1、BRITISH STANDARDBS EN 3043:2008Aerospace series Fasteners, externally threaded, in heat resisting steel FE-PA92HT (A286) Classification: 900 MPa/650 C, manufacturing method optional Technical specificationICS 49.030.01g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g5
2、4g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 3043:2008This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2008 BSI 2008ISBN 978 0 580 60316 7National forewordT
3、his British Standard is the UK implementation of EN 3043:2008. The UK participation in its preparation was entrusted to Technical Committee ACE/12, Aerospace fasteners and fastening systems.A list of organizations represented on this committee can be obtained on request to its secretary.This publica
4、tion does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.Amendments/corrigenda issued since publicationDate CommentsEUROPEAN STANDARD NORME EUROPENNE
5、 EUROPISCHE NORM EN 3043 May 2008 ICS 49.030.01 English Version Aerospace series - Fasteners, externally threaded, in heat resisting steel FE PA92HT (A286) - Classification: 900 MPa/650 C, manufacturing method optional - Technical specification Srie arospatiale - Elments de fixation, filets, en acie
6、r rsistant chaud FE-PA92HT (A286) - Classification: 900 MPa/650 C - Mode de fabrication non impos - Spcification technique Luft- und Raumfahrt - Verbindungselemente mit Auengewinde aus hochwarmfestem Stahl FE-PA92HT (A286) - Klasse: 900 MPa/650 C, Herstellverfahren nach Wahl - Technische Lieferbedin
7、gungen This European Standard was approved by CEN on 12 December 2007. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliograph
8、ical references concerning such national standards 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 translation under the responsibility of a C
9、EN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
10、Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36
11、B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 3043:2008: E2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Terms and definitions .5 4 Certification and quality assurance.6 4.1 Acceptance.6 4.2 Q
12、uality system certification7 4.3 Responsibility for inspection and tests 7 4.4 Inspection and test report.7 5 Technical requirements and test method .7 Bibliography 22 Figures Figure 1 Distortion in fillet area (see 5.3.5). 18 Figure 2 Non-permissible laps, seams and surface irregularities (see 5.5.
13、3.2) 19 Figure 3 Permissible laps, seams and surface irregularities (see 5.5.3.2) 20 Figure 4 Crest lap imperfections (see 5.5.3.2) 20 Figure 5 Metallurgical specimens (see 5.5.1) . 21 Tables Table 1 Technical requirements and test method . 7 Table 2 Summary of test Production acceptance. 14 Table 3
14、 Minimum tensile loads 14 Table 4 Classification of defects . 15 Table 5 Sampling plans for visual inspections and dimensional characteristics 16 Table 6 Sampling plans for the inspection of mechanical and metallurgical characteristics 16 Table 7 Thread discontinuities Maximum depth of permissable f
15、aults (see 5.5.7.2) 17 Table 8 Variable sampling for tensile test (alternative method). 17 BS EN 3043:20083 Foreword This document (EN 3043:2008) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-STAN). After enquiries and votes carried out in acc
16、ordance 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
17、of an identical text or by endorsement, at the latest by November 2008, and conflicting national standards shall be withdrawn at the latest by November 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
18、 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, Eston
19、ia, 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. BS EN 3043:20084 1 Scope This standard specifies the technical and qual
20、ity assurance requirements for externally threaded fasteners in material FE-PA92HT (A286) of tensile strength class 900 MPa at room temperature, maximum test temperature of material 650 C. The externally threaded fasteners specified here may be manufactured by machining from bar or by forging at the
21、 manufacturers option, if forged there is no requirement for control of grain flow. Primarily for aerospace applications it is applicable to such externally threaded fasteners when referenced on the product standard or drawing. 2 Normative references The following referenced documents are indispensa
22、ble 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 2398, Heat resisting steel FE-PA92-HT Rm 900 MPa Bars for machined bolts D 25 mm Aerospace Seri
