1、 STDmBSI BS EN 4258-ENGL 1998 H Lb24bb9 0721263 O03 BRITISH STANDARD AEROSPACE SERIES Metallic materials - General organization of standardization - Links between types of EN standards and their use The European Stanard EN 42581998 has the status of a British Standard ICs 49.025.01 NO COPYING WITHOU
2、T BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN 4258:1998 STD.BSI BS EN 4258-ENG1 1998 lb24bb9 03212b4 T4T D AmdNo. Date BS EN 42681998 Text affected This British Standard, having been prepared under the direction of the Engineering Sector Board, was published under the authority of the
3、Standards Board and comes into effect on 16 October 1998 O BSI 1998 National foreword This British Standard is the English language version of EN 4258:1998. The UK participation in its preparation was entrusted to Technical Committee ACW61, Inspection and testing requirements for aerospace metallic
4、materials, which has the responsibility t: - aid enquires to understand the te% - present to the responsible ir,ternational/European committee any enquiries on the inkqretaiion, or proposals for change, and keep the UK inkrests - monitor related intedonal and European developments and promulgate iIl
5、fOlm them in the UX. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the sec
6、tjon entitled “Intdonal Standards Correspondence Index“, or by using the “Find“ facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract Users of British Standards are responsible for their correct application. Comp
7、liance 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, the EN title page, pages 2 to 10, an inside back cover and a back cover. ISBN O 580 30664 6 STD.BS1 BS EN 4258-ENGL 1998 m I1624669
8、 0723265 986 m EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 4256 May 1998 ICs 49.025.01 Descriptors: aircraft industry, metals, semi-finished products, definitions, standards, description, organization, reference to standards, level, quantity, utilkation English version Aerospace series - Me
9、tallic materials - General organization of standardization - Links between types of EN standards and their use Srie arospatiale - Matriaux mtalliques - Orgemisaion gnrale de la normalisation - Liens entre les iypes de normes EN et leur utilisation Luft- und Raumfahrt - Metallische Werkstoffe - Allge
10、meine Gliederung der Normung - Verknpfung der Arten von EN- Normen und ihre Anwendung This European Standard was approved by CEN on 23 February 1998. CEN members are bound to canply with the CENICENELEC Intemal Regulaticm which stipulate the condions for giving this European Standard the status of a
11、 national standard without any alteration. Up-to-date lists and Mbliographicai references concerning such national standerds may be obtekied on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, Germen). A version i
12、n any other language made by transiaiion under the responsibility of a CEN member into its own language and notifled io the Central Secretariat has the same status as the offiaal versions. CEN members are the national stendards bodies of Austria, Belgium, Czech RepuMic, Denmark, Finland. France, Ger
13、many, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Nomay, Portugal, Spain, Sweden, Switzerland and United Kingdam. EUROPEAN CO- EOR STANARDZATiON EUROPAISCHES KOMITEE FOR NORMUNG COMITE EUROPEEN DE NORMALISATION Central Secmtariat: rue da Stauut, 36 81050 Bniuelr CB 1998 CEN All rights
14、of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 4258:1998 E STD-BSI ES EN 4258-ENGL 2998 W Lb24bb9 07222bb 812 W Page 2 EN 4258:1998 Foreword This European Standard has been prepared by the European Association of Aerospace Manufacturers (AECMA).
15、 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 Officiel Services of the member countries of AECMA, prior to its presentation to CEN. This European Standard shall be given the status
16、 of a national standard, either by publication of an identical text or by endorsement, at the latest by November 1998, and conflicting national standards shall be withdrawn at the latest by November 1998. According to the CENKENELEC Internal Regulations, the national standards organizations of the f
17、ollowing countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Contents list Page O Introduction 1 Sc
18、ope . 2 Normative references 3 Definitions . 4 Description of the types of EN standards 5 Links between types of EN standards and use . 6 Overview Annex A (normative): New organization Annex B (normative): Use of the material standard Annex C (nonnative): Intermediate procedure . 3 3 3 4 5 6 7 8 9 1
19、0 Page 3 EN 4258:1998 O 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 standard referring to EN 2500 and its supporting standards. Since these l
20、inks 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 may be either used, or replaced by standards of another origin
21、, 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, product qualification procedures are being introduced. Pending the
22、 updating of the standards, these two organizations exist in parallel: - the original one described by EN 2500; - the new one described in this standard (see annexes A and BI. To enable progressive updating of the standards, an intermediate procedure is to be followed, as described in annex C, pendi
23、ng 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 level O (see 4.1). 2 Normative references This European Sta
24、ndard 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 amendments to or revisions of any of these publications apply to
25、 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 - Part 1 : Designation 1) EN 2032-2 Aerospace series - Metallic materials - Part 2: Coding
26、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 - Manufacturing schedule - Inspection schedule - Inspection
27、 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 1) Published as AECMA Prestandard at the date of publication of this
28、 standard 2) Series of parts, published as AECMA Prestandards at the date of publication of this standard STD.BS1 BS EN 4258-ENGL 1998 Lb24bb 0723268 695 Page 4 EN 4258:1998 EN 4000 Aerospace series - Metallic materials - Rules for drafting and presentation of dimensional standards for semi-finished
