1、September 2017English price group 10No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 77.140.60!%mui“2748270www.din.d
2、eDIN EN ISO 16120-4Nonalloy steel wire rod for conversion to wire Part 4: Specific requirements for wire rod for special applications (ISO 161204:2017);English version EN ISO 161204:2017,English translation of DIN EN ISO 16120-4:2017-09Walzdraht aus unlegiertem Stahl zum Ziehen Teil 4: Besondere Anf
3、orderungen an Walzdraht fr Sonderanwendungen (ISO 161204:2017);Englische Fassung EN ISO 161204:2017,Englische bersetzung von DIN EN ISO 16120-4:2017-09Filmachine en acier non alli destin la fabrication de fils Partie 4: Exigences spcifiques au filmachine pour applications spciales (ISO 161204:2017);
4、Version anglaise EN ISO 161204:2017,Traduction anglaise de DIN EN ISO 16120-4:2017-09SupersedesDIN EN ISO 161204:201110www.beuth.deDocument comprises 17 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.09.17 DIN EN ISO 16120-4:2
5、017-09 2 A comma is used as the decimal marker. National foreword This document (EN ISO 16120-4:2017) has been prepared by Technical Committee ISO/TC 17 “Steel wire rod and wire products” in collaboration with Technical Committee ECISS/TC 106 “Wire rod and wires” (Secretariat: AFNOR, France). The re
6、sponsible German body involved in its preparation was DIN-Normenausschuss Eisen und Stahl (DIN Standards Committee Iron and Steel), Working Committee NA 021-00-08-02 UA “Wire rod for drawing”. Amendments This standard differs from DIN EN ISO 16120-4:2011-10 as follows: a) Clause 3 “Terms and definit
7、ions” has been added; b) the permissible variation for ultimate tensile strength of the wire rod (Table 6 and Table 7) has been revised; c) a cementite network requirement has been included in 5.11.2; d) the standard has been editorially revised. Previous editions DIN EN ISO 16120-4: 2011-10 DIN EN
8、10016-4: 1995-04 DIN 17140-2: 1988-04 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 16120-4 June 2017 ICS 77.140.60 Supersedes EN ISO 16120-4:2011 English Version Non-alloy steel wire rod for conversion to wire Part 4: Specific requirements for wire rod for special applications (ISO 16120
9、-4:2017) Fil-machine en acier non alli destin la fabrication de fils Partie 4: Exigences spcifiques au fil-machine pour applications spciales (ISO 16120-4:2017) Walzdraht aus unlegiertem Stahl zum Ziehen Teil 4: Besondere Anforderungen an Walzdraht fr Sonderanwendungen (ISO 16120-4:2017) This Europe
10、an Standard was approved by CEN on 20 April 2017. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references conce
11、rning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member int
12、o its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, G
13、ermany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES
14、 KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 16120-4:2017 E EN ISO 16120-4:2017 (E) 2 DIN EN ISO 16120-4:2017-09 Contents Page Europea
15、n foreword . 3 Foreword 4 1 Scope 5 2 Normative references 5 3 Terms and definitions 5 4 Designation 5 5 Requirements 6 5.1 General 6 5.2 Chemical composition and mechanical properties . 6 5.3 Internal soundness and surface quality 9 5.4 Depth of surface discontinuities 9 5.5 Depth of decarburizatio
16、n 9 5.5.1 General 9 5.5.2 Complete decarburization 9 5.5.3 Partial decarburization 10 5.6 Non-metallic inclusions 10 5.7 Core segregation . 10 5.8 Tensile strength 10 5.9 Scale characteristics 11 5.10 Mechanical damage 11 5.11 Microstructure . 11 5.11.1 Resolvable pearlite 11 5.11.2 Cementite networ
17、k. 12 Annex A (informative) Steel designations and designation of comparable steel grades . 13 Bibliography . 15 EN ISO 16120-4:2017 (E) European foreword This document (EN ISO 16120-4:2017) has been prepared by Technical Committee ISO/TC 17 “Steel” in collaboration with Technical Committee ECISS/TC