23、es1)EN 2399, Heat resisting steel FE-PA92-HT Rm 900 MPa Bars for forged bolts D 25 mm Aerospace Series1)EN 3039, Aerospace series Quality systems Supplementary requirements to ISO 9002 applicable for the manufacture/processing of material for propulsion standard parts EN 3639, Heat resisting alloy F
24、E-PA2601 Softened and cold worked Wire for forged fasteners D 15 mm, 900 MPa Rm 1 100 MPa1)ISO 468, Surface roughness; Parameters, their values and general rules for specifying requirements ISO 2859-1, Sampling procedures for inspection by attributes Part 1: Sampling schemes indexed by acceptance qu
25、ality limit (AQL) for lot-by-lot inspection ISO 3452, Non destructive testing Penetrant inspection General principles ISO 3534-1, Statistics Vocabulary and symbols Part 1: General statistical terms and terms used in probability ISO 3534-2, Statistics Vocabulary and symbols Part 2: Applied statistics
26、 ISO 7961, Aerospace Bolts Test methods ISO 9001, Quality management systems Requirements 1) Published as AECMA prestandard at the date of publication of this standard. BS EN 3043:20085 3 Terms and definitions 3.1 production batch quantity of finished parts fabricated by the same process from a sing
27、le material cast (single heat of alloy), having the same basic part number and diameter, heat treated together to the same specified condition and produced as one continues run 3.2 inspection lot consists of parts from a single production batch of the same part number which completely defines the pa
28、rt 3.3 Discontinuities 3.3.1 crack rupture in the material which may extend in any direction and which may be intercrystalline or transcrystallyne in character 3.3.2 seam longitudinal surface defect in the form of an unwelded open fold in the material 3.3.3 lap surface defect caused by folding over
29、metal fins or sharp corners and then rolling or forging them into the surface 3.3.4 inclusion non-metallic particles originating from the material making process. They may exist as discrete particles or strings of particles extending longitudinally 3.4 test temperature ambient temperature, unless ot
30、herwise specified 3.5 simple random sampling2)the taking of n items from a population of N items in such a way that all possible combinations of n items have the same probability of being chosen 3.6 critical defect2) a defect that according to judgement and experience, is likely to result in hazardo
31、us or unsafe conditions for individuals using, maintaining, or depending upon the considered product, or that is likely to prevent performance of the function of a major end item 3.7 major defect2) a defect other than critical, that is likely to result in a failure or to reduce materially the usabil
32、ity of the considered product for its intended purpose 2) Definitions taken in ISO 3534-1:2006 and ISO 3534-2:2006. BS EN 3043:20086 3.8 minor defect2)a defect that is not likely to reduce materially the usability of the considered product for its intended purpose, or that is a departure from establ
33、ished specification having little bearing on the effective use or operation of this product 3.9 sampling plan2) a plan according to which one or more samples are taken in order to obtain information and possibly to reach a decision 3.10 limiting quality LQ102)in a sampling plan, a quality level whic
34、h corresponds to a specified and relatively low probability of acceptance in this case 10 % probability of acceptance. It is the limiting lot quality characteristic that a lot of this quality would occur When expressed as a per cent defective, it may be referred to as a lot tolerance per cent defect
35、ive 3.11 acceptable quality level2) a quality level which in a sampling plan corresponds to a specified but relatively high probability of acceptance It is the maximum per cent defective (or the maximum number of defects per hundred units) that, for purposes of sampling inspection, can be considered
36、 satisfactory as a process average 3.12 finished part a part ready for use, inclusive of any possible treatments and/or surface coatings, as specified in the dimensional standard or drawing 4 Certification and quality assurance The allocation of tests corresponding to the requirements of this standa
37、rd is as follows. 4.1 Acceptance 4.1.1 Purpose The purpose of acceptance tests is to check, as simply as possible, by a method representative of actual use conditions, with the uncertainty inherant to statistical sampling, that the bolts constituting the batch satisfy the requirements of this standa
38、rd. 4.1.2 Conditions Acceptance tests are summarised in Table 2. They shall be performed on each batch. Table 1 specifies the test method and sampling plan to