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山东伊莱特重工有限公司技术标准SHANDONGIRAETAHEAVYINDUSTRYCO.LTDTECHNICALSTANDARDQ/YLT001-2015309D、408D热轧圆钢309D、408DHotRolledRoundSteel2015-05-15发布2015-05-15实施IssuanceDate2015-05-15ExecuteDate2015-05-15山东伊莱特重工有限公司发布SHANDONGIRAETAHEAVYINDUSTRYCO.LTDReleasedQ/YLT001-2015前言Introduction1、本标准是根据山东伊莱特重工有限公司贸易部客户要求起草的。1、ThestandardisdraftedaccordingtotherequirementsbySHANDONGIRAETATradeDepartment’sclients.2、本标准由山东伊莱特重工有限公司采购部、检测中心提出。2、ThestandardisputforwardbySHANDONGIRAETAHEAVYINDUSTRYCO.LTDPurchaseDepartmentandTestingCenter.3、本标准由山东伊莱特重工有限公司技术部归口。3、ThestandardiscentralizedmanagementbyTechnicalDepartmentofSHANDONGIRAETAHEAVYINDUSTRYCO.LTD.4、本标准主要起草单位：技术部、贸易部、采购部、检测中心。4、Thestandardismainlydraftedbyfollowingcommittees:TechnicalDepartment、TradeDepartment、PurchaseDepartment、TestingCenter.5、本标准主要起草人：牛余刚、陈吉元、任秀凤、秦英超、张永庆、董伟臣、刘守峰。5、Thestandard’smainlydrafters:YugangNiu、JiyuanChen、XiufengRen、YingchaoQin、YongQingZhang、WeichenDong、ShoufengLiu.ⅠQ/YLT001-2015309D、408D热轧圆钢309D、408DHotRolledRoundSteel1范围本标准规定了热轧圆钢尺寸、外形、重量及允许偏差、技术要求、试验方法、检验规则、质量证明书、包装、标志等要求。1Range:Thisstandardspecifiesrequirementsforrolledroundsteeldimensions,shape,weightandpermissibledeviations,technicalrequirements,testingmethods,inspectionrules,certificateofquality,packing,marking,etc.本标准适用于直径20mm-120mm的热轧圆钢。Thestandardisapplytohotrolledroundsteelwhichdiameter20mm-120mm.2规范性引用文件下列文件对于本文件的应用是必不可少的。凡是注日期的引用文件，仅注日期的版本适用于本文件。凡是不注日期的引用文件，其最新版本（包括所有的修改单）适用于本文件。2Normativereferencedocuments:Thefollowingfilesareessentialtotheapplicationofthisdocument.Forthereferencefilewhichnotedthedate,onlytheversionnotedthedateisapplicabletothisdocument.Forthereferencefilewhichnotnotedthedate,Thelatestversion(includingallamendments)appliestothisdocument.GB/T223钢铁及合金化学分析方法SteelandalloychemicalanalysismethodGB/T224钢的脱碳层深度测定法DeterminationofdepthofdecarburizationofsteelsGB/T2101型钢验收、包装、标志及质量证明书的一般规定Generalrequirementsofacceptance,packing,markingandqualitycertificateforsectionsteelGB/T4336碳素钢和中低合金钢火花源原子发射光谱分析方法（常规法）Standardtestmethodforsparkdischargeatomicemissionspectrometricanalysisofcarbonandlow-alloysteel(routinemethod)GB/T17505钢及钢产品交货一般技术要求Steelandsteelproducts-generaltechnicaldeliveryrequirementsGB/T18254高碳铬轴承钢HighcarbonchromiumbearingsteelGB/T20066钢和铁化学成分测定用试样的取样和制样方法Steelandiron-samplingandpreparationofsamplesforthedeterminationofchemicalcompositionGB/T20123钢铁总碳硫含量的测定高频感应炉燃烧后红外吸收法（常规方法）Steelandiron-determinationoftotalcarbonandsulfurcontent-infraredabsorptionmethodaftercombustioninaninductionfurnace(routinemethod)ASTME