SIST EN 10277-1:2008

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.RBlankstahlerzeugnisse - Technische Lieferbedingungen - Teil 1: AllgemeinesProduits en acier transformés à froid - Conditions techniques de livraison - Partie 1: GénéralitésBright steel products - Technical delivery conditions - Part 1: General77.140.01Železni in jekleni izdelki na splošnoIron and steel products in generalICS:Ta slovenski standard je istoveten z:EN 10277-1:2008SIST EN 10277-1:2008en,de01-maj-2008SIST EN 10277-1:2008SLOVENSKI
STANDARDSIST EN 10277-1:20001DGRPHãþD



SIST EN 10277-1:2008



EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 10277-1March 2008ICS 77.140.60Supersedes EN 10277-1:1999
English VersionBright steel products - Technical delivery conditions - Part 1:GeneralProduits en acier transformés à froid - Conditionstechniques de livraison - Partie 1: GénéralitésBlankstahlerzeugnisse - Technische Lieferbedingungen -Teil 1: AllgemeinesThis 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 10277-1:2008: ESIST EN 10277-1:2008



EN 10277-1:2008 (E) 2 Contents Page Foreword.3 1 Scope.4 2 Normative references.4 3 Terms and definitions.5 4 Classification and designation.6 4.1 Classification.6 4.2 Designation.6 5 Information to be supplied by the purchaser.6 5.1 Mandatory information.6 5.2 Options.7 6 Manufacturing process.7 6.1 Steel making process.7 6.2 Manufacture of the product.8 6.3 Delivery conditions.8 7 Requirements.8 7.1 Chemical composition.8 7.2 Mechanical properties.8 7.3 Hardenability.8 7.4 Grain size.9 7.5 Non-metallic inclusions.9 7.6 Decarburization.9 7.7 Surface condition.9 7.8 Internal soundness.10 7.9 Dimensions, shape and tolerances.10 8 Inspection and testing.10 8.1 Types and contents of inspection documents.10 8.2 Specific inspection.11 9 Marking.11 Annex A (normative)
Ruling section for mechanical properties.13 Annex B (normative)
Options.16 Bibliography.18
SIST EN 10277-1:2008



EN 10277-1:2008 (E) 3 Foreword This document (EN 10277-1:2008) has been prepared by Technical Committee ECISS/TC 23 “Steels for heat treatment, alloy steels and free-cutting steels - Qualities and dimensions”, the secretariat of which is held by DIN. 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 September 2008, and conflicting national standards shall be withdrawn at the latest by September 2008. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 10277-1:1999. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: 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 the United Kingdom. This European Standard EN 10277 'Bright steel products - Technical delivery conditions' is subdivided as follows: Part 1: General; Part 2: Steels for general engineering purposes; Part 3: Free-cutting steels; Part 4: Case hardening steels; Part 5: Steels for quenching and tempering. During the preparation of the first edition of this European Standard there were not enough statistical data available concerning mechanical properties of bright bar products. Since then it has been recognized that the proof strength values in the cold drawn condition were too high. In addition, cyclic stresses that occur during straightening can reduce the proof strength (Bauschinger's effect), which was not taken into account when drafting the first edition of this standard. In this second edition the proof strength values of non-alloy and alloy grades in condition +QT+C in parts 3 and 5 have been adjusted downwards compared to the first edition.
SIST EN 10277-1:2008



EN 10277-1:2008 (E) 4 1 Scope This part of EN 10277 specifies the general technical delivery conditions for bright steel bars in the drawn, turned or ground condition, in straight lengths and of the following steel types: a) steels for general engineering purposes as specified in EN 10277-2; b) free-cutting steels as specified in EN 10277-3; c) case hardening steels as specified in EN 10277-4; d) steels for quenching and tempering as specified in EN 10277-5. It does not cover cold rolled products and cut lengths produced from strip or sheet by cutting. In special cases variations in these technical delivery requirements or additions to them may form the subject of an agreement at the time of enquiry and order (see Annex B). In addition to the specifications of this European Standard, the general technical delivery requirements of EN 10021 are applicable, unless otherwise specified. 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 606, Bar coding - Transport and handling labels for steel products EN 10002-1, Metallic materials - Tensile testing - Part 1: Method of test at ambient temperature EN 10020:2000, Definition and classification of grades of steel EN 10021, General technical delivery conditions for steel products EN 10027-1, Designation systems for steels - Part 1: Steel names EN 10027-2, Designation systems for steels - Part 2: Numerical system EN 10052, Vocabulary of heat treatment terms for ferrous products EN 10079:2007, Definition of steel products 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 10084, Case hardening steels – Technical delivery conditions
EN 10204, Metallic products - Types of inspection documents prCEN/TR 10261, Iron and steel - Review of available methods of chemical analysis EN 10277-2, Bright steel products - Technical delivery conditions - Part 2: Steels for general engineering purposes SIST EN 10277-1:2008