29、 products 3) EN 4179 Aerospace series - Metallic materials - Qualification and approval of personnel for non destructive testing 3) EN 4259 Aerospace series - Metallic materials - Definitions of general terms 4) EN 4260 Aerospace series - Metallic materials - Rules for drafting and presentation of t
30、echnical specifications 3) EN 4261 Aerospace series - Metallic materials - Rules for drafting and presentation of test method standards 3) EN 4268 Aerospace series - Metallic materials - Heat treatment facilities 4) EN 4500 Aerospace series - Metallic materials - Rules for drafting and presentation
31、of material standards 5) TR 2410 Aerospace series - Relationship between dimensional standards and metallic material standards 6) 3 Definitions For the purposes of this standard, the following definitions apply: 3.1 Family of metallic materials Group of metallic materials characterized by a base ele
32、ment or a group of base elements in several different semi-finished product forms: - aluminium and aluminium alloys; - magnesium alloys; - heat resisting alloys (nickel or cobalt or iron base); - titanium and titanium alloys; - steel; - filler metals for brazing; - etc. 3.2 Semi-finished products Ge
33、neric 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 used as a final component. This term may refer to one of the following types: - wrought products ag. bar, sheet, sections) or cast pro
34、ducts (ag. rod, amorphous brazing foil) characterized by their form within a range of standardized dimensions; - products of non-standardized form and dimensions produced by the same metallurgical technique ( e.g. forging stock, remelting stock); - blanks manufactured from the products stated above,
35、 of non-standardized form and dimension 1e.g. forgings, castings). 3) Published as AECMA Prestandard at the date of publication of this standard 4) In preparation at the date of publication of this standard 5) Series of parts, published as AECMA Prestandards at the of publication of this standard 6)
36、 Published as AECMA Technical Report at the date of publication of this standard STD-BSI BS EN 4258-ENGL 1998 Lb24bbS 072L2b9 521 4 Description of the types of EN standards There are five levels of EN standards, numbered from O to 4 (see annex A). For the intermediate procedure, see annex C. 4.1 Gen
37、eral standard (level O) - Explanatory standard for the organization of the whole collection . EN 4258 4.2 Basic standards (level 1) 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 (see 4.3
38、) and semi-finished product definition documents (see 4.4). They are the following: - definitions of the general terms EN 4259 - definitions of manufacturing schedule, inspection schedule and inspection and test report . - material designation . EN 2032-1 - coding of metallurgical condition in the d
39、elivery condition 4.3 They specify the specific rules for the drafting and presentation of the semi-finished product definition documents (see 4.4). They are the following: Standards specifying rules (level 2) - material standards . EN 4500 series - technical specifications - test method standards .
40、 EN 4261 - dimensional standards EN 4000 . and during the intermediate procedure: - general requirements for qualification . EN 2043 4.4 Semi-finished product definition documents (level 3) 4.4.1 Material standards They specify a series of technical requirements relating to a metallic material semi-
41、finished product, in one or several delivery conditions and only one use condition. 4.4.2 Technical specifications They specify, for the semi-finished products of a metallic material family, general and specific technical requirements related to: - manufacturing; - quality assurance (qualification,
42、acceptance, etc.); - the preparation and procedures for inspection (including test frequency); - the order and shipment. 4.4.3 Test method standards They specify instructions concerning: - principle; - reagents and/or associated materials; - apparatus; - preparation and retention of test samples and
43、/or test pieces; - procedure(s). for determination of a characteristic. STD.BSI BS EN 4258-ENGL 1998 I Lb24bb 0721270 243 Page 6 EN 4258:1998 4.4.4 Dimensional standards They specify, for each form of semi-finished product in a family of metallic materials: - geometry; - dimensions; - associated tol
44、erances. 4.4.5 They specify the rules for designation of metallic semi-finished products, e.g.: EN 2600. Designation standards for semi-finished products 4.4.6 Technical Reports They group information in a practical way, e.g. - relationship between dimensional standards and material standards TR 241
45、 O 4.5 They specify supplementary quality assurance requirements concerning e.g.: Supplementary standards for quality assurance (level 4) - personnel; - facilities; - processes. For example the following: - Qualification and approval of personnel for - Heat treatment facilities . . EN 4268 non-destr
46、uctive testing . . EN 4179 5 Links between types of EN standards and use 5.1 Level 1, 2 and 4 standards 6.1.1 Basic standards (level 1) shall be systematically used in defining the semi-finished product definition documents (level 31, see 5.2. 5.1.2 (level 31, shall be systematically applied. Rules
47、(level 2) for the drafting and presentation of semi-finished product definition documents 5.1.3 standards where their application is considered necessary. Supplementary standards for quality assurance (level 4) are only referred to in the relevant NOTE: The supplementary standards for quality assura
48、nce may also be external to the collection (e.g. SO, ASTM) after agreement between the manufacturer and the purchaser. 5.2 Level 3 standards 5.2.1 The material standard is the lead document that provides the basis of understanding between the manufacturer and the purchaser. As such, the requirements
49、 of the material standard shall override any other different requirements of any other referenced levei 3 standard (see annex B). STDaBSI ES EN 425B-ENGL 199B m 1624669 072l127L 5.2.2 The material standard shall refer to the relevant technical specification. NOTE: This 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 1: The test method standards from the original organization remai
