ICS 77.140.60 H44 YB Ferrous Metallurgy Professional Standard of the People's Republic of China YB/T4264—2020 ReplaceYB/T4264—2011 Steel wire rod for bridge cable wire 桥梁缆索钢丝用盘条 (Eng/ish Trans/ation) Issue date: 202X-0X-xx Implementationdate:202X-0X-XX IssuedbyNational ministry of industry and informationof the People'sRepublicofChina YB/T42642020 Foreword SAc/TC 183 is in charge of this English translation. In case of any doubt about the contents of English translation, the Chinese original shall be considered authoritative. This standard is drafted in accordance with the rules given in the GB/T1.1—2009(Directives for standardization-Part 1:Rules for the structure and drafting of standards). This standard will replace YB/T 42642011: Hot-rolled wire rod for bridge cable wire,the main technical changes are as follows: Revised the title of standard; -Added designation of steel grades; Revised the permissible tolerances in diameter and out-of roundness of wire rod; -Revised the name of steel grades; Deleted QS77Mn and added QS97; Revised requirements of partial chemical composition; -Revised requirements of delivery condition; -Revised requirements of mechanical property; Revised requirements of non-metallic inclusions; d microstructure requirement; Revised -Revised batch rule. The standard was proposed by China Iron and Steel Association. This standard dwaspreparedbySAC/TC183(Technical( Committee 183 3onSteelof Standardization Committee of China). The previous edition of this standard is as follows: -YB/T4264-2011 2 YB/T4264—2020 Steel wire rod for bridge cable wire 1 Scope This standard specifies the designation, ordering information, dimension, shape,mass and permissible tolerances,technical requirements,testmethods, inspection rule,packaging, marking and quality certificate of steel wire rod for bridge cable wire This standard is applicable to steel wire rod for bridge cable wire. 2Normativereferences The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T222Permissib/e to/erancesfor chemica/ composition of stee/products GB/T223.5Stee/and iron-Determinationofacid-so/ub/esi/iconandtota/si/iconcontent -Reducedmo/ybdosi/icatespectrophotometricmethod GB/T223.11/ron,stee/anda//oy-Determinationof chromiumcontent-Visua/titration orpotentiometrictitrationmethod GB/T223.18 Methods for chemica/ analysis of iron stee/and a/loy.The sodium thiosu/fate separation iodimetric method for the determination of cupper content GB/T 223.19Methodsforchemica/analysisofiron,stee/andalloy--The neocuproine-ch/oroformextraction photometric method for the determination of copper content content GB/T223.37Methodsforchemica/ana/ysisofiron,stee/anda//oy--Theindopheno/b/ue photometric methods for the determination of nitrogen content after distillation separation GB/T223.53 Methods for chemica/analysis of iron,stee/ and a//oy--The f/ame atomic absorption spectrophotometricmethod forthe determination of copper content GB/T223.59 /ron,stee/and alloy.Determination ofphosphoruscontent.Bismuth phosphomo/ybdateb/uespectrophotometic method and antimony phosphomo/ybdate b/ue spectruophotometricmethod GB/T223.60Methodsfor chemica/ana/ysisofiron,stee/anda//oy--Theperch/oricacid dehydration gravimetric method for the determination of silicon content GB/T223.63Methodsforchemica/ana/ysisofiron,stee/anda/loy--The sodium(potassium)periodatephotometricmethodforthedeterminationofmanganesecontent GB/T 223.64/ron,stee/ and a//oy.Determination ofmanganesecontent.F/ameatomic absorptionspectrometricmethod 3