SIST EN 10268:2006
(Main)Cold rolled steel flat products with high yield strength for cold forming - Technical delivery conditions
Cold rolled steel flat products with high yield strength for cold forming - Technical delivery conditions
This European Standard applies to cold rolled uncoated steel flat products for cold forming with higher yield strength. The thickness is equal to or less than 3 mm.
These products are delivered in sheet, wide strip, slit wide strip, narrow strip or cut lengths obtained from slit wide strip, narrow strip or sheet.
Kaltgewalzte Flacherzeugnisse aus Stählen mit hoher Streckgrenze zum Kaltumformen - Technische Lieferbedingungen
Diese Europäische Norm gilt für kaltgewalzte Flacherzeugnisse ohne Überzug aus Stählen mit hoher Streckgrenze zum Kaltumformen. Die Dicke beträgt ? 3 mm.
Diese Erzeugnisse werden geliefert als Blech, Breitband, längsgeteiltes Breitband, durch Ablängen von Kaltband oder längsgeteiltem Breitband erzeugte Stäbe und Kaltband.
Produits plats laminés a froid a haute limite d'élasticité pour formage a froid - Conditions techniques de livraison
La présente Norme européenne s’applique aux produits plats en acier laminés a froid et non revetus a haute limite d’élasticité pour formage a froid. Leur épaisseur est inférieure ou égale a 3 mm.
Ces produits sont livrés sous forme de tôles, larges bandes, larges bandes refendues, feuillards ou bandes coupées a longueur, obtenues a partir d’une large bande refendue, d’un feuillard ou d’une tôle.
Hladno valjani ploščati izdelki z veliko napetostjo tečenja za preoblikovanje v hladnem - Tehnični dobavni pogoji
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Cold rolled steel flat products with high yield strength for cold forming - Technical delivery conditionsProduits plats laminés a froid a haute limite d'élasticité pour formage a froid - Conditions techniques de livraisonKaltgewalzte Flacherzeugnisse aus Stählen mit hoher Streckgrenze zum Kaltumformen - Technische LieferbedingungenTa slovenski standard je istoveten z:EN 10268:2006SIST EN 10268:2006en77.140.50ICS:SIST EN 10268:20001DGRPHãþDSLOVENSKI
STANDARDSIST EN 10268:200601-november-2006
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 10268July 2006ICS 77.140.50Supersedes EN 10268:1998
English VersionCold rolled steel flat products with high yield strength for coldforming - Technical delivery conditionsProduits plats laminés à froid à haute limite d'élasticité pourformage à froid - Conditions techniques de livraisonKaltgewalzte Flacherzeugnisse aus Stählen mit hoherStreckgrenze zum Kaltumformen - TechnischeLieferbedingungenThis European Standard was approved by CEN on 12 June 2006.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 Central Secretariat 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 Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, 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© 2006 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 10268:2006: E
EN 10268:2006 (E) 2 Contents Foreword.3 1 Scope.4 2 Normative references.4 3 Terms and definitions.5 4 Designation.5 5 Requirements.6 5.1 Steelmaking
and manufacturing processes.6 5.2 Chemical composition.6 5.3 Delivery conditions.6 5.4 Mechanical properties.7 5.5 Surface characteristics.9 5.5.1 General.9 5.5.2 Surface quality.9 5.5.3 Surface finish.9 5.6 Suitability for surface coating.9 5.7 Weldability.10 5.8 Tolerances on dimensions and shape.10 6 Tests.10 6.1 General.10 6.2 Inspection units.10 6.2.1 Products of rolled width ≥≥≥≥ 600 mm.10 6.2.2 Products of rolled width < 600 mm.10 6.3 Number of tests.10 6.4 Sampling.10 6.5 Test methods.11 6.6 Chemical analysis.11 6.7 Retests.11 6.8 Inspection document.11 7 Marking.11 7.1 Products of rolled width ≥≥≥≥ 600 mm.11 7.2 Products of rolled width < 600 mm.11 8 Packing.11 9 Disputes.11 10 Information to be supplied by the purchaser at the time of enquiry and order.12 Bibliography.13
EN 10268:2006 (E) 3 Foreword This document (EN 10268:2006) has been prepared by Technical Committee ECISS/TC 13 “Flat products for cold working - Qualities, dimensions, tolerances and specific tests”, the secretariat of which is held by IBN. 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 January 2007, and conflicting national standards shall be withdrawn at the latest by January 2007. This document supersedes EN 10268:1998. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, 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.
