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1、BRITISH STANDARD BS EN 10270-1:2001 Steel wire for mechanical springs Part 1: Patented cold drawn unalloyed spring steel wire The European Standard EN 10270-1:2001 has the status of a British Standard ICS 77.140.25 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN 10270-1:
2、2001 This British Standard, having been prepared under the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 May 2001 BSI 05-2001 ISBN 0 580 37248 0 National foreword This British Standard is the official English l
3、anguage version of EN 10270-1:2001. It supersedes BS 5216:1991 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee ISE/26, Steel wire, which has the responsibility to: Cross-references A list of organizations represented on this committee can be obtained
4、on request to its secretary. The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Sta
5、ndards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirer
6、s to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a
7、front cover, an inside front cover, the EN title page, pages 2 to 26, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments EUROPEAN STANDARD NORME EUROPENNE EURO
8、PISCHE NORM EN 10270-1 April 2001 ICS 77.140.25; 77.140.65 English 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
9、: Patentiert-gezogener unlegierter Federstahldraht This European Standard was approved by CEN on 19 February 2001. 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 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 tra
11、nslation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland,
12、Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2001 CENAll rights of exploitation in any form
13、and by any means reserved worldwide for CEN national Members. Ref. No. EN 10270-1:2001 E Page 2 EN 10270-1:2001 BSI 05-2001 Contents Page Foreword.3 1Scope .4 2Normative references .4 3Terms and definitions.5 4Classification and designation5 4.1Classification.5 4.2Designation5 5Information to be sup
14、plied by the purchaser.6 6Requirements6 6.1Material.6 6.2Form of delivery7 6.3Coating and surface finish.7 6.4Mechanical properties7 6.5Technological properties .13 6.6Supply conditions of wire on coils/reels and spools14 6.7Surface quality 17 6.8Dimensions and dimensional tolerances.18 7Testing and
15、 inspection.19 7.1Inspection and inspection documents .19 7.2Extent of testing for specific inspection 20 7.3Sampling20 7.4Test methods.20 7.5Retests .22 8Marking and packaging22 Annex A (informative) Additional information24 Page 3 EN 10270-1:2001 BSI 05-2001 Foreword This European Standard has bee
16、n prepared by Technical Committee ECISS/TC 30, Steel wires, the Secretariat of which is held by BSI. 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 October 2001, and conflicting national standard
17、s shall be withdrawn at the latest by October 2001. 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. Acco
18、rding to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portuga
19、l, Spain, Sweden, Switzerland and the United Kingdom. Page 4 EN 10270-1:2001 BSI 05-2001 1 Scope 1.1This part of EN 10270 applies to patented cold drawn unalloyed steel wire of circular cross-section for the manufacture of mechanical springs for static duty and dynamic duty applications. 1.2In addit
20、ion to this part of EN 10270 the general technical delivery requirements of EN 10021 are applicable. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the tex
21、t and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applie
22、s (including amendments). EN 10002-1, Metallic materials Tensile test Part 1: Method of test (at ambient temperature). EN 10016-1, Non-alloy steel rod for drawing and/or cold rolling Part 1: General requirements. EN 10016-2, Non-alloy steel rod for drawing and/or cold rolling Part 2: Specific requir
