1、September 2017 English price group 13No 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 77.140.25!%mun“2748275www.din.
2、deDIN EN 10270-1Steel wire for mechanical springs Part 1: Patented cold drawn unalloyed spring steel wire;English version EN 102701:2011+A1:2017,English translation of DIN EN 10270-1:2017-09Stahldraht fr Federn Teil 1: Patentiert gezogener unlegierter Federstahldraht;Englische Fassung EN 102701:2011
3、+A1:2017,Englische bersetzung von DIN EN 10270-1:2017-09Fils en acier pour ressorts mcaniques Partie 1: Fils pour ressorts en acier non alli, patents, trfils froid;Version anglaise EN 102701:2011+A1:2017,Traduction anglaise de DIN EN 10270-1:2017-09SupersedesDIN EN 102701:201201www.beuth.deDocument
4、comprises 33 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.09.17 DIN EN 10270-1:2017-09 2 A comma is used as the decimal marker. National foreword This document (EN 10270-1:2011+A1:2017) has been prepared by Technical Committ
5、ee ECISS/TC 106 “Wire rod and wires” (Secretariat: AFNOR, France). The responsible German body involved in its preparation was DIN-Normenausschuss Eisen und Stahl (DIN Standards Committee Iron and Steel), Working Committee NA 021-00-08-04 UA “Patented and tempered spring steel wire”. Amendments This
6、 standard differs from DIN EN 10270-1:2012-01 as follows: a) the normative references have been modified; b) in Table 2 “Chemical composition”, changes to the content have been made; c) in Table 3 “Mechanical composition”, changes to the content have been made; d) Table 10 has been modified; e) the
7、standard has been editorially revised. Previous editions DIN 2076: 1944-02, 1964x-03, 1984-12 DIN 17223: 1955-04 DIN 17223-1: 1964-03, 1984-12 DIN EN 10270-1: 2001-12, 2012-01 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 10270-1:2011+A1 May 2017 ICS 77.140.25 Supersedes EN 10270-1:2011Englis
8、h Version Steel wire for mechanical springs - Part 1: Patented cold drawn unalloyed spring steel wire Fils en acier pour ressorts mcaniques - Partie 1: Fils pour ressorts en acier non alli, patents, trfils froid Stahldraht fr Federn - Teil 1: Patentiert gezogener unlegierter Federstahldraht This Eur
9、opean Standard was approved by CEN on 10 September 2011 and includes Amendment 1 approved by CEN on 24 March 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
10、alteration. Up-to-date lists and bibliographical references concerning 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
11、 made by translation under the responsibility of a CEN member into 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, E
12、stonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, 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 COMMITT
13、EE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES 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 10270-1:2011+A1:2017 EEN 102
14、70-1:2011+A1:2017 (E) 2 Contents Page European foreword . 4 1 Scope 5 2 Normative references 5 3 Terms and definitions . 6 4 Classification . 6 5 Information to be supplied by the purchaser . 6 6 Requirements . 7 6.1 Material . 7 6.1.1 General 7 6.1.2 Chemical composition . 7 6.2 Form of delivery 7
15、6.3 Coating and surface finish 8 6.4 Mechanical properties . 8 6.5 Technological properties 18 6.5.1 Coiling test 18 6.5.2 Simple torsion test . 18 6.5.3 Wrapping test 18 6.5.4 Simple bend test . 18 6.6 Supply conditions of wire on coils/reels and spools . 19 6.6.1 General . 19 6.6.2 Coil size 19 6.
