1/56
0/100
您的浏览器不支持进度条
下载所得到的文件列表
GBT 228-2002标准(英文版).doc
文档介绍:
ICS77.040.10H22GBANationalStandardofthePeople'sRepublicofChinaGB/T228-2002eqvISO6892:1998Metallicmaterials-TensiletestingatambienttemperatureIssuedonMarch10,2002 implementonJuly1,2002IssuedbyGeneralAdministrationofQualitySupervision,InspectionandQuarantineofthePeople’sRepublicofChinaGB/T228-2002ContentsForeword…………………………………………………………………………………………IIIISOForeword…………………………………………………………………….………………IV1Scope…………………………………………………………………………………………..…12Normativereferences………………………………………………………………………….…13Principle……………………………………………………………………………….…….……14Definitions……………………………………………………………………………..…………l5Symbolsanddesignations…………………………………………………………………....…..56Testpiece…………………………………………………………………………………………67Determinationoforiginalcross-sectionalarea(So)………………………………………………78Markingtheoriginalgaugelength(Lo)…………………………………………..….……………uracyoftestingapparatus…………………………………………………….………………710Conditionsoftesting…………………………………………………………….………………811Determinationofpercentageelongationafterfracture(A)andpercentagetotalelongationatfracture(At)…………………………………………………………………………………………812Determinationofpercentagetotalelongationatmaximumforce(Agt)andpercentagenon-proportionalelongationatmaximumforce(Ag)………………………………………….……913Determinationofpercentageyieldpointextension(Ae)……………………………………...…914Determinationofupperyieldstrength(ReH)andloweryieldstrength(ReL)…...………………1015Determinationofproofstrength,non-proportionalextension(Rp)…………….………………1016Determinationofproofstrength,totalextension(Rt)…………………………..………………1117Methodofverificationofpermanentsetstrength(Rr)…………………………………………1118Determinationoftensilestrength(Rm)………………………………………….………………1l19Determinationofpercentagereductionofarea(Z)…………………………….………………1220Roundingoffofnumericalvaluesofpropertydeterminationresults…………….……………uracyofpropertydeterminationresults……………………………………………………1422Processingoftestresults……………………………………………………….………………1523Testreport………………………………………………………………………………………15AnnexA(normative)Typesoftestpiecetobeusedforthinsheetsandstripsbetween0.1mmand3mmthick…………………………………………………………………………………………16AnnexB(normative)Typesoftestpiecetobeusedforplatesandflatswithathicknessofnotlessthan3mmandwires,barsandsectionswithadiameterorthicknessofnotlessthan4mm….…17AnnexC(normative)Typesoftestpiecetobeusedforwires,barsandsectionswithadiameterorthicknessoflessthan4mm…………………………………………….…………………………20AnnexD(normative)Typesoftestpiecetobeusedfortubes……………………………………21AnnexE(informative)Determinationmethodusedwhenspecifiedvalueofpercentageelongationafterfractureislessthan5%……………………………………………………………...………24AnnexF(informative)Determinationofpercentageelongationafterfractureusingtransfermethod………………………………………………………………………………….…………24AnnexG(informative)Manualmethodofdeterminationofthepercentagetotalelongationatmaximumforceforlongproductssuchasbars,wiresandrods…………………….……………25AnnexH(informative)Determinationofproofstrength(non-proportionalextension)(Rp)usingstep-by-stepapproach………………………………………………………………….…………26AnnexI(informative)Ani 内容来自淘豆网www.taodocs.com转载请标明出处.
更多>> 相关文档
非法内容举报中心
文档信息
  • 页数56
  • 收藏数0 收藏
  • 顶次数0
  • 上传人3012250582
  • 文件大小0 KB
  • 时间2013-02-19
文档标签