1、BRITISH STANDARD AEROSPACE SERIES BS EN 4258:1998 Metallic materials General organization of standardization Links between types of EN standards and their use The European Standard EN 4258:1998 has the status of a British Standard ICS 49.025.01BSEN4258:1998 This British Standard, having been prepare
2、d under the direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 October 1998 BSI 05-1999 ISBN 0 580 30554 6 National foreword This British Standard is the English language version of EN4258:1998. The UK participation in its
3、preparation was entrusted to Technical Committee ACE/61, Inspection and testing requirements for aerospace metallic materials, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or pr
4、oposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement int
5、ernational or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to in
6、clude all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pag
7、es i and ii, theENtitlepage, pages2 to8 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No. Date CommentsBSEN4258:1998 BSI
8、 05-1999 i Contents Page National foreword Inside front cover Foreword 2 Text of EN 4258 3ii blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN4258 May1998 ICS49.025.01 Descriptors: Aircraft industry, metals, semi-finished products, definitions, standards, description, organization, reference
9、 to standards, level, quantity, utilization English version Aerospace series Metallic materials General organization of standardization Links between types of EN standards and their use Srie arospatiale Matriaux mtalliques Organisation gnrale de la normalisation Liens entre les types de normes EN et
10、 leur utilisation Luft- und Raumfahrt Metallische Werkstoffe Allgemeine Gliederung der Normung Verknpfung der Arten von EN-Normen und ihre Anwendung This European Standard was approved by CEN on23February1998. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate
11、the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists
12、in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies
13、 of Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung
14、Central Secretariat: rue de Stassart 36, B-1050 Brussels 1998 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 4258:1998 EEN4258:1998 BSI 05-1999 2 Foreword This European Standard has been prepared by the European Association of Aer
15、ospace Manufacturers (AECMA). After inquiries 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 AECMA, prior to its presentation to CEN. This European Stand
16、ard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by November1998, and conflicting national standards shall be withdrawn at the latest by November1998. According to the CEN/CENELEC Internal Regulations, the national stan
17、dards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Contents Pa
18、ge Foreword 2 0 Introduction 3 1 Scope 3 2 Normative references 3 3 Definitions 4 4 Description of the types of EN standards 4 5 Links between types of EN standards and use 5 6 Overview 5 Annex A (normative) New organization 6 Annex B (normative) Use of the material standard 7 Annex C (normative) In
19、termediate procedure 8 Table A.1 Overview 6 Table C.1 Overview 8EN4258:1998 BSI 05-1999 3 0 Introduction For the purpose of standardization of metallic materials, AECMA had originally based the organization of this standardization on a system which provided strong interlinks between a material stand
20、ard referring to EN2500 and its supporting standards. Since these links did not allow the partial use of the supporting standards, the following amendments have been introduced to ensure that: strongly interlinked standards are limited to those strictly necessary to ensure coherency; other standards
21、 may be either used, or replaced by standards of another origin, at the purchasers discretion. The basic change in these links is that the dimensional standards and designation standard for semi-finished products, where applicable, have been dissociated from the material standard. Additionally, prod
22、uct qualification procedures are being introduced. Pending the updating of the standards, these two organizations exist in parallel: the original one described by EN2500; the new one described in this standard (seeAnnex A and Annex B). To enable progressive updating of the standards, an intermediate
23、 procedure is to be followed, as described inAnnex C, pending full introduction of the new organization. 1 Scope This standard specifies the general organization of metallic material standards, their links with other types of EN standards and their use, for aerospace applications. It corresponds to
24、level 0 (see4.1). 2 Normative references This European Standard incorporates by dated or undated reference provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendm
25、ents to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 2032-1, Aerospace series Metallic materials Part1: Designation 1) . EN 2032-2,
26、 Aerospace series Metallic materials Part2: Coding of metallurgical condition in delivery condition. EN 2043, Aerospace series Metallic materials General requirements for semi-finished product qualification (excluding forgings and castings) 1) . EN 2078, Aerospace series Metallic materials Manufactu
27、ring schedule Inspection schedule Inspection and test report Description and rules for use. EN 2500, Aerospace series Instructions for the drafting and use of metallic material standards 2) . EN 2600, Aerospace series Designation of metallic semi-finished products Rules 1) . EN 4000, Aerospace serie
28、s Metallic materials Rules for drafting and presentation of dimensional standards for semi-finished products 1) . EN 4179, Aerospace series Metallic materials Qualification and approval of personnel for non destructive testing 1) . EN 4259, Aerospace series Metallic materials Definitions of general
29、terms 3) . EN 4260, Aerospace series Metallic materials Rules for drafting and presentation of technical specifications 1) . EN 4261, Aerospace series Metallic materials Rules for drafting and presentation of test method standards 1) . EN 4268, Aerospace series Metallic materials Heat treatment faci
