1、STD-AECMA PREN 42bO-ENGL 1776 10123Ll 0011357 51b Edition approved for publication AECMA STANDARD NORME AECMA AECMA NORM Comments should be sent within six months after the date of publication to C5 Chairman prEN 4260 Edition P 1 January 1996 PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUST
2、RIES (AECMA) Gulledelle 94 - B-1200 BRUXELLES - Tel. (32) 2 775 81 10 - Fax. (32) 2 775 81 11 ICs : 49.040.1 O Descriptors : ENGLISH VERSION Aerospace series Metallic materials Rules for drafting and presentation of technical specifications Srie arospatiale Luft- und Raumfahrt Matriaux mtalliques Me
3、tallische Werkstoffe Rgles pour la rdaction et la prsentation des spcifications techniques Regeln fr die Abfassung und Gestaltung von Technischen Lieferbedingungen This “Aerospace Series” Prestandard has been drawn up under the responsibility of AECMA (The European Association of Aerospace Industrie
4、s). It is published on green paper for the needs of AECMA-Members. It has been technically approved by the experts of the concerned Technical Committee following comment by the Member countries. Subsequent to the publication of this Prestandard, the technical content shall not be changed to an exten
5、t that interchangeability is affected, physically or functionally, without re-identification of the standard. After examination and signature of the AECMA Standard Checking Centre (NPS) and formal agreement of the Official Services of the Member countries it will be submitted as a draft European Sta
6、ndard to CEN (European Committee for Standardization) for formal vote. 1996-01 -31 AECMA Gulledelle 94 B-1200 BRUXELLES Mr Odorico I I I aecma 1996 STD-AECMA PREN 42b0-ENGL L77b LOLZ3LL 001L3b0 238 Page 2 prEN 4260 : 1996 Contents list O Introduction 1 Scope 2 Normative references 3 Framework and st
7、ructure 4 Content Annex A (normative) Annex B (normative) Page 3 prEN 4260 : 1996 O Introduction This standard is part of the series of EN metallic materials standards for aerospace applications. The general organisation of this series is described in EN 4258. 1 Scope This standard specifies the rul
8、es for the drafting and presentation of technical specifications for metallic materials. 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 pu
9、blications are listed hereafter. For dated references, subsequent amendments 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 2000 E
10、N 2078 EN 2600 EN 3042 EN 4258 EN 4259 EN 4268 EN 4500-1 TR 2410 TR 3040-2 Aerospace series - Quality assurance - EN aerospace products - Approval of the quality system of manufacturers Aerospace series - Metallic materials - Manufacturing schedule - Inspection schedule - Inspection and test report
11、- Description and rules for use Aerospace series - Designation of metallic semi-finished products - Rules 1) Aerospace series - Quality assurance - EN aerospace products - Qualification procedure Aerospace series - Metallic materials - General organisation of standardisation - Links between types of
12、 EN standards and their use 1) Aerospace series - Metallic materials - Definition of general terms 2) Aerospace series - Metallic materials - Heat treatment facilities 2) Aerospace series - Metallic materials - Rules for drafting and presentation of material standards - Part 1 : General rules 2) Aer
13、ospace series - Relationship between dimensional standards and metallic material standards 3) Aerospace series - Quality assurance - En aerospace products - Part 2 : List of qualified products 3) 1) Published as AECMA Prestandard at the date of publication of this standard 2) In preparation at the d
14、ate of publication of this standard 3) Published as AECMA Technical Report at the date of publication of this standard Page 4 prEN 4260 : 1996 3 Framework and structure 3.1 General Where necessary the technical specification may be subdivided into several parts (e.g. EN xxxx-I, EN xxxx-2, etc, where
15、 part 1 is always the general part). In such cases all general requirements should be incorporated in Part 1 (general part) and the specific requirements in Part 2 onwards (specific parts). 3.2 Required elements The Technical Specification shall include the following elements in the given order: - T
16、itle ; - Clause - O Introduction ; - Clause - 1 Scope : - Clause - 2 Normative references ; - Clause - 3 Definitions ; - Clause - 4 Requirements ; - Clause - 5 Qualification ; - Clause - 6 Release testing ; - Clause - 7 Preparation for delivery. 4 Content Standard sentences, placed in a frame, are l
17、isted below for the different clauses of the technical specifications and are mandatory. When necessary, further information is indicated in italics. 4.1 Title The title shall give sufficient information to unambiguously identify the subject of this standard. 4.1 .I General part Aerospace series Fam
