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【英文标准名称】:Mechanicalpropertiesoffastenersmadeofcarbonsteelandalloysteel-Bolts,screwsandstuds
【原文标准名称】:碳钢和合金钢制的紧固件的机械特性.螺栓、螺钉和螺柱
【标准号】:BSENISO898-1-1999
【标准状态】:作废
【国别】:英国
【发布日期】:1999-10-15
【实施或试行日期】:1999-10-15
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:断裂荷载;钢;化学成分;紧固件;HB;凸头螺钉;螺栓;计数检查;规范;螺纹;热处理;外螺纹紧固件;强度等级;弹性极限应力;紧配合螺纹;渗碳;试验电压;硬度测量;六角头螺钉;左螺纹;螺柱;硬度;维氏硬度;抗拉试验;布氏硬度;机械性能;抗拉强度;屈服强度;碳素钢;材料的机械性能;碳化;命名体制;断裂伸长;部分脱碳;试验力;六角内孔;有缺口冲击试验;洛氏(硬度);材料;ISO螺纹;定义;周围脱碳;标准螺纹;特性;交货条件;螺钉;表面;作标记;合金钢;名称与符号;物理性能;材料强度;试验
【英文主题词】:Alloysteels;Bolts;Breakingload;Brinellhardness;Carbonsteels;Carbonization;Carburization;Carburizing;Cheeseheadscrews;Chemicalcomposition;Close-fitthreads;Definitions;Deliveryconditions;Designationsystems;Designations;Elongationatfracture;External-threadfasteners;Fasteners;Hardness;Hardnessmeasurement;HB;Heattreatment;Hexagonheadscrews;Hexagonsockets;Inspectionbyattributes;ISOscrewthreads;Left-handscrewthreads;Marking;Materials;Mechanicalproperties;Mechanicalpropertiesofmaterials;Normalthreads;Notchedbarimpactwork;Partialdecarburization;Peripheraldecarburization;Physicalproperties;Proofstress;Properties;Rockwell;Screws(bolts);Specifications;Steels;Strengthclass;Strengthofmaterials;Studs(fasteners);Surfaces;Tensilestrength;Tensiletesting;Testforces;Testing;Testingvoltages;Threads;Vickershardness;Yieldstrength
【摘要】:ThispartofISO898specifiesthemechanicalpropertiesofbolts,screwsandstudsmadeofcarbonsteelandalloysteelwhentestedatanambienttemperaturerangeof10℃to35℃.ProductsconformingtotherequirementsofthispartofISO898areevaluatedonlyintheambienttemperaturerangeandmaynotretainthespecifiedmechanicalandphysicalpropertiesathigherandlowertemperatures.AttentionisdrawntoannexAwhichprovidesexamplesofloweryieldstressandstressat0,2%non-proportionalelongationatelevatedtemperatures.Attemperatureslowerthantheambienttemperaturerange,asignificantchangeintheproperties,particularlyimpactstrength,mayoccur.Whenfastenersaretobeusedaboveorbelowtheambienttemperaturerangeitistheresponsibilityoftheusertoensurethatthemechanicalandphysicalpropertiesaresuitableforhisparticularserviceconditions.CertainfastenersmaynotfulfillthetensileortorsionalrequirementsofthispartofISO898becauseofthegeometryoftheheadwhichreducestheshearareaintheheadascomparedtothestressareainthethreadsuchascountersunk,raisedcountersunkandcheeseheads(seeclause6).ThispartofISO898appliestobolts,screwsandstuds—withcoarsepitchthreadM1,6toM39,andfinepitchthreadM8×1toM39×3;—withtriangularISOthreadinaccordancewithISO68-1;—withdiameter/pitchcombinationsinaccordancewithISO261andISO262;—withthreadtoleranceinaccordancewithISO965-1andISO965-2;—madeofcarbonsteeloralloysteel.Itdoesnotapplytosetscrewsandsimilarthreadedfastenersnotundertensilestresses(seeISO898-5).Itdoesnotspecifyrequirementsforsuchpropertiesas—weldability;—corrosion-resistance;—abilitytowithstandtemperaturesabove+300℃(+250℃for10.9)orbelow-50℃;—resistancetoshearstress;—fatigueresistance.NOTEThedesignationsystemofthispartofISO898maybeusedforsizesoutsidethelimitslaiddowninthisclause(e.g.d>39mm),providedthatallmechanicalrequirementsofthepropertyclassesaremet.
【中国标准分类号】:J13
【国际标准分类号】:21_060_10
【页数】:38P;A4
【正文语种】:英语