30、lities 3) . EN 4500, Aerospace series Metallic materials Rules for drafting and presentation of material standards 4) . 1) Published as AECMA Prestandard at the date of publication of this standard 2) Series of parts, published as AECMA Prestandards at the date of publication of this standard 3) In
31、preparation at the date of publication of this standard 4) Series of parts, published as AECMA Prestandards at the of publication of this standardEN4258:1998 4 BSI 05-1999 TR 2410, Aerospace series Relationship between dimensional standards and metallic material standards 5) . 3 Definitions For the
32、purposes of this standard, the following definitions apply: 3.1 family of metallic materials group of metallic materials characterized by a base element or a group of base elements in several different semi-finished product forms: aluminium and aluminium alloys; magnesium alloys; heat resisting allo
33、ys (nickel or cobalt or iron base); titanium and titanium alloys; steel; filler metals for brazing; etc. 3.2 semi-finished products generic term used to indicate that the material as supplied does not necessarily have any relation to the exact form, dimensions or condition in which that material is
34、used as a final component this term may refer to one of the following types: wrought products (e.g. bar, sheet, sections) or cast products (e.g. rod, amorphous brazing foil) characterized by their form within a range of standardized dimensions; products of non-standardized form and dimensions produc
35、ed by the same metallurgical technique (e.g. forging stock, remelting stock); blanks manufactured from the products stated above, of non-standardized form and dimension (e.g. forgings, castings). 4 Description of the types of EN standards There are five levels of EN standards, numbered from0 to4 (se
36、eAnnex A). For the intermediate procedure, see Annex C. 4.1 General standard (level0) 4.2 Basic standards (level1) They define the wording and/or specify conventional rules that provide the basis of understanding between the writer and the user of standards specifying rules (see4.3) and semi-finishe
37、d product definition documents (see4.4). They are the following: 4.3 Standards specifying rules (level2) They specify the specific rules for the drafting and presentation of the semi-finished product definition documents (see4.4). They are the following: and during the intermediate procedure: 4.4 Se
38、mi-finished product definition documents (level3) 4.4.1 Material standards They specify a series of technical requirements relating to a metallic material semi-finished product, in one or several delivery conditions and only one use condition. 4.4.2 Technical specifications They specify, for the sem
39、i-finished products of a metallic material family, general and specific technical requirements related to: manufacturing; quality assurance (qualification, acceptance, etc.); the preparation and procedures for inspection (including test frequency); the order and shipment. 5) Published as AECMA Techn
40、ical Report at the date of publication of this standard Explanatory standard for the organization of the whole collection EN 4258 definitions of the general terms EN 4259 definitions of manufacturing schedule, inspection schedule and inspection and test report EN 2078 material designation EN 2032-1
41、coding of metallurgical condition inthe delivery condition EN 2032-2 material standards EN 4500 series technical specifications EN 4260 test method standards EN 4261 dimensional standards EN 4000 general requirements for qualification EN 2043EN4258:1998 BSI 05-1999 5 4.4.3 Test method standards They
42、 specify instructions concerning: principle; reagents and/or associated materials; apparatus; preparation and retention of test samples and/or test pieces; procedure(s). for determination of a characteristic. 4.4.4 Dimensional standards They specify, for each form of semi-finished product in a famil
43、y of metallic materials: geometry; dimensions; associated tolerances. 4.4.5 Designation standards for semi-finished products They specify the rules for designation of metallic semi-finished products, e.g.: EN2600. 4.4.6 Technical Reports They group information in a practical way, e.g. 4.5 Supplement
44、ary standards for quality assurance (level4) They specify supplementary quality assurance requirements concerning e.g.: personnel; facilities; processes. For example the following: 5 Links between types of EN standards and use 5.1 Level 1, 2 and 4 standards 5.1.1 Basic standards (level1) shall be sy
45、stematically used in defining the semi-finished product definition documents (level3), see5.2. 5.1.2 Rules (level2) for the drafting and presentation of semi-finished product definition documents (level3), shall be systematically applied. 5.1.3 Supplementary standards for quality assurance (level4)
46、are only referred to in the relevant standards where their application is considered necessary. NOTEThe supplementary standards for quality assurance may also be external to the collection (e.g. ISO, ASTM) after agreement between the manufacturer and the purchaser. 5.2 Level 3 standards 5.2.1 The ma
47、terial standard is the lead document that provides the basis of understanding between the manufacturer and the purchaser. As such, the requirements of the material standard shall override any other different requirements of any other referenced level3 standard (seeAnnex B). 5.2.2 The material standa
48、rd shall refer to the relevant technical specification. NOTEThis link is mandatory for coherency of the collection. 5.2.3 The material standard and the relevant technical specification shall refer to test method standards, where required. NOTE 1The test method standards from the original organizatio
49、n remain valid for the new organization. NOTE 2Test method standards external to the collection may also be used (e.g. ISO, ASTM). 5.2.4 Dimensional standards shall not be referred to in the material standards. Dimensions shall be independently specified by the purchaser on the order, in accordance with the requirements of the technical specification or normative documents from another origin. 5.2.5 D
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