EN 10268:2006 (E) 4 1 Scope This European Standard applies to cold rolled uncoated steel flat products for cold forming with high yield strength. The thickness is equal to or less than 3 mm. These products are delivered in sheet, wide strip, slit wide strip, narrow strip or cut lengths obtained from slit wide strip, narrow strip or sheet. 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 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 10021:1993, General technical delivery requirements for steel and iron products EN 10027-1, Designation systems for steels - Part 1: Steel names EN 10027-2, Designation systems for steels - Part 2: Numerical system EN 10079:1992, Definition of steel products EN 10130, Cold rolled low carbon steel flat products for cold forming - Technical delivery conditions EN 10131, Cold rolled uncoated low carbon and high yield strength steel flat products for cold forming - Tolerances on dimensions and shape EN 10139, Cold rolled uncoated mild steel narrow strip for cold forming - Technical delivery conditions EN 10140, Cold rolled narrow steel strip - Tolerances on dimensions and shape EN 10204:2004, Metallic products - Types of inspection documents prEN 10325, Steel - Determination of yield strength increase by the effect of heat treatment (Bake-Hardening-Index) EN ISO 377, Steel and steel products - Location and preparation of samples and test pieces for mechanical testing (ISO 377:1997) EN ISO 14284, Steel and iron - Sampling and preparation of samples for the determination of chemical composition (ISO 14284:1996) ISO 10113, Metallic materials - Sheet and strip - Determination of plastic strain ratio ISO 10275, Metallic materials - Sheet and strip - Determination of tensile strain hardening exponent
EN 10268:2006 (E) 5 3 Terms and definitions For the purposes of this European Standard, the terms and definitions given in EN 10020:2000, EN 10021:1993, EN 10079:1992 and EN 10204:2004 and the following apply. 3.1 bake-hardening steels (B) steels that demonstrate a defined increase in proof strength following heating in the region of 170 °C for 20 minutes NOTE These steels have a good suitability for cold forming and present a high resistance to plastic straining which is increased on finished parts during the heat treatment. Dent resistance is improved. These steels are often used in car body outer parts. 3.2 rephosphorized steels (P) steels that contain up to 0,12% P and achieve the required proof strength levels NOTE These steels present a high mechanical resistance and a good suitability for cold forming due to solid solution hardening by phosphorus. They are used in car body panels and structural components due to their good impact and fatigue resistance properties. 3.3 low alloy / micro-alloyed steels (LA) steels containing one or more of alloys Nb, Ti and V to achieve required proof strength levels NOTE Combined precipitation and grain refinement hardening modes allow reaching a high mechanical resistance while reducing the content of alloying elements. Suitability for welding is improved and cold forming is limited. These steels are used in reinforcing structural parts and have good impact and fatigue strengths. 3.4 high strength interstitial free steels (Y) steels whose composition is controlled to achieve improved plastic strain ratio (r) and strain hardening exponent (n) values NOTE These steels have both a high mechanical strength and an excellent suitability for cold forming due to their solid solution hardening and interstitial free microstructure. They are used for complex components involving deep drawing processes. 3.5 isotropic steels (I) steels with limited plastic strain ratio (r) value
NOTE These steels have excellent stretch formability due to their isotropic behaviour. They are used in the automotive industry for bonnets and
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