23、ements for general purposes. EN 10016-4, Non-alloy steel rod for drawing and/or cold rolling Part 4: Specific requirements for rod for special applications. EN 10021, General technical delivery requirements for steel and iron products. EN 10052, Vocabulary of heat treatment terms for ferrous product
24、s. EN 10204, Metallic products Types of inspection documents. EN 10218-1:1994, Steel wire and wire products General Part 1: Test methods. EN 10218-2:1996, Steel wire and wire products General Part 2: Dimensions and tolerances. EN 10244-2, Non-ferrous metallic coatings on wire Part 2: Zinc and zinc a
25、lloy coatings for steel wire and products. CR 10261, Iron and steel Review of available methods of chemical analysis. EN ISO 377, Steel and steel products Location and preparation of samples and test pieces for mechanical testing. ISO 14284, Steel and iron Sampling and preparation of samples for the
26、 determination of chemical composition. EU 1041), Determination of the decarburization depth of unalloyed and low alloyed structural steels. 1) It may be agreed at the time of ordering, until this EURONORM has been adopted as a European Standard, that either this EURONORM or a corresponding national
27、 standard should be applied. Page 5 EN 10270-1:2001 BSI 05-2001 3 Terms and definitions For the purposes of this standard the following terms and definitions apply. 3.1 patented cold drawn wire wire drawn to size by cold deformation of a starting material that has been subjected to a thermal treatme
28、nt of patenting (see EN 10052) 4 Classification and designation 4.1 Classification The grade of spring wire used depends on the stress level and the nature of the duty. Where springs are subjected to static stresses or infrequent dynamic loading, a wire grade for static duty (S) shall be used. In th
29、e 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 (D) shall be used. Depending on the stress level, spring wire is manufactured in three tensile strength grades: low, medium and high. Table
30、1 gives an overview of the different grades. Table 1 Spring wire grades Tensile strength aStaticDynamic Low tensile strengthSL- Medium tensile strengthSMDM High tensile strengthSHDH a For specific applications another tensile strength may be agreed. 4.2 Designation For products supplied according to
31、 this standard the designation shall state in the following order: ? the term: spring wire; ? the number of this European Standard: EN 10270-1; ? the wire grade (see Table 1); ? the required nominal diameter selected from Table 3; ? the coating indicated by its abbreviation (see 6.3). EXAMPLE: Stand
32、ard designation of a steel spring wire according to this standard of spring wire grade SM, with a nominal diameter of 2,50 mm, phosphate coated: Spring wire EN 10270-1 - SM - 2,50 ph. Page 6 EN 10270-1:2001 BSI 05-2001 5 Information to be supplied by the purchaser The purchaser shall clearly state i
33、n his enquiry or order the product and following information: a) the desired quantity; b) the number of this European Standard: EN 10270-1; c) wire grade, coating and surface finish (see 6.3); d) the nominal wire diameter; e) the form of delivery and unit mass (see 6.2); f) the type of inspection do
34、cument; g) any particular agreement made. EXAMPLE5 t spring steel wire EN 10270-1 - SM - 2,50 ph on spools of about 500 kg inspection document EN 10204-3.1.B 6 Requirements 6.1 Material 6.1.1 General Steel spring wire shall be made from steel corresponding to EN 10016-1 with in addition: ? for SL, S
35、M and SH:EN 10016-2; ? for DM and DH:EN 10016-4. 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 product analysis from the heat analysis shall be in accordance with EN 10016-2 and
36、 EN 10016-4 respectively. Page 7 EN 10270-1:2001 BSI 05-2001 Table 2 Chemical composition, % by mass GradeC aSiMn bP max. S max. Cu max. SL, SM, SH0,35-1,000,10-0,300,50-1,200,0350,0350,20 DM, DH0,45-1,000,10-0,300,50-1,200,0200,0250,12 a Such a wide range is stipulated to accommodate the whole rang