16、6.3 Cast of wire . 19 6.6.4 Helix cast of wire 19 6.6.5 Other tests for cast of wire 20 6.7 Surface quality. 20 6.8 Dimensions and dimensional tolerances 21 6.8.1 Dimensional tolerances . 21 6.8.2 Out of roundness 24 7 Testing and inspection . 24 7.1 Inspection and inspection documents 24 7.2 Extent
17、 of testing for specific inspection . 24 7.3 Sampling 24 7.4 Test methods . 24 7.4.1 Chemical composition 24 7.4.2 Tensile test . 24 7.4.3 Coiling test 24 7.4.4 Wrapping test 25 7.4.5 Simple torsion test . 25 7.4.6 Simple bend test . 25 7.4.7 Surface defects 25 7.4.8 Decarburization 25 7.4.9 Diamete
18、r 25 7.4.10 Zinc and zinc/aluminium coating. 26 DIN EN 10270-1:2017-09 EN 10270-1:2011+A1:2017 (E) 3 7.4.11 Adherence of coating . 26 7.5 Retests 26 8 Marking and packaging 26 Annex A (informative) Additional information 29 A.1 Definition of surface condition of the wire 29 A.1.1 Drawing condition 2
19、9 A.1.2 Surface treatment . 29 A.1.3 Abbreviations . 29 A.2 Physical characteristics at room temperature 30 A.2.1 Modulus of elasticity and shear modulus 30 A.2.2 Density 30 A.3 Accuracy of measuring instruments 30 A.4 Tensile strength formula . 30 A.5 Indication for the use of cold drawn spring ste
20、el wire . 31 DIN EN 10270-1:2017-09 EN 10270-1:2011+A1:2017 (E) 4 European foreword This document (EN 10270-1:2011+A1:2017) has been prepared by Technical Committee ECISS/TC 106 “Wire rod and wires”, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a nat
21、ional standard, either by publication of an identical text or by endorsement, at the latest by November 2017, and conflicting national standards shall be withdrawn at the latest by November 2017. Attention is drawn to the possibility that some of the elements of this document may be the subject of p
22、atent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document includes Amendment 1 approved by CEN on 24 March 2017. This document supersedes !EN 10270-1:2011“. The start and finish of text introduced or altered by amendment is indicated
23、in the text by tags !“. This European Standard for steel wire for mechanical springs is composed of the following parts: Part 1: Patented cold drawn unalloyed spring steel wire; Part 2: Oil hardened and tempered spring steel wire; Part 3: Stainless spring steel wire. According to the CEN-CENELEC Int
24、ernal 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, Hungary, Iceland,
25、Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 10270-1:2017-09 EN 10270-1:2011+A1:2017 (E) 5 1 Scope 1.1 This European Standard applies to patented col
26、d drawn unalloyed steel wire of circular cross-section for the manufacture of mechanical springs for static duty and dynamic duty applications. 1.2 In addition to this European Standard, the general technical delivery requirements of EN 10021 are applicable. 2 Normative references The following refe
27、renced 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. EN 10021, General technical delivery conditions for steel products
28、EN 10052, Vocabulary of heat treatment terms for ferrous products EN 10204:2004, Metallic products Types of inspection documents EN 10218-1:2011, Steel wire and wire products General Part 1: Test methods EN 10218-2, Steel wire and wire products General Part 2: Wire dimensions and tolerances EN 10244
29、-2:2009, Steel wire and wire products Non-ferrous metallic coatings on steel wire Part 2: Zinc or zinc alloy coatings ! CEN/TR 10261, Iron and steel European standards for the determination of chemical composition EN ISO 377, Steel and steel products Location and preparation of samples and test piec
30、es for mechanical testing (ISO 377) EN ISO 3887, Steels Determination of depth of decarburization (ISO 3887) EN ISO 6892-1, Metallic materials Tensile testing Part 1: Method of test at room temperature (ISO 6892-1) EN ISO 14284, Steel and iron Sampling and preparation of samples for the determinatio
31、n of chemical composition (ISO 14284) EN ISO 16120-1, Non-alloy steel rod for conversion to wire Part 1: General requirements (ISO 16120-1) EN ISO 16120-2, Non-alloy steel wire rod for conversion to wire Part 2: Specific requirements for general-purpose wire rod (ISO 16120-2) EN ISO 16120-4, Non-all
32、oy steel wire rod for conversion to wire Part 4: Specific requirements for wire rod for special applications (ISO 16120-4)“ DIN EN 10270-1:2017-09 EN 10270-1:2011+A1:2017 (E) 6 3 Terms and definitions For the purposes of this document, the following !term and definition applies“. 3.1 patented cold d
33、rawn wire wire drawn to size by cold deformation of a starting material that has been subjected to a thermal treatment of patenting (see EN 10052), giving structure suitable for subsequent rolling or drawing 4 Classification The grade of spring wire used depends on the stress level and the nature of
