QCT273-99标准（英文版）

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1、.ExplanationaboutStandardNumberPortabilityAccordingtotherequirementNo.[1998]216ofstandardletterissuedbyStateAdministrationofQualityTechnicalSupervisionandwrittenreplyNo.[1999]126ofStateBureauofMachineBuildingIndustry,theoriginalstandardnumberZBT05002-89istransformedtotradestandardnu

2、mberQC/T273-1999,butthecontentswon’tbechangedtemporarily.Pleaseusenewstandardnumberswhenquoting.PRCTradeStandardZBT05002-89TechnicalConditionofZincAlloy,AluminumAlloyandCopperAlloyDie-CastingPartsforAutomobile1ContentsandapplicationscopeThisstandardstipulatestechnicalrequirement,ins

3、pectionmethod,inspectionrules,identificationandpackagingofzincalloy,aluminumalloyandcopperalloydie-castingpartsforautomobile.Thisstandardisapplicabletozincalloy,aluminumalloyandcopperalloydie-castingpartsonautomobile.2NormativereferenceGB228TestmethodofmetalpullGB231Testmethodofmeta

4、lShorehardnessJB3072Testspecimensfornonferrousdie-castingalloysZBT04006.4Limitoffsetforcastingsofunnotedtolerance3Technicalrequirement3.1Chemicalcompositionofzincalloy,aluminumalloyandcopperalloyisasshownintable1,table2andtable3.Table1%AlloydesignationAlloycodeMaincompositionImpurit

5、y(nomorethan)AlCuMgZnFePbSnCdTotalYZZnAl4CU1Y413.5~4.50.75~1.250.03~0.08Other0.10.0050.0030.0050.2YZZnAl4Y403.5~4.50.10.03~0.08Other0.10.0050.0030.0050.2Table2%AlloydesignationAlloycodeMaincompositionImpurity(nomorethan)SiCuMgMnAlFeSnZnMnCuTotalYZAlSi12Y10210.0~13.0---Other1.2-0.30.

6、60.62.3YZAlSi10MgY1048.0~10.5-0.17~0.30.2~0.5Other1.0-0.3-0.31.5YZAlSi12Cu2Y10811.0~13.01.0~2.00.4~1.00.8~0.9Other1.00.011.0--2.0YZAlSi9Cu4Y1127.5~9.53.0~4.00.1~0.30.2~0.5Other1.00.11.2--2.0ApprovedbyPRCAutomobileIndustryUniononDec.7,1989ImplementedonApril1,1990ZBT05002-89Table3%All

7、oydesignationAlloycodeMaincompositionImpurity(nomorethan)CuPbZnFeAlSbTotalYZCuZn40Pb1Y59157~610.8~1.9Other0.80.20.051.501.1Mechanicalperformanceofalloyisasshownintable4.Table4AlloycategoryAlloydesignationMechanicalperformance(nolessthan)Tensilestrengthαb(Mpa)Extensionrateδ(%)Hardnes

8、sHBZnalloyYZZnAl4Cu