37、e of sizes. For individual sizes the carbon range is substantially more restricted. b The range of manganese content in the table is wide to cope with various processing situations and the broad size range. The actual figures per size shall be more restricted. The addition of micro-alloying elements
38、 may be agreed between the manufacturer and the purchaser. NOTESome diameter ranges require particular attention for residuals. Therefore no figures are mentioned for chromium, nickel, molybdenum, tin, etc., leaving room for special arrangements between purchaser and supplier, dependent on their mut
39、ual 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, individualized or on carriers, or a spool or spoolless core or as straight lengths. Unless otherwise agreed at the time of ordering, the form of de
40、livery will be coils; straight lengths shall be supplied in bundles. 6.3 Coating and surface finish The spring wire may be supplied phosphate 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 be
41、tween the purchaser and the supplier (see annex A). If no specific surface finish is specified, the type of finish shall be at the manufacturers 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) an
42、d reduction in area after fracture (Z), the wire grades shall satisfy the values listed in Table 3. Reduction of area shall be measured only for wire diameter 0,80 mm and above. The range of tensile strength values within a unit package shall not exceed the values of Table 4. Page 8 EN 10270-1:2001
43、BSI 05-2001 Table 3 Mechanical properties a b and quality requirements for wire grades SL, SM, DM, SH and DH 12345678910111213 Wire diameter daMassTensile strength Rm c d eMinimumMinimumPermissiblePermissibleWire kg/1 000 mFor wire gradesreduction innumber ofdepth ofdecarburizationdiameter area afte
44、rtwists in thesurfacedepth for wiresd fracture Ztorsion test fordefects forgrades DM, DH(nominal for wirewire gradeswire gradessize) gradesSL, SM, SH,DM, DH SL, SM, SH,DM and DH DM and DH NominalPermissibleSLSMDMSHDHf sizedeviationsMPaMPaMPaMPaMPa% d mmmmmm mmmm 0,050,015 42 800 to 3 5200,05 0,060,0
45、22 22 800 to 3 5200,06 0,07 0,0030,030 22 800 to 3 5200,07 0,080,039 52 800 to 3 4800,08 0,090,049 92 800 to 3 4300,09 0,100,061 72 800 to 3 3800,10 0,110,074 62 800 to 3 3500,11 0,12 0,0040,088 82 800 to 3 3200,12 0,140,1212 800 to 3 2500,14 0,160,1582 800 to 3 200coiling test as- g- g0,16 0,180,20
46、02 800 to 3 160specified in0,18 0,20 0,0050,2472 800 to 3 1107.4.30,20 0,220,2982 770 to 3 0800,22 0,250,3852 720 to 3 0100,25 0,280,4882 680 to 2 9700,28 0,300,5552 370 to 2 6502 370 to 2 6502 660 to 2 9402 660 to 2 9400,30 0,32 0,0080,6312 350 to 2 6302 350 to 2 6302 640 to 2 9202 640 to 2 9200,32
47、 0,340,7132 330 to 2 6002 330 to 2 6002 610 to 2 8902 610 to 2 8900,34 0,360,7992 310 to 2 5802 310 to 2 5802 590 to 2 8702 590 to 2 8700,36 0,380,8902 290 to 2 5602 290 to 2 5602 570 to 2 8502 570 to 2 8500,38 Page 9 EN 10270-1:2001 BSI 05-2001 Table 3 Mechanical properties a b and quality requirem
48、ents for wire grades SL, SM, DM, SH and DH (continued) 12345678910111213 Wire diameter daMassTensile strength Rm c d eMinimumMinimumPermissiblePermissibleWire kg/1 000 mFor wire gradesreduction innumber ofdepth ofdecarburizationdiameter area aftertwists in thesurfacedepth for wired fracture Ztorsion
49、 test fordefects forgrades DM, DH(nominal for wirewire gradeswire gradessize) gradesSL, SM, SH,DM, DH SL, SM, SH,DM and DH DM and DH NominalPermissibleSLSMDMSHDHf sizedeviationsMPaMPaMPaMPaMPa% d mmmmmm mmmm 0,400,9852 270 to 2 5502 270 to 2 5502 560 to 2 8302 560 to 2 8300,40 0,431,142 250 to 2 5202 250 to 2 5202 530 to 2 8002 530 to 2 8000,43 0,451,252 240 to 2 5002 240 to 2 5002 510 to 2 7802 510 to 2 7800,45 0,481,422 220 to 2 4802 220 to 2 4802 490 to 2 7602 490 to 2 7600,48 0,50 0,0081,542 200 to 2