45钢中夹杂物含量的测定方法DeterminationmethodofcontentofinclusioninsteelASTME112平均晶粒度测定标准测试方法Metal-methodsforestimatingtheaveragegrainsizeSA-370钢制品力学性能试验的标准试验方法和定义(与A370-02完全等同)Standardtestmethodsanddefinitionsformechanicaltestingofsteelproducts(equaltoA370-02)SEP1921边长或直径接近100mm的锻件或锻制钢材超声波试验方法Sidelengthordiametercloseto100mmforgingsteelultrasonictestmethod3尺寸、外形、重量及允许偏差3dimensions,shape,weightandpermissibledeviations3.1钢材公称直径为20mm-120mm，直径允许偏差、不圆度、交货长度应符合表1要求。3.1Steelnominaldiameteris20mm-120mm,theallowabledeviationofdiameter,thenon-roundness,deliverylengthshouldbeinaccordancewiththerequirementsofTable1.表1公称直径直径允不圆度≤交货长度定尺交货时定尺交货时，短许偏差允许偏差尺钢材允许交货（Inch）（mm）（mm）（mm）（mm）（mm）量≤320mm-120mm±1.21.2合同注明±252%3.5±1.21.5合同注明±252%4±1.21.5合同注明±252%3.2钢材弯曲度为不大于2.5mm/m，总弯曲度不大于总长度的0.25%，无硬弯。钢材两端的切斜度不得大于公称直径的30%。两端可剪切，无飞边、毛刺。相同长度短尺料单独结捆。3.2Thebendingdegreeofsteelisnomorethan2.5mm/m,andthetotalbendingdegreeisnomorethan0.25%ofthetotallength，nohardbending.Theslopeofthetwoendsofthesteelshallnotbegreaterthanthenominaldiameterof30%.Twoendscanbecut,noflyingedge,burr.Theshortersteelwhichhassamelengthshouldbeknottedseparately.3.3钢材按实际检斤重量交货。3.3Steelwillbedeliveredaccordingtotheactualweighingweight.4要求4Requirements4.1牌号及化学成分4.1GradesandChemicalComposition4.1.1钢的牌号及化学成分（熔炼分析，%）应符合表2规定。且熔炼分析H小于2.0ppm，成品钢材[H]含量小于或等于0.8ppm，成品钢材[O]含量小于15ppm。4.1.1Gradeofsteelandchemicalcomposition(smeltinganalysis)shouldbeinaccordancewiththerequirementsofTable2.Smeltinganalysis:[H]＜2.0ppm，Finishedsteel:[H]≤0.8ppm,[O]＜15ppm.第一页，共四页Q/YLT001-2015表2%牌号CSiMnPSCrTiMo最小0.850.250.950.0000.0000.800.0120.03309D最大0.950.351.050.0150.0100.900.0200.08目标值0.900.301.000.0000.0000.850.0160.05最小0.800.180.950.0000.0000.750.0120.03408D最大0.900.351.050.0150.0100.850.0250.08目标值0.850.231.000.0000.0000.800.0160.05表2（续）%牌号NbAlNiSnCuDI（inch）≥mm最小0.0300.020相应标准公称直径309D最大0.0500.050目标值0.0400.030≤0.20≤0.20≤0.30最小0.0300.020408D最大0.0500.050目标值0.0400.030DI=[0.062+0.409*(%C)-0.135*(%C)*(%C)]*[1+3.333*(%Mn)]*[1+0.7*(%Si)]*[1+2.16*(%Cr)]*[1+3*(%Mo)]*[1+0.363*(%Ni)]*[1+0.365*(%Cu)]。4.1.2成品钢材化学成分允许偏差应符合表3的规定。4.1.2TheallowabledeviationoffinishedsteelchemicalcompositionshouldbeinaccordancewiththerequirementsofTable3.表3%元素CSiMnCrPSTiAlMo允许±+±±++±±±偏差0.030.020.030.030.0050.0050.0010.010.014.1.3在钢材同一横截面上中心处的碳含量和距中心为半径的80%处碳含量比值为小于或等于1.15。4.1.3Onthesamecrosssectionofthesteel,theratioofcarboncontentofthecentertothe80%distancecenterislessthanorequalto1.15.4.2冶炼方法钢应采用电炉/转炉+LF+VD。4.2Smeltingmethod:usingelectricstove/converter+LF+VD4.3交货状态热轧。4.3Conditionofdelivery:Hotrolling4.4加工方法热压力加工。4.4P