SIST EN 13981-4:2007

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aluminium and aluminium alloys - Products for structural railway applications - Technical conditions for inspection and delivery - Part 4: ForgingsAluminium et alliages d'aluminium - Produits pour applications ferroviaires structurales - Conditions techniques de contrôle et de livraison - Partie 4: Pieces forgéesAluminium und Aluminiumlegierungen - Erzeugnisse für tragende Anwendungen im Schienenfahrzeugbau - Technische Lieferbedingungen - Teil 4: SchmiedestückeTa slovenski standard je istoveten z:EN 13981-4:2006SIST EN 13981-4:2007en77.150.10Aluminijski izdelkiAluminium products45.040Materiali in deli za železniško tehnikoMaterials and components for railway engineeringICS:SLOVENSKI
STANDARDSIST EN 13981-4:200701-februar-2007







EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13981-4November 2006ICS 77.150.10 English VersionAluminium and aluminium alloys - Products for structural railwayapplications - Technical conditions for inspection and delivery -Part 4: ForgingsAluminium et alliages d'aluminium - Produits pourapplications ferroviaires structurales - Conditionstechniques de contrôle et de livraison - Partie 4: PiècesforgéesAluminium und Aluminiumlegierungen - Erzeugnisse fürtragende Anwendungen im Schienenfahrzeugbau -Technische Lieferbedingungen - Teil 4: SchmiedestückeThis European Standard was approved by CEN on 6 October 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 13981-4:2006: E



EN 13981-4:2006 (E) 2 Contents Page Foreword.4 1 Scope.5 2 Normative references.5 3 Terms and definitions.5 4 Ordering information.6 5 Requirements.6 5.1 Production and manufacturing processes.6 5.2 Quality assurance.6 5.3 Alloys, chemical composition and tempers.7 5.4 Mechanical properties of forgings.7 5.4.1 Mechanical properties of forgings under static loading.7 5.4.2 Mechanical properties of forgings under cyclic loading.7 5.5 Mechanical properties of welded joints.8 5.5.1 General.8 5.5.2 Mechanical properties of welded joints under static loading.8 5.5.3 Mechanical properties of welded joints under cyclic loading.8 5.6 Freedom from surface defects.9 5.7 Tolerances on dimensions and form.9 6 Qualification procedures.9 6.1 First-off article approval procedure.9 6.2 Additional qualification procedure.9 7 Sampling and test methods.10 7.1 General.10 7.2 Analysis of chemical composition.10 7.3 Tensile test.11 7.4 Preparation of test pieces for the testing of welded joints.11 7.5 Tensile testing on welded joints.11 7.6 Fatigue testing (parent material and welded joints).11 7.7 Dye penetrant testing.12 7.8 Metallographic testing.12 7.9 Visual inspection.12 7.10 Measurement of dimensions.12 7.11 Ultrasonic testing.12 8 Traceability.13 9 Marking of forgings.13 10 Declaration of conformity.13 11 Record keeping.14 12 Packaging.14 13 Application and use.14 14 Complaints of non-conformity.14 Annex A (normative)
Mechanical properties of alloys EN AW-6061 and EN AW-6110A.15 Annex B (normative)
Test pieces for fatigue testing.16 Annex C (informative)
Guidelines for application and use.17



EN 13981-4:2006 (E) 3 C.1 Selection of alloys.17 C.2 Fatigue design.18 C.3 Welding.18 Annex D (normative)
Chemical composition of EN AW-6110A [EN AW-Al Mg0,9Si0,9MnCu].20 Bibliography.21
Figures Figure B.1 — Test pieces for fatigue testing.16
Tables Table 1 — Fatigue properties of forgings (not applicable for design purposes, see C.2).7 Table 2 — Fatigue properties of MIG welded butt joints (not applicable for design purposes, see C.2).9 Table 3 — Product inspection and testing procedures.10 Table 4 — Fatigue test factor F.12 Table A.1 — Mechanical properties of alloy EN AW-6061 and EN AW-6110A forgings.15 Table B.1 — Dimensions of test pieces.16 Table C.1 — Mechanical properties of welded butt joints, EN ISO 10042 class C, MIG welded.19 Table D.1 — Chemical composition of alloy EN AW-6110A.20