18、 106 “Wire rod and wires” the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by December 2017, and conflicting national standards shall be withdrawn at the lat
19、est by December 2017. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 16120-4:2011. According to the C
20、EN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hung
21、ary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 16120-4:2017 has been approved by CEN as EN ISO 16120-4:2017 w
22、ithout any modification. 3 DIN EN ISO 16120-4:2017-09 ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. E
23、ach member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the Internati
24、onal Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the differen
25、t types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall
26、 not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www .iso .org/ patents).Any trade name used in this document
27、is information given for the convenience of users and does not constitute an endorsement.For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organiz
28、ation (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www .iso .org/ iso/ foreword .html.This document was prepared by Technical Committee ISO/TC 17, Steel, Subcommittee SC 17, Steel wire rod and wire products.This third edition cancels and replaces the second editio
29、n (ISO 16120-4:2011), which has been technically revised.The main changes compared to the previous edition are: Terms and definitions clause added; revisions to the permissible variation for ultimate tensile strength of the wire rod (Table 6 and Table 7); cementite network requirement added (5.11.2)
30、.This document is intended to be used in conjunction with ISO 16120-1. A list of all parts in the ISO 16120 series can be found on the ISO website.EN ISO 16120-4:2017 (E) 4 DIN EN ISO 16120-4:2017-09 1 ScopeThis document specifies requirements for wire rod for conversion to wire for special applicat
31、ions. It is applicable to non-alloy steel wire rod with improved characteristics intended for drawing and/or cold rolling.2 Normative referencesThe following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated ref
32、erences, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 4948-2, Steels Classification Part 2: Classification of unalloyed and alloy steels according to main quality classes and main property or application
33、characteristicsISO 4967, Steel Determination of content of non-metallic inclusions Micrographic method using standard diagramsISO 16120-1:2017, Non-alloy steel wire rod for conversion to wire Part 1: General requirementsISO 16120-2:2017, Non-alloy steel wire rod for conversion to wire Part 2: Specif
34、ic requirements for general purpose wire rod3 Terms and definitionsNo terms and definitions are listed in this document.ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia: available at h t t p :/ www .electropedia .org/ ISO Online br
35、owsing platform: available at h t t p :/ www .iso .org/ obp4 DesignationIn the designation C#D2, “C” means non-alloy steel (see ISO/TS 4949); # is the indicative average content of carbon; “D” signifies that it is for wire-drawing; “2” means wire rod for special applications.If steels are ordered ac
36、cording to the chemical composition, # indicates the values to be inserted by the purchaser according to the steel names as designated in Table 1, first column.The designations of comparable steel grades in national or regional standards are provided in Annex A.Steels can also be ordered according t
37、o tensile strength. The mid-point of the required ultimate tensile strength (UTS) range shall be indicated as a suffix to the grade designation, e.g. C#D2 1020, where the required mid-point of the UTS is 1 020 MPa. “#” means “to be left blank” since the carbon content is at the discretion of the sup