EN 10277-1:2008 (E) 5 EN 10277-3, Bright steel products - Technical delivery conditions - Part 3: Free-cutting steels
EN 10277-4, Bright steel products - Technical delivery conditions - Part 4: Case-hardening steels
EN 10277-5, Bright steel products - Technical delivery conditions - Part 5: Steels for quenching and tempering EN 10278, Dimensions and tolerances of bright steel products EN ISO 377, Steel and steel products - Location and preparation of samples and test pieces for mechanical testing (ISO 377:1997) EN ISO 643, Steels - Micrographic determination of the apparent grain size (ISO 643:2003) EN ISO 3887, Steels - Determination of depth of decarburization (ISO 3887:2003) EN ISO 6506-1, Metallic materials - Brinell hardness test - Part 1: Test method (ISO 6506-1:2005) EN ISO 14284, Steel and iron - Sampling and preparation of samples for the determination of chemical composition (ISO 14284:1996) 3 Terms and definitions For the purposes of this European Standard, the terms and definitions given in EN 10021:2006, EN ISO 377:1997, EN ISO 14284:2002 and the following apply. 3.1 non-alloy and alloy steel; quality and special steel see the terms and definitions in EN 10020:2000 3.2 steel products
steel products are defined according to their shape and dimensions in EN 10079. In particular the following definitions are reproduced
3.2.1 drawn products (3.4.5.1, EN 10079:2007) products of various cross section shapes obtained, after descaling, by drawing of hot rolled bars or rod on a draw bench (cold deformation without removing material) NOTE
This operation gives the product special features with respect to shape, dimensional accuracy and surface finish. In addition, the process causes cold working of the product, which can be eliminated by subsequent heat treatment. Products in lengths are delivered straightened regardless of size.
3.2.2 turned products (3.4.5.2, EN 10079:2007) round bars produced by turning on a lathe where the product can be further processed by straightening and polishing NOTE 1 This operation gives the bar special features with respect to shape, dimensional accuracy and surface finish. The removal of metal is carried out in such a way that the bright product is generally free from rolling defects and surface decarburization. NOTE 2 For technical reasons some bars ordered as hot rolled products may be delivered roughly turned (peeled), nevertheless such products are treated as hot rolled products and not as bright products.
SIST EN 10277-1:2008



EN 10277-1:2008 (E) 6 3.2.3 ground products (3.4.5.3, EN 10079:2007) drawn or turned round bars given an improved surface quality and dimensional accuracy by grinding or grinding and polishing 3.3 heat treatment terms terms used in the heat treatment of steel are defined in EN 10052 3.4 ruling section for heat treatment
ruling section for heat treatment of a product is the section for which the mechanical properties have been specified (see Annex A). Whatever the actual shape and dimensions of the cross section of the product, the size of its ruling section is expressed as a diameter. This corresponds to the diameter of an “equivalent round bar” which, at the position of its cross section specified for taking test pieces for mechanical tests, will, when being cooled from the austenitising temperature, show the same cooling rate as the actual ruling section of the product concerned at its position for taking test pieces
NOTE The term “ruling section” should not be confused with the term “equivalent diameter” as defined in EN 10052.
4 Classification and designation
4.1 Classification The classification of the relevant steel grades according to EN 10020 is indicated in EN 10277-2 to EN 10277-5. 4.2 Designation 4.2.1 Steel names For the steel grades covered by this European Standard, the steel names as given in the relevant tables of
EN 10277-2 to EN 10277-5 are assigned in accordance with EN 10027-1. 4.2.2 Steel numbers For the steel grades covered by this European Standard, the steel numbers as given in the relevant tables of EN 10277-2 to EN 10277-5 are allocated in accordance with EN 10027-2. 5 Information to be supplied by the purchaser 5.1 Mandatory information The following information shall be supplied by the purchaser at the time of enquiry and order: a) quantity (mass, number of bars) to be delivered; b) shape of the product (e.g. round, hexagon, square, flat); c) number of the dimensional standard (EN 10278); d) dimensions and tolerances on dimensions; SIST EN 10277-1:2008



EN 10277-1:2008 (E) 7 e) reference to this European Standard including the number of the part (e.g. EN 10277-3); f) steel name or steel number (see 4.2); g) delivery condition (see 6.3); h) class of surface quality (see 7.7 and Table 1); 5.2 Options The following options may be supplied by the purchaser and as agreed with the manufacturer: a) reference testing for products used in the quenched and tempered condition (see B.1); b) any fine grain requirement and verification of fine grain size (see 7.4 and B.2); c) any requirement for the verification of non-metallic inclusions (see 7.5 and B.3); d) depth of decarburization (see 7.6 and B.4); e) additional requirements to the tolerances on shape according to EN 10278; f) temporary corrosion protection (see B.5); g) non-destructive testing (see 7.8 and B.6); h) product analysis (see 7.1.2 and B.7); i) special marking (see 9 and B.8); j) hardenability requirements for grades of EN 10277-4 and EN 10277-5 (see 7.1.1.2 and 7.3 of EN 10277-4 and EN 10277-5); k) type of inspection document in accordance with EN 10204 (see 8.1). EXAMPLE 2 t round bars with nominal diameter 20 mm, tolerance h9, stock length 6000 mm according to EN 10278 made of steel grade 38SMn28 (1.0760) according to EN 10277-3 in the delivery condition +C, surface quality class 3 and a test report 2.2 as specified in EN 10204.
2t round bars EN 10278 - 20 h9 x stock 6000 EN 10277-3-38SMn28+C - class 3 EN 10204 – 2.2 or 2t round bars EN 10278 - 20 h9 x stock 6000 EN 10277-3-1.0760+C - class 3 EN 10204 – 2.2 6 Manufacturing process 6.1 Steel making process The stee
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