18、ily of metallic materials (Steel, aluminium .) Type of product (wrought products, castings, filler metal for brazing .) Technical specification Part 1 : General requirements 4.1.2 Specific Part Aerospace series Family of metallic materials (Steel, aluminium .I Type of product (wrought products, cast
19、ings, filler metal for brazing .I Technical spec if cat ion Part X : Form(s) product (bar, tube for structure, forging stock .) Page 5 prEN 4260 : 1996 4.2 Clause O : Introduction O Introduction This standard is part of the series of EN metallic material standards for aerospace applications. The gen
20、eral organisation of this series is described in EN 4258. 4.3 Clause I : Scope In this clause the scope and application limits of the technical specification shall be stated. 4.3.1 General part 1 Scope This standard defines the general requirements for manufacture, inspection and testing of products
21、 in . (complete with metallic material family e.g. heat resisting alloys). Specific requirements applicable to each type of product are defined in Part 2 onwards (if applicable). It shall be applied when referred to in the EN material standard unless otherwise specified on the drawing, order or insp
22、ection schedule. 4.3.2 Specific Part 1 Scope This standard defines the specific requirements for . . . . . . . . . . . . . . . (complete with type of products and metallic material family, e.g. bar in heat resisting alloys). It shall be applied in conjunction with EN XXXX-1 (insert EN number of the
23、generalpart). 4.4 Clause 2 : Normative references 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 da
24、ted references, subsequent amendments 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. (followed by the list of documents, give their t
25、itles, to which reference is made in the text). 4.5 Clause 3 : Definitions This clause shall only contain definition(s) not included in EN 4259. 4.5.1 General part 3 Definitions For the purposes of this standard the following definitions apply : Definition of general terms see EN 4259 (add additiona
26、l definitions, if necessary). Page 6 prEN 4260 : 1996 4.5.2 Specific part I 3 Definitions For the purposes of this standard the following definitions apply : General definitions see EN XXXX-1 (add additional definitions, if necessary) I I 4.6 Clause 4 : Requirements This clause shall contain all the
27、 necessary technical requirements for the manufacture, inspection and testing of the products. This clause is subdivided into two sub-clauses : - clause 4.1 : General requirements ; - clause 4.2 : Technical requirements. 4.6.1 General part 4 Requirements 4.1 General requirements 4.1.1 Manufacturing
28、schedule The product shall be manufactured to fulfil the requirements of the relevant material standard and this technical specification. The manufacturer shall define the raw material, processes and inspection requirements in a manufacturing schedule in accordance with EN 2078. The manufacturer sha
29、ll make this available to purchaser or mandated body upon request. Once approved any modifications to the manufacturing schedule shall be in accordance with EN 2078 and EN 3042. 4.1.2 Traceability Each semi-finished product shall be traceable to the cast production batch and/or heat treatment batch
30、at all stages of manufacture and delivery. 4.1.3 Freedom from defects All products shall be free from defects not complying with the requirements of the material standard or order, or which may be prejudicial to the subsequent manufacture and/or use of the products. 4.1.4 Health and safety The produ
31、ct in the delivery condition shall fulfil the current health and safety laws of the area of the country where it is to be delivered. A product safety data sheet shall be available. 4.2 Technical requirements 4.2.1 General The product shall satisfy the requirements of the relevant material standard a
32、nd/or the order. 4.2.1 .I Heat treatment Unless otherwise specified, heat treatment facilities and procedures shall conform to EN 4268. The product shall be supplied in the delivery condition specified in the material standard and/or order. If a specific temperature (value and tolerance) is stated i
33、n the material standard or the order, that temperature shall be mandatory. If a temperature range is stated, a temperature within that range reduced by the tolerances of the furnace shall be selected. The charge shall be maintained at the temperature selected subject to the furnace tolerances in tab
34、le . for the period stated. Where no period is stated this shall be at the discretion of the manufacturer. Table . Page 7 prEN 4260 : 1996 4.2.1.2 Chemical composition The test samples used for analysis shall be representative of the product. The method of analysis shall be at the option of the manu