38、plying mill, and the supplying mill indicates the exact number of # based on the grade designation until shipment. The grade designation shall be in accordance with ISO 16120-2:2017, Table 1.EN ISO 16120-4:2017 (E) 5 DIN EN ISO 16120-4:2017-09 5 Requirements5.1 GeneralGeneral requirements are given
39、in ISO 16120-1.5.2 Chemical composition and mechanical propertiesFor heat analysis, the values shown in Table 1 shall apply. If product analysis is required, the permissible deviations of the product analysis relative to the specified value of the heat analysis are given in Table 2.Table 1 Chemical
40、analysis (heat analysis)Steel gradeaHeat analysisCb%Sic,d%Mne%Pf%max.Sf%max.Crg%max.Nig%max.Mo%max.Cug,h%max.Ali%max.Nj%max.C3D2 0,05 0,300,30 to 0,500,020 0,025 0,10 0,10 0,05 0,15 0,01 0,007C5D2 0,07 0,300,30 to 0,500,020 0,025 0,10 0,10 0,05 0,15 0,01 0,007C8D2 0,06 to 0,10 0,300,30 to 0,500,020
41、0,025 0,10 0,10 0,05 0,15 0,01 0,007C10D2 0,08 to 0,12 0,300,30 to 0,500,020 0,025 0,10 0,10 0,05 0,15 0,01 0,007C12D2 0,10 to 0,14 0,300,30 to 0,500,020 0,025 0,10 0,10 0,05 0,15 0,01 0,007C15D2 0,13 to 0,17 0,300,30 to 0,500,020 0,025 0,10 0,10 0,05 0,15 0,01 0,007C18D2 0,16 to 0,20 0,300,30 to 0,
42、500,020 0,025 0,10 0,10 0,05 0,15 0,01 0,007C20D2 0,18 to 0,23 0,300,30 to 0,500,020 0,025 0,10 0,10 0,05 0,15 0,01 0,007C26D2 0,24 to 0,290,10 to 0,300,50 to 0,700,020 0,025 0,10 0,10 0,03 0,15 0,01 0,007C32D2 0,30 to 0,340,10 to 0,300,50 to 0,700,020 0,025 0,10 0,10 0,03 0,15 0,01 0,007C36D2 0,34
43、to 0,380,10 to 0,300,50 to 0,700,020 0,025 0,10 0,10 0,03 0,15 0,01 0,007C38D2 0,36 to 0,400,10 to 0,300,50 to 0,700,020 0,025 0,10 0,10 0,03 0,15 0,01 0,007C40D2 0,38 to 0,420,10 to 0,300,50 to 0,700,020 0,025 0,10 0,10 0,03 0,15 0,01 0,007C42D2 0,40 to 0,440,10 to 0,300,50 to 0,700,020 0,025 0,10
44、0,10 0,03 0,15 0,01 0,007C46D2 0,44 to 0,480,10 to 0,300,50 to 0,700,020 0,025 0,10 0,10 0,03 0,15 0,01 0,007C48D2 0,46 to 0,500,10 to 0,300,50 to 0,700,020 0,025 0,10 0,10 0,03 0,15 0,01 0,007EN ISO 16120-4:2017 (E) 6 DIN EN ISO 16120-4:2017-09 Steel gradeaHeat analysisCb%Sic,d%Mne%Pf%max.Sf%max.Cr
45、g%max.Nig%max.Mo%max.Cug,h%max.Ali%max.Nj%max.C50D2 0,48 to 0,520,10 to 0,300,50 to 0,700,020 0,025 0,10 0,10 0,03 0,15 0,01 0,007C52D2 0,50 to 0,540,10 to 0,300,50 to 0,700,020 0,025 0,10 0,10 0,03 0,15 0,01 0,007C56D2 0,54 to 0,580,10 to 0,300,50 to 0,700,020 0,025 0,10 0,10 0,03 0,15 0,01 0,007C5
46、8D2 0,56 to 0,600,10 to 0,300,50 to 0,700,020 0,025 0,10 0,10 0,03 0,15 0,01 0,007C60D2 0,58 to 0,620,10 to 0,300,50 to 0,700,020 0,025 0,10 0,10 0,03 0,15 0,01 0,007C62D2 0,60 to 0,640,10 to 0,300,50 to 0,700,020 0,025 0,10 0,10 0,03 0,15 0,01 0,007C66D2 0,64 to 0,680,10 to 0,300,50 to 0,700,020 0,
47、025 0,10 0,10 0,03 0,15 0,01 0,007C68D2 0,66 to 0,700,10 to 0,300,50 to 0,700,020 0,025 0,10 0,10 0,03 0,15 0,01 0,007C70D2 0,68 to 0,720,10 to 0,300,50 to 0,700,020 0,025 0,10 0,10 0,03 0,15 0,01 0,007C72D2 0,70 to 0,740,10 to 0,300,50 to 0,700,020 0,025 0,10 0,10 0,03 0,15 0,01 0,007C76D2 0,74 to
48、0,780,10 to 0,300,50 to 0,700,020 0,025 0,10 0,10 0,03 0,15 0,01 0,007C78D2 0,76 to 0,800,10 to 0,300,50 to 0,700,020 0,025 0,10 0,10 0,03 0,15 0,01 0,007C80D2 0,78 to 0,820,10 to 0,300,50 to 0,700,020 0,025 0,10 0,10 0,03 0,15 0,01 0,007C82D2 0,80 to 0,840,10 to 0,300,50 to 0,700,020 0,025 0,10 0,1
49、0 0,03 0,15 0,01 0,007C86D2 0,84 to 0,880,10 to 0,300,50 to 0,700,020 0,025 0,10 0,10 0,03 0,15 0,01 0,007C88D2 0,86 to 0,900,10 to 0,300,50 to 0,700,020 0,025 0,10 0,10 0,03 0,15 0,01 0,007Table 1 (continued)EN ISO 16120-4:2017 (E) 7 DIN EN ISO 16120-4:2017-09 Steel gradeaHeat analysisCb%Sic,d%Mne%Pf%max.Sf%max.Crg%max.Nig%max.Mo%max.Cug,h%max.Ali%max.Nj%max.C92D2 0,90 to 0,940,10 to 0,300,50 to 0,700,020 0,025 0,1
