EN 10263-3:2001

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Walzdraht, Stäbe und Draht aus Kaltstauch- und Kaltfließpressstählen - Teil 3: Technische Lieferbedingungen für EinsatzstähleBarres, fil machine et fil en acier pour transformation a froid et extrusion a froid - Partie 3: Conditions techniques de livraison des aciers de cémentationSteel rod, bars and wire for cold heading and cold extrusion - Part 3: Technical delivery conditions for case hardening steels77.140.65Jeklene žice, jeklene vrvi in verigeSteel wire, wire ropes and link chains77.140.60Jeklene palice in drogoviSteel bars and rodsICS:Ta slovenski standard je istoveten z:EN 10263-3:2001SIST EN 10263-3:2002en01-september-2002SIST EN 10263-3:2002SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 10263-3June 2001ICS 77.140.60; 77.140.65English versionSteel rod, bars and wire for cold heading and cold extrusion -Part 3: Technical delivery conditions for case hardening steelsBarres, fil machine et fil en acier pour transformation à froidet extrusion à froid - Partie 3: Conditions techniques delivraison des aciers de cémentationWalzdraht, Stäbe und Draht aus Kaltstauch- undKaltfließpreßstählen - Teil 3: Technische Lieferbedingungenfür EinsatzstähleThis European Standard was approved by CEN on 19 April 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 10263-3:2001 ESIST EN 10263-3:2002

Page 2EN 10263-3:2001CONTENTSPageFOREWORD.31Scope.42Normative References.43Terms and definitions.44Classification and Designation.44.1Classification.44.2Designation.45Production process.45.1Steelmaking process.45.2Deoxidation.56Requirements.56.1Delivery conditions.56.2Chemical composition.56.3Mechanical properties.56.4Hardenability.56.5Surface quality.56.6Supplementary or special requirements.5SIST EN 10263-3:2002

Page 3EN 10263-3:2001FOREWORDThis European Standard has been prepared by Technical Committee ECISS/TC 15 "Wire-rod - Qualities,dimensions, tolerances and specific tests", the secretariat of which is held by UNI.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 December 2001, and conflicting national standards shallbe withdrawn at the latest by December 2001.This European Standard EN 10263 is subdivided as follows:- Part 1:General technical delivery conditions;- Part 2:Technical delivery conditions for steels not intended for heat treatment after cold working;- Part 3:Technical delivery conditions for case hardening steels;- Part 4:Technical delivery conditions for steels for quenching and tempering- Part 5:Technical delivery conditions for stainless steels.According to the CEN/CENELEC Internal Regulations, the national standards organizations of thefollowing countries are bound to implement this European Standard: Austria, Belgium, Czech Republic,Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway,Portugal, Spain, Sweden, Switzerland and the United Kingdom.SIST EN 10263-3:2002

Page 4EN 10263-3:20011Scope1.1This Part of EN 10263 is applicable to round rod, round bars and wire with a diameter up to andincluding 100 mm, of non-alloy and alloy steel, intended for cold heading and cold extrusion andsubsequent case hardening treatment.1.2This Part of EN 10263 is complemented by EN 10263-1.2Normative ReferencesThis European Standard incorporates by date or undated reference, provisions from other publications.These normative references are cited at the appropriate places in the text and the publications are listedhereafter. For date references, subsequent amendments to or revisions of, any of these publicationsapply to this European Standard only when incorporated in it by amendment or revision. For undatedreferences the latest edition of the publication referred to applies (including amendments).EN 10020Definitions and classification of grades of steelEN 10263-1Steel rod, bars and wire for cold heading and cold extrusion- Part 1: General technicaldelivery conditions.3Terms and definitionsFor the purposes of this standard the definitions in EN 10263-1:2001 and the following apply.3.1Case hardening steelSteel with a relatively low carbon content, which is intended for carburizing or carbonitriding andsubsequent hardening.
Such steels, after treatment, are characterised by a high hardness surface layerand a tough core.NOTE
Other processes for case hardening include nitriding and nitrocarburizing4Classification and Designation4.1ClassificationAll steels covered by this Part of EN 10263-1:2001 are special steels according to EN 10020.Steel grades from C10E2C to C20E2C as quoted in table 2 are non-alloy steels and all others are alloysteels according to EN 10020.4.2DesignationSee EN 10263-1:2001.5Production process5.1Steelmaking processSee EN 10263-1:2001.SIST EN 10263-3:2002

Page 5EN 10263-3:20015.2DeoxidationAll steels quoted in table 2 shall be killed.6Requirements6.1Delivery conditionsThe delivery conditions in which the products covered by this Part of EN 10263 are normally supplied, theproduct forms and the applicable requirements are given in table 1.6.2Chemical composition6.2.1Heat analysisThe chemical composition shall be in accordance with the values specified in table 2 for the heat analysis.6.2.2Product analysisIn cases where a product analysis is requested, the admissible deviations from the values specified forthe heat analysis are indicated in table 3.6.3Mechanical propertiesThe mechanical properties of the products, to be determined by the tensile test or hardness test , shall bein accordance with the prescriptions given in table 1, for that which concerns the delivery condition, and intables 4, 5 and 6.6.4Hardenability6.4.1In the case of products ordered with standard requirements regarding hardenability, that is, whenthe steel names or numbers as quoted in table 2 are supplemented by the symbols “+H”, the hardnessvalues obtained in the end quench test (Jominy test) (see table 1 of EN 10263-1:2001) shall be incompliance with the values given in table 7.6.4.2 In the case of products ordered with restricted requirements regarding the scatter bands of thehardness values obtained by the Jominy test, that is when the steel name or number as quoted intable 2 is supplemented by the symbol “+HH” or “+HL”, the above hardness values shall be incompliance with the values given in table 8.NOTE 1The symbol “+HH” denotes that the upper limit of the scatter band coincides with theupper limit for the corresponding steel “+H”.NOTE 2The symbol “+HL” denotes that the lower limit of the scatter band coincides with thelower limit for the corresponding steel “+H”.NOTE 3See EN 10263-1:2001, 7.7.46.4.3 The austenitizing temperatures for the Jominy test are given in tables 7 and 8.6.5Surface qualityFor any particular surface requirement to be agreed at the time of ordering see EN 10263-1:2001, 7.10.6.6Supplementary or special requirementsOther requirements that can be agreed at the time of enquiry and order are described in Annex B of EN10263-1:2001.SIST EN 10263-3:2002

Page 6EN 10263-3:2001Table 1 - Delivery conditions, product forms and applicable requirementsApplicable requirements in cases where the steel concerned has beenorderedproducts form a)with reference to the steel names indicated inDeliveryconditionsymbolsrodbarwiretable 2 and 4 or 5 or 6table 7 or 8table 2,4,5,6,7 or 8as hot rolled+U or
+U+PEXX+cold drawn+U+CXX+cold drawn +spheroidized+U+C+ACXXuntreated+cold drawn+spheroidized+skin passed+U+C+AC+LCXXas treated+ACXX+peeled+AC+PEXXspheroidized+cold drawn+AC+CXXferrite-pearlitestructure andhardnessrangeas treated+FPXChemicalcompositionas specifiedintables2 and 3Mechanicalpropertiesas specifiedintable4 or 5 or 6Chemicalcompositionas specifiedintables2 and 3Mechanicalpropertiesas specifiedintable4 or 5 or 6Values forHardenabilityaccordingto ta
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