34、 the duty. Where springs are subjected to static stresses or infrequent dynamic loading a wire grade for static duty (S) shall be used. In the other cases with frequent or predominantly dynamic loading and where small coiling ratios or severe bending radius is required, a wire grade for dynamic duty
35、 (D) shall be used. Depending on the stress level, spring wire is manufactured in 3 tensile strength grades: !low“, medium and high. Table 1 gives an overview of the different grades. Table 1 Spring wire grades Tensile strength aStatic Dynamic Low tensile strength SL Medium tensile strength SM DM Hi
36、gh tensile strength SH DH aFor specific applications another tensile strength may be agreed. 5 Information to be supplied by the purchaser The purchaser shall clearly state in his enquiry or order the product and following information: a) the desired quantity; b) the term spring steel wire or straig
37、htened and cut lengths; c) the number of this European standard: EN 10270-1; d) the steel grade (see Tables 1 and 2); e) the nominal wire diameter selected from Table 3 and for cut length the length and the length tolerance class (see Table 7); f) the coating indicated by its abbreviation and surfac
38、e finish (see 6.3); g) the form of delivery and unit mass (see 6.2); h) the type of inspection document !(see 7.1)“; i) any particular agreement. DIN EN 10270-1:2017-09 EN 10270-1:2011+A1:2017 (E) 7 EXAMPLE 5 t patented cold drawn tempered spring steel wire according to this standard, grade SM, nomi
39、nal diameter 2,50 mm, phosphate coated on spools of about 300 kg; inspection document 3.1 according to EN 10204:2004: 5 t spring steel wire EN 10270-1 SM-2,50 ph on spools of about 300 kg; EN 10204:2004 3.1. 6 Requirements 6.1 Material 6.1.1 General !Steel spring wire shall be made from steel grades
40、 according to: for SL, SM and SH EN ISO 16120-2; for DM and DH EN ISO 16120-4. For general requirements EN ISO 16120-1 applies.“ 6.1.2 Chemical composition The chemical composition according to the heat analysis shall comply with the limit values shown in Table 2. The permissible deviation of the pr
41、oduct analysis from the heat analysis shall be in accordance with EN ISO 16120-2 and EN ISO 16120-4 respectively. ! Table 2 Chemical composition, % by mass Grade CaSi MnbP S Cu SL, SM, SH 0,35 to 1,00 0,10 to 0,30 0,40 to 1,20 0,035 max. 0,035 max. 0,20 max. DM, DH 0,45 to 1,00 0,10 to 0,30 0,40 to
42、1,20 0,020 max. 0,025 max. 0,12 max. aSuch a wide range is stipulated to accommodate the whole range of sizes. For individual sizes the carbon range is substantially more restricted. bFor the manganese content, a different range from the one indicated in the table may be agreed at the time of orderi
43、ng, with a maximum not exceeding 1,20 % and with a minimum range of 0,20 %.“ The addition of micro-alloying elements may be agreed between the manufacturer and the purchaser. NOTE Some diameter ranges require particular attention for residuals. Therefore no figures are mentioned for chromium, nickel
44、, molybdenum, tin, etc., leaving room for special arrangements between Purchaser and Supplier, dependent on their mutual processing conditions. This is also the case for the aluminium content. 6.2 Form of delivery The wire shall be delivered in unit packages of a coil (singles, carriers or formers),
45、 spools, spoolless cores or as straight lengths. Unless otherwise agreed at the time of ordering, the form of delivery will be coils; straight lengths shall be supplied in bundles. DIN EN 10270-1:2017-09 EN 10270-1:2011+A1:2017 (E) 8 6.3 Coating and surface finish The spring wire may be supplied pho
46、sphate coated (ph) either dry drawn or wet drawn, copper coated (cu), zinc (Z) or zinc/aluminium (ZA) coated. Other coatings, considered as special, can be agreed between the purchaser and the supplier (see Annex A). If no specific surface finish is specified, the type of finish shall be at the manu
47、facturers discretion. In addition the wire can be ordered with an oiled surface for all surface finishes. 6.4 Mechanical properties For the tensile strength (Rm) and reduction in area after fracture (Z) the wire grades shall satisfy the values listed in Table 3. !Reduction of area shall be measured
48、only for wire diameter 0,80 mm d.“ The range of tensile strength values within a unit package shall not exceed the values of Table 4. DIN EN 10270-1:2017-09 EN 10270-1:2011+A1:2017 (E) 9 Table 3 Mechanical properties aand quality requirements for wire grades SL, SM, DM, SH and DH 1 2 3 4 5 6 7 8 9 1
49、0 11 12 Wire diameter d Tensile strength Rm b c dMinimum reduction in area after fracture Z for wire grades SL, SM, SH, DM and DH Minimum number of twists in the torsion test Nt for wire grades SL, SM, SH, DM and DH cPermissible depth of surface defects for wire grades DM, DH Permissible decarburization depth for wire grades DM, DH Mass hkg/1 000 m For wire grades Nominal size Permissible deviations SL SM DM SH DH emm m
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