EN 10277-5:2008

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Blankstahlerzeugnisse - Technische Lieferbedingungen - Teil 5: VergütungsstähleProduits en acier transformés à froid - Conditions techniques de livraison - Partie 5: Aciers pour trempe et revenuBright steel products - Technical delivery conditions - Part 5: Steels for quenching and tempering77.140.01Železni in jekleni izdelki na splošnoIron and steel products in generalICS:Ta slovenski standard je istoveten z:EN 10277-5:2008SIST EN 10277-5:2008en,fr,de01-maj-2008SIST EN 10277-5:2008SLOVENSKI
STANDARDSIST EN 10277-5:20001DGRPHãþD

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 10277-5March 2008ICS 77.140.20; 77.140.60Supersedes EN 10277-5:1999
English VersionBright steel products - Technical delivery conditions - Part 5:Steels for quenching and temperingProduits en acier transformés à froid - Conditionstechniques de livraison - Partie 5: Aciers pour trempe etrevenuBlankstahlerzeugnisse - Technische Lieferbedingungen -Teil 5: VergütungsstähleThis European Standard was approved by CEN on 4 February 2008.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 CEN 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 CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2008 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 10277-5:2008: ESIST EN 10277-5:2008

2 Normative references The following referenced 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 10083-2, Steels for quenching and tempering - Part 2: Technical delivery conditions for non alloy steels EN 10083-3, Steels for quenching and tempering - Part 3: Technical delivery conditions for alloy steels EN 10277-1, Bright steel products - Technical delivery conditions - Part 1: General 3 Terms and definitions For the purposes of this European Standard, the terms and definitions given in EN 10277-1 and the following apply. 3.1 steels for quenching and tempering engineering steels which because of their chemical composition are suitable for hardening and in the quenched and tempered condition have good toughness at a given tensile strength. 4 Classification and designation
4.1 Classification Steel grades C35E, C35R, C40E, C40R, C45E, C45R, C50E, C50R, C60E and C60R are non-alloy special steels. All other steel grades covered by this European Standard are alloy special steels. 4.2 Designation See EN 10277-1. 5 Information to be supplied by the purchaser See EN 10277-1. 6 Manufacturing process See EN 10277-1. SIST EN 10277-5:2008

The mechanical properties of the steels shall be as specified in Table 3, Table 4 and Table 5.
7.3 Hardenability Where steels are ordered with hardenability requirements, the requirements of EN 10083-2 shall apply for non alloyed steels and EN 10083-3 shall apply for alloyed steels.
7.4 Grain size Unless otherwise agreed at the time of ordering the grain size of non-alloy steels shall be left to the discretion of the manufacturer. If a fine grain structure is required in accordance with a reference treatment, option B.2 of EN 10277-1 shall be ordered. All alloy steels shall show an austenitic grain size of 5 or finer. Only for verification see B.2 of EN 10277-1. 7.5 Non-metallic inclusions 7.5.1 Microscopic inclusions The steels shall have a cleanness corresponding to special steel quality. For details of the requirements for the verification of non-alloy steels see EN 10083-2, A.4 for and of alloy steels see EN 10083-3, A.3. 7.5.2 Macroscopic inclusi
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