222.0221.5221.0220.5220.0219.60.092219.1218.6218.1217.7217.1216.7216.32

23、15.8215.3214.90.093214.4213.9213.5213.0212.6212.1211.7211.2210.8210.30.094209.9209.4209.0208.5208.1207.6207.2206.8206.3205.90.095205.5205.0204.6204.2203.8203.3202.9202.5202.1201.60.096201.2200.8200.4200.0199.5199.1198.71

24、98.3197.9197.50.097197.1196.7196.3195.9195.5195.1194.7194.3193.9193.50.098193.1192.7192.3191.9191.5191.1190.7190.4190.0189.60.099189.2188.8188.4188.1187.7187.3186.9186.6186.2185.5AtlowertestfcestheVickershardnessmaybefce

25、dependent.InTable2aregiventheVickershardnessnumbersfatestfceof1kgf.FobtaininghardnessnumberswhenothertestfcesareusedtheVickershardnessnumberobtainedfromTable2ismultipliedbythetestfceinkilogramsfce(Table3).NOTE1—TheVicker

26、shardnessnumberisfollowedbythesymbolHVwithasuffixnumberdenotingthefcesecondsuffixnumberindicatingthedurationoffceingwhenthelatterdiffersfrom10to15swhichisthenmalfcetime.Example:440HV30=Vickershardnessof440measuredunderaf

27、ceof30kgfappliedf10to15s.440HV3020=Vickershardnessof440measuredunderafceof30kgfappliedf20s.3.3verification—checkingtestingtoassureconfmancewiththespecification.3.4calibration—determinationofthevaluesofthesignificantparam