35、facturer, but in cases of dispute, the reference method set out in the relevant EN or IS0 standard shall be used. If no EN or IS0 standard exists, a fundamental and agreed method of chemical analysis calibrated against accepted reference standards shall be used. 4.2.1.3 Preparation of samples Test s
36、amples shall not be worked after removal from the product they represent, except in cases where the product is intended for further working (forging stock), or when permitted by the material standard or the order. - samples and associated test pieces shall be marked in such a manner that their ident
37、ity and orientation with respect to the product and the batch is maintained - samples taken from finally heat treated products (condition of use) shall not be further treated - samples representing products in a condition other than the condition of use shall be heat treated in accordance with the m
38、aterial standard before testing. 4.2.1.4 Dimensions Dimensions and tolerances shall conform to the requirements of the order or drawing. The frequency of examination adopted by the manufacturer shall be sufficient to enable him to certify compliance with the requirements. NOTE : TR 2410 gives the re
39、lationship between EN dimensional standards and EN material standards. 4.2.1.5 Semi-finished product designations When required, semi-finished product designations shall conform to the requirements of the order. NOTE : The semi-finished product designation system to be used may be defined by EN 2600
40、, a national standard, a company standard or a project standard. 4.6.2 Specific part 4 Requirements 4.1 General requirements See EN XXXX-1 (insert EN number of general part) 4.2 Technical requirements See EN XXXX- 1 (insert EN number of general part) 4.2.1 General The product shall satisfy the requi
41、rements of the relevant material standard. Unless otherwise specified in the material standard, the test method and test frequency are given in annex A for qualification testing and in annex B for release testing. Add an y relevant general technical requirements as necessary. 4.2.2 Specific Specify
42、under this clause all the requirements concerning location of test samples, test method, frequency, (e.g. tensile properties, fracture toughness, etc.). 1 STD-AECMA PREN LiZbO-ENGL 1776 m L0123LL 00113bh 75h Page 8 prEN 4260 : 1996 4.7 Clause 5 : Quality assurance 4.7.1 Principle The product qualifi
43、cation procedure is dependent on the type of product. In general product qualification as described hereafter, according to EN 3042, is controlled by the mandated body but does not apply to castings or forgings. For castings or forgings, product qualification will be in accordance with the requireme
44、nts of the drawing and/or order, and will be controlled by a manufacturing and inspection schedule defining pre- production and production procedures prepared and approved in accordance with EN 2078. 4.7.2 General part 5 Quality assurance 5.1 Approval of quality system See EN 2000. 5.2 Product quali
45、fication Product qualification shall be in accordance with EN 3042. 5.2.1 Principle The product tested for qualification shall be manufactured on the same equipment and in accordance with the same specification and process procedures as the serial products. Product qualification to a material standa
46、rd, includes the manufacturers acceptance to a quality audit of the entire production procedure, from the raw material acquisition, through processing steps to batch release and the use of relevant standards including quality assurance documentation. If required a confidential audit can be carried o
47、ut. Adjustment of the manufacturing schedule to accommodate improved manufacturing techniques to the state of the art is the manufacturers responsibility but may require requalification of the product to the material standard. As part of the product qualification, the mandated body reserves the righ
48、t to carry out processing trials and/or product qualification tests in house or at an independent facility. All results of the product qualification tests including reference to the manufacturing schedule shall be presented in a qualification test report (see subclause 5.2.4). Upon successful produc
49、t qualification the manufacturers name and qualified product will be recorded in TR 3040-2. The qualification is directed to the raw material specifications or sources and the equipment and the processes which have been identified in the manufacturing schedule. NOTE : To use a certain product in an aerospace application product qualification alone may not be sufficient ; additional pre-and/or post-qualification testing may be required by the user : - Pre-qualification : manufacturers data or screening tests to verify basic properties according to the requirements of the relevan
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