SIST EN 4632-001:2008

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aeronavtika - Varjeni in trdo spajkani sestavi za konstrukcije v aeronavtiki -
Varilnost in spajkalnost materialov - 001. del: Splošne zahteveLuft- und Raumfahrt - Schweiß- und Lötverbindungen für die Luft- und Raumfahrt -Schweißbarkeitsgrad und Lötbarkeitsgrad von Werkstoffen - Teil 001: AllgemeinesSérie aérospatiale - Assemblages soudés et brasés pour constructions aérospatiales - Soudabilité et brasabilité des matériaux - Partie 001 : GénéralitésAerospace series - Welded and brazed assemblies for aerospace constructions - Weldability and brazeability of materials - Part 001: General requirements49.025.01Materiali za letalsko in vesoljsko gradnjo na splošnoMaterials for aerospace construction in general25.160.01Varjenje, trdo in mehko spajkanje na splošnoWelding, brazing and soldering in generalICS:Ta slovenski standard je istoveten z:EN 4632-001:2008SIST EN 4632-001:2008en01-julij-2008SIST EN 4632-001:2008SLOVENSKI
STANDARD



SIST EN 4632-001:2008



EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 4632-001April 2008ICS 49.025.01 English VersionAerospace series - Welded and brazed assemblies foraerospace constructions - Weldability and brazeability ofmaterials - Part 001: General requirementsSérie aérospatiale - Assemblages soudés et brasés pourconstructions aérospatiales - Soudabilité et brasabilité desmatériaux - Partie 001 : GénéralitésLuft- und Raumfahrt - Schweiß- und Lötverbindungen fürdie Luft- und Raumfahrt -Schweißbarkeitsgrad undLötbarkeitsgrad von Werkstoffen - Teil 001: AllgemeinesThis European Standard was approved by CEN on 7 March 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 4632-001:2008: ESIST EN 4632-001:2008



EN 4632-001:2008 (E) 2 Contents Page Foreword.3 Introduction.4 1 Scope.4 2 Normative references.4 3 Terms and definitions.4 4 Symbols, codes and abbreviations.7 5 Responsibilities.10 6 How to use this standard.10 7 Method of determining the degree of weldability and brazeability.10 Annex A (normative)
Recommendations for brazing and diffusion assemblies.11 Annex B (normative)
Model sheet.16 Annex C (normative)
Model sheet.17
SIST EN 4632-001:2008



EN 4632-001:2008 (E) 3 Foreword This document (EN 4632-001:2008) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-STAN). After enquiries and votes carried out in accordance with the rules of this Association, this Standard has received the approval of the National Associations and the Official Services of the member countries of ASD, prior to its presentation to CEN. 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 October 2008, and conflicting national standards shall be withdrawn at the latest by October 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. 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.
SIST EN 4632-001:2008



EN 4632-001:2008 (E) 4 Introduction This standard is the Part 001 of a series of standards about welded and brazed assemblies for aerospace constructions. 1 Scope This standard defines weldability and brazeability degrees for metallic materials used in aerospace construction, for processes and techniques involving welding and brazing but excluding soldering. It also defines rules to be observed to determine the degree of weldability and brazeability. It is applicable without any restriction for the manufacturing of new parts and repair parts. 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 ISO 4063, Welding and allied processes — Nomenclature of processes and reference numbers
(ISO 4063:1998) EN 515, Aluminium and aluminium alloys — Wrought products — Temper designations EN 573-3, Aluminium and aluminium alloys — Chemical composition and form of wrought products — Part 3: Chemical composition and form of products EN 10052, Vocabulary of heat treatment terms for ferrous products 3 Terms and definitions For the purposes of this document, the terms and definitions given in Publications on Welding and Welding Applications and issued by the International Council of the French Language and the following apply. 3.1 Weldability 3.1.1 concept of weldability it is considered that a metallic material is weldable to a given degree, by a given process and for a given application type, when it can be used to produce a weld provided that precautions corresponding to this degree are taken, and if the characteristics and consequences of the presence of the weld satisfy the required properties chosen as the basis for a judgement SIST EN 4632-001:2008



EN 4632-001:2008 (E) 5 3.1.2 weldability degrees weldability of materials is evaluated according to the following four degrees:
 degree 1:
material with very good weldability for which no special precautions are necessary. To be used in preference.  degree 2:
material with good weldability but which may require special precautions when welding (for example preheating, low advance speed, etc.).
 degree 3:
material with poor weldability requiring development for each part type and which may involve manufacturing uncertainties. Not to be recommended.  degree 4:
material with very bad weldability. To be avoided. 3.2 Brazeability 3.2.1 concept of brazeability it is considered that a metallic material is brazeable to a given degree, by a given process and for a given application type, when it can be used to produce brazing or a brazed-diffused joint, provided that precautions corresponding to this degree are taken, and if the characteristics and consequences of the presence of the brazing satisfy the required properties chosen as the basis for a judgement 3.2.2 brazeability degrees brazeability of materials is evaluated according to the following four degrees:
 degree 1:
material with very good brazeability for which no special precautions are necessary. To be used in preference.  degree 2:
material with good brazeability but which may require special precautions when brazing (for example electrolytic nickel flash before brazing, etc.).  degree 3:
material with poor brazeability requiring development for each part type and which may involve manufacturing uncertainties. Not to be recommended.  degree 4:
material with very bad brazeability. To be avoided. 3.3 Processes 3.3.1 welding and brazing the purpose of a welding operation is to make the material to be assembled continuous. In the case of a metallic material, continuity has to be achieved for the structure, but this does not necessarily imply homogeneity of the chemical composition (case of "heterogeneous" welds or brazing). The result of the operation is called a weld when two previously distinct parts are assembled together. If the operation is restricted to the addition of extra material to a part, it is called filling. A weld may be made without any external filler material (case of resistance welding, etc.), or with filler material. For metallic materials, a filler metal with a grade similar to that of the base metal (homogeneous weld) or different to the base metal (heterogeneous weld) may be used. In the case of a filler metal, the weld may be made in a single pass (one single pass of the heat source and the filler metal) or in several passes. Two major process categories can be distinguished: 1) welding or filling processes, with fusion of the edges of parts to be joined due to the thermal effect, 2) assembly, brazing or diffusion welding processes, for which the production temperature is less than the solidus temperature of parts to be joined; in this case, intermetallic diffusion phenomena are preponderant:  diffusion welding when the operation takes place in the solid phase;  brazing, when a liquid phase is obtained using a filler metal or is created in situ by metallurgical reaction. SIST EN 4632-001:2008



EN 4632-001:2008 (E) 6 3.4 Technical terms 3.4.1 light alloy aluminium or magnesium based alloy 3.4.2 structural state state of the crystalline metal structure resulting from an appropriate treatment 3.4.3 fabrication execution of welding operations on new parts or parts being repaired 3.4.4 base material/metal material or metal from which elementary parts are made 3.4.5 elementary part single element that will be assembled with other elements to form a part 3.4.6 part - product assembly composed of several assembled elementary parts 3.4.7 annealing at ambient temperature heat treatment, sometimes called maturation on light alloy 3.4.8 super alloy nickel or cobalt based alloy resistant to high temperatures 3.4.9 super-refractory metal or alloy based on W, Ta and Mo 3.4.10 heat treatment treatment that will confer the required structural state and properties on the base material (see Clause 4, Symbols, codes and abbreviations) 3.5 General terms 3.5.1 manufacturer
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