EN 13981-4:2006 (E) 4 Foreword This document (EN 13981-4:2006) has been prepared by Technical Committee CEN/TC 132 “Aluminium and aluminium alloys”, the secretariat of which is held by AFNOR. 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 May 2007, and conflicting national standards shall be withdrawn at the latest by May 2007. Within its program of work, Technical Committee CEN/TC 132 entrusted CEN/TC 132/WG 21 “Aluminium for railway applications” to prepare the following standard: EN 13981-4, Aluminium and aluminium alloys — Products for structural railway applications — Technical conditions for inspection and delivery — Part 4: Forgings. EN 13981 comprises the following parts under the general title "Aluminium and aluminium alloys — Products for structural railway applications — Technical conditions for inspection and delivery":  Part 1: Extruded products  Part 2: Plates and sheets  Part 3: Castings  Part 4: Forgings Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. CEN/TC 132 affirms it is its policy that in the case when a patentee refuses to grant licenses on standardised standard products under reasonable and not discriminatory conditions, then this product shall be removed from the corresponding standard. 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 13981-4:2006 (E) 5 1 Scope This European Standard specifies requirements for forgings (hand forgings, die forgings) which contribute to the structural properties of the railcar bodyshell and other major structural components. The requirements on welded joints specified in this European Standard are not applicable to welded assemblies and sub-assemblies as they are specified for material qualification purposes only. It specifies particular requirements regarding qualification, quality control, material properties and dimensional tolerances. Furthermore, guide-lines for application and use are given. 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 515, Aluminium and aluminium alloys — Wrought products — Temper designations EN 571-1, Non destructive testing — Penetrant testing — Part 1: General principles EN 573-3, Aluminium and aluminium alloys — Chemical composition and form of wrought products — Part 3: Chemical composition EN 586-1, Aluminium and aluminium alloys — Forgings — Part 1: Technical conditions for inspection and delivery EN 586-2, Aluminium and aluminium alloys — Forgings — Part 2: Mechanical properties and additional property requirements EN 586-3, Aluminium and aluminium alloys — Forgings — Part 3: Tolerances on dimensions and form EN 895, Destructive tests on welds in metallic materials — Transverse tensile test EN 1011-4:2000, Welding — Recommendations for welding of metallic materials — Part 4: Arc welding of aluminium and aluminium alloys EN 10204:2004, Metallic products — Types of inspection documents EN 12258-1:1998, Aluminium and aluminium alloys — Terms and definitions — Part 1: General terms EN ISO 10042, Arc-welded joints in aluminium and its alloys — Quality levels for imperfections (ISO 10042:2005) 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 12258-1:1998 and the following apply. 3.1 forging lot quantity of forgings of the same grade or alloy, form, temper, shape, thickness or cross-section, subsequently forged without die change



EN 13981-4:2006 (E) 6 3.2 inspection lot consignment, or part thereof, submitted for inspection, comprising products of the same grade or alloy, form, temper, shape, thickness or cross-section and processed in the same manner. Products included in one inspection lot shall be manufactured in the same production unit 3.3 heat treatment batch or lot quantity of products of the same grade or alloy, form, thickness or cross-section and produced in the same way, heat-treated in one furnace load, or such products solution-treated and subsequently precipitation-treated in one furnace load. More than one solution-treatment lot can be included in the precipitation furnace load 3.4 structural property property having a direct effect on the static and dynamic load carrying capability of a component or assembly 4 Ordering information The ordering information shall be formulated as laid down in EN 586-1. Reference to this European Standard shall be made. In addition, it shall be indicated whether the forging is intended to be welded or not. If the purchaser requires the ultrasonic inspection of the forging stock or the forgings, this shall be stated in the order. 5 Requirements 5.1 Production and manufacturing processes Unless otherwise specified on the order, the production and manufacturing processes shall be left to the discretion of the manufacturer. Unless it is explicitly stated on the order, no obligation shall be placed on the manufacturer to use the same processes for subsequent and similar orders. 5.2 Quality assurance The manufacturer shall establish and maintain a quality management system which should be at least equivalent to EN ISO 9001. The manufacturer shall establish and maintain inspection plans defining all inspections and tests to be performed on the forging to fulfil the requirements of this European Standard and any other agreed requirement, the frequency of the tests and the type of record to be established. The inspection plan shall specify for each inspection or test whether it is to be performed per cast, per forging lot, per heat treatment batch, per inspection lot or per any other lot of importance. The inspection plan shall comply as a minimum to the test procedures and test requirements stipulated in this European Standard (see Table 3). The inspection plan shall include additional schemes for appropriate process control. If required the inspection plan shall be submitted to the purchaser for approval before start of production. The manufacturer shall be responsible for carrying out all inspections and tests required by this European Standard, prior to the shipment of the forging. If the purchaser wishes to inspect the forging at the manufacturer’s works, he shall stipulate this at the time of placing the order.



EN 13981-4:2006 (E) 7 The extent of inspections shall be in compliance with Table 3. Unless explicitly stated quality controls and inspections shall be performed on inspection lots. 5.3 Alloys, chemical composition and tempers The alloys shall be selected from the following: EN AW-5754, EN AW-5083, EN AW-6082, EN AW-6061, EN AW-6110A. Any other alloy shall be qualified according to a mutually agreed procedure which shall consider the intended joining technique and the intended use. The chemical compositions of these alloys shall be as specified in EN 573-3. The chemical composition of alloy EN AW-6110A is specified in Annex D. In addition, the lead (Pb) content of all 6xxx series alloys shall be limited to max. 0,01 %. If the purchaser requires content limits for elements not specified in the above standard, these limits shall be stated on the order, after agreement between purchaser and supplier. The tempers shall be selected from those specified in EN 586-2 or in Table A.1 unless otherwise agreed upon between supplier and purchaser. Tempers shall be as defined in EN 515. Other tempers shall be qualified according to a mutually agreed procedure which shall consider the intended joining technique and the intended use. 5.4 Mechanical properties of forgings 5.4.1 Mechanical properties of forgings under static loading Tensile strength, yield strength and elongation of forgings shall conform to the requirements in EN 586-2 unless otherwise agreed upon between supplier and purchaser and stated on the order. The mechanical properties of alloys EN AW-6061 and EN AW-6110A shall comply with Annex A. 5.4.2 Mechanical properties of forgings under cyclic loading The minimum values for the maximum stress specified in Table 1 shall be met for all alloys and wall thicknesses under the following conditions: Percentage of non-failure: 97,5 % Number of cycles: 107 The test pieces shall be tested according to 7.6. Table 1 — Fatigue properties of forgings (not applicable for design purposes, see C.2) Stress ratio R = σmin/σmax –1 0,1 0,5 Maximum stress a b σmax 65 110 180 a Meeting these values is a necessary condition for the use of design codes mentioned under C.2. b If σmax exceeds the yield strength as specified in 5.4.1, σmax is equal to Rp0,2.

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