EN 10270-1:2001
(Main)Steel wire for mechanical springs - Part 1: Patented cold drawn unalloyed spring steel wire
Steel wire for mechanical springs - Part 1: Patented cold drawn unalloyed spring steel wire
1.1 This 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.
1.2 In addition to this part of EN 10270 the general technical delivery requirements of EN 10021 are applicable.
Stahldraht für Federn - Teil 1: Patentiert-gezogener unlegierter Federstahldraht
Anwend ngsbereich
1.1 Dieser Teil von EN 10270 gilt für patentiert-gezogenen unlegierten Stahldraht mit rundem Querschnitt
zur Herstellung von Federn für statische und dynamische Beanspruchungen.
1.2 Zusätzlich zu diesem Teil der EN 10270 gelten die allgemeinen technischen Lieferbedingungen nach
EN 10021.
Fils en acier pour ressorts mécaniques - Partie 1: Fils pour ressorts en acier non allié, patentés, tréfilés à froid
Domaine d'application
1.1 La présente partie 1 de l'EN 10270 s'applique aux fils, en acier non allié, patentés et tréfilés à froid, de section circulaire, utilisés pour la fabrication de ressorts mécaniques pour usages statiques et dynamiques.
1.2 Les conditions générales techniques de livraison données dans l'EN 10021 s'ajoutent aux dispositions de la présente partie de l'EN 10270.
Jeklena žica za vzmeti - 1. del: Patentirana hladno vlečena nelegirana jeklena žica za vzmeti
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Stahldraht für Federn - Teil 1: Patentiert-gezogener unlegierter FederstahldrahtFils en acier pour ressorts mécaniques - Partie 1: Fils pour ressorts en acier non allié, patentés, tréfilés a froidSteel wire for mechanical springs - Part 1: Patented cold drawn unalloyed spring steel wire77.140.65Jeklene žice, jeklene vrvi in verigeSteel wire, wire ropes and link chains77.140.25Vzmetna jeklaSpring steelsICS:Ta slovenski standard je istoveten z:EN 10270-1:2001SIST EN 10270-1:2002en01-september-2002SIST EN 10270-1:2002SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 10270-1April 2001ICS 77.140.25; 77.140.65English versionSteel wire for mechanical springs - Part 1: Patented cold drawnunalloyed spring steel wireFils en acier pour ressorts mécaniques - Partie 1: Fils pourressorts en acier non allié, patentés, tréfilés à froidStahldraht für Federn - Teil 1: Patentiert-gezogenerunlegierter FederstahldrahtThis 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 EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards 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 translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2001 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 10270-1:2001 ESIST EN 10270-1:2002
Page 2EN 10270-1:2001ContentsForeword.31Scope.42Normative references.43Terms and definitions.54Classification and designation.54.1Classification.54.2Designation.55Information to be supplied by the purchaser.66Requirements.66.1Material.66.2Form of delivery.76.3Coating and surface finish.76.4Mechanical properties.76.5Technological properties.136.6Supply conditions of wire on coils/reels and spools.146.7Surface quality.176.8Dimensions and dimensional tolerances.187Testing and inspection.197.1Inspection and inspection documents.197.2Extent of testing for specific inspection.207.3Sampling.207.4Test methods.207.5Retests.228Marking and packaging.22Annex A (informative) Additional information.24SIST EN 10270-1:2002
Page 3EN 10270-1:2001ForewordThis European Standard has been prepared by Technical Committee ECISS/TC 30 "Steel wires ", thesecretariat of which is held by BSI.This European Standard shall be given the status of a national standard, either by publication of anidentical text or by endorsement, at the latest by October 2001, and conflicting national standardsshall 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 wirePart 2 : Oil hardened and tempered spring steel wirePart 3 : Stainless spring steel wireAccording to the CEN/CENELEC Internal Regulations, the national standards organizations of thefollowing countries are bound to implement this European Standard: Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg,Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.SIST EN 10270-1:2002
Page 4EN 10270-1:20011 Scope1.1This 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 addition to this part of EN
10270 the general technical delivery requirements of EN 10021are applicable.2 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from otherpublications. These normative references are cited at the appropriate places in the text and thepublications are listed hereafter. For dated references, subsequent amendments to or revisions of anyof these publications apply to this European Standard only when incorporated in it by amendment orrevision. For undated references the latest edition of the publication referred to applies (includingamendments).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 requirementsEN 10016-2, Non alloy steel rod for drawing and/or cold rolling — Part 2: Specific requirements forgeneral purposesEN 10016-4, Non alloy steel rod for drawing and/or cold rolling — Part 4: Specific requirements for rodfor special applicationsEN 10021, General technical delivery requirements for steel and iron productsEN 10052, Vocabulary of heat treatments terms for ferrous productsEN 10204, Metallic products — Types of inspection documentsEN 10218-1:1994, Steel wire and wire products — General – Part 1: Test methodsEN 10218-2:1996, Steel wire and wire products — General – Part 2: Dimensions and tolerancesEN 10244-2, Non-ferrous metallic coatings on wire — Part 2: Zinc and zinc alloy coatings for steelwire and productsCR 10261, Iron and steel — Review of available methods of chemical analysisEN ISO 377, Steel and steel products – Location and preparation of samples and test pieces formechanical testingISO 14284, Steel and iron — Sampling and preparation of samples for the determination of chemicalcompositionEU 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 standard should be appliedSIST EN 10270-1:2002
