GBT 1591-2008标准（英文版）

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1、ICS77.140.10;77.140.50H46NATIONALSTANDARDOFTHEPEOPLE’SREPPUBLICOFCHINA中华人民共和国国家标准GB/T1591-2008ReplaceGB/T1591-1994HighStrengthLowAlloyStructuralSteels低合金高强度结构钢IssuedonDecember6,2008ImplementedonOctober1,2009JointlyissuedbytheGeneralAdministrationofQualitySupervision,Inspec

2、tionandQuarantineofthePeople'sRepublicofChinaandTheStandardizationAdministrationofChina2Contents1.Scope12.NormativeReferences13.TermsandDefinitions24.GradeRepresentation35.Dimension,Shape,WeightandAllowableDeviation36.TechnicalRequirements37.TestMethod138.TestRules139.Pack

3、aging,MarkandQualityCertificate1413ForewordThestandardGB/T1591-1994"HighStrengthLowAlloyStructuralSteels"isrevisedinaccordancewithEN10025:2004"StructuralSteelHotRolledProducts".ThisstandardreplacesGB/T1591-1994"HighStrengthLowAlloyStructuralSteels".Therehavebeensomesignifi

4、cantchangesinthisstandardoverGB/T1591-1994inthefollowingtechnicalaspects:——applicationrangeofthestandardisexpanded;——gradedintensityscalesoftheQ500,Q550,Q620andQ690areadded;andgradedintensityscaleofQ295iscancelled;——therequirementsofthechemicalcompositionofthesteelproducts

5、aremodified;andsuchharmfulelementsasphosphorusandsulfurarecontrolledmorestrictly;——calculationformulaandrequirementsofthecarbonequivalentandcracksensitivitycoefficientofthesteelproductsareadded——deliverystateofthesteelproductsismodified;andtherequirementsofthequenchedandte

6、mperedsteelarecancelled;——therequirementsformechanicalpropertiesandthicknessclasswidthofthesteelproductsaremodified;andloweryieldstrengthisdeterminedtotheyieldstrength;——impactabsorptionenergyvalueisimproved;——requirementsforthethicknessdirectionalpropertyofallgradedsteels

7、areadded.ThisstandardisproposedbyChinaIron&SteelAssociation.ThisstandardisunderjurisdictionofChinaSteelStandardizationTechnicalCommittee.Draftingorganizations:AngangSteelCo.,Ltd.;ChinaMetallurgicalInformationStandardizationResearchInstitute;JigangGroupCo.,Ltd.;ShougangGrou

8、p;JiangsuShagangGroupCo.,Ltd.andHunanHualingLianyuanSteelCo.,Ltd.Chiefdraftingstaff:LIUXu