Page 5EN 10270-1:20013 Terms and definitionsFor the purposes of this standard the following term and definition apply:3.1patented cold drawn wirewire drawn to size by cold deformation of a starting material that has been subjected to a thermaltreatment of patenting (see EN 10052)4 Classification and designation4.1 ClassificationThe grade of spring wire used depends on the stress level and the nature of the duty. Where springsare subjected to static stresses or infrequent dynamic loading a wire grade for static duty (S) shall beused. In the other cases with frequent or predominantly dynamic loading and where small coilingratios 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 3 tensile strength grades: Low, mediumand high.Table 1 gives an overview of the different grades.Table 1 — Spring wire gradesTensile strength aStaticDynamicLow tensile strengthSL-Medium tensile strengthSMDMHigh tensile strengthSHDHa For specific applications another tensile strength may be agreed.4.2 DesignationFor products supplied according to 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: Standard designation of a steel spring wire according to this standard of spring wire gradeSM, with a nominal diameter of 2,50 mm, phosphate coated :Spring wire EN 10270-1 - SM - 2,50 ph.SIST EN 10270-1:2002
Page 6EN 10270-1:20015 Information to be supplied by the purchaserThe purchaser shall clearly state in 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 document;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.B6 Requirements6.1 Material6.1.1 GeneralSteel spring wire shall be made from steel corresponding to EN 10016-1 with in addition for SL, SM and SHEN 10016-2 for DM and DHEN 10016-46.1.2 Chemical compositionThe chemical composition according to the heat analysis shall comply with the limit values shown inTable 2. The permissible deviation of the product analysis from the heat analysis shall be inaccordance with EN 10016-2 and EN 10016-4 respectively.SIST EN 10270-1:2002
Page 7EN 10270-1:2001Table 2 — Chemical composition, % by massGradeC aSiMn bPSCumax.max.max.SL, SM, SH0,35-1,000,10-0,300,50-1,200,0350,0350,20DM, DH0,45-1,000,10-0,300,50-1,200,0200,0250,12a Such a wide range is stipulated to accommodate the whole range of sizes. For individual sizesthe carbon range is substantially more restricted.b The range of manganese content in the table is wide to cope with various processing situations andthe broad size range. The actual figures per size shall be more restricted.The addition of micro-alloying elements may be agreed between the manufacturer and the purchaser.NOTESome diameter ranges require particular attention for residuals. Therefore no figures are mentioned forchromium, nickel, 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 deliveryThe wire shall be delivered in unit packages of a coil, individualized or on carriers, or a spool orspoolless core or as straight lengths.Unless otherwise agreed at the time of ordering, the form of delivery will be coils; straight lengths shallbe supplied in bundles.6.3 Coating and surface finishThe 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 between the purchaser and the supplier(see annex A).If no specific surface finish is specified, the type of finish shall be at the manufacturer’s discretion.In addition the wire can be ordered with an oiled surface for all surface finishes.6.4 Mechanical propertiesFor the tensile strength (Rm) and reduction in area after fracture (Z) the wire grades shall satisfy thevalues listed in Table 3. Reduction of area shall be measured only for wire diameter 0,80 mm andabove.The range of tensile strength values within a unit package shall not exceed the values of Table 4.SIST EN 10270-1:2002
Page 8EN 10270-1:2001Table 3 — Mechanical properties a b and quality requirements for wire grades SL, SM, DM, SH and DH12345678910111213Wire diameter daMassTensile strength Rm c d eMinimumMinimumPermissiblePermissibleWirekg/1000 mFor wire gradesreduction innumber ofdepth ofdecarburi-diameter darea aftertwists in thesurfacezation depth(nominalfracture Ztorsion test fordefects forfor wiresize)for wirewire gradeswire gradesgradesgradesSL, SM, SH, DMDM, DHDM, DHSL, SM, SH,and DHDM and DHNominalPermissibleSLSMDMSHDHfsizeDeviationsMPaMPaMPaMPaMPa%dmmmmmmmmmm0,050,01542800 to 35200,050,060,02222800 to 35200,060,07± 0,0030,03022800 to 35200,070,080,03952800 to 34800,080,090,04992800 to 34300,090,100,06172800 to 33800,100,110,07462800 to 33500,110,12± 0,0040,08882800 to 33200,120,140,1212800 to 32500,140,160,1582800 to 3200coiling test as- g- g0,160,180,2002800 to 3160specified in0,180,20± 0,0050,2472800 to 31107.4.30,200,220,2982770 to 30800,220,250,3852720 to 30100,250,280,4882680 to 29700,280,300,5552370 to 26502370 to 26502660 to 29402660 to 29400,300,32± 0,0080,6312350 to 26302350 to 26302640 to 29202640 to 29200,320,340,7132330 to 26002330 to 26002610 to 28902610 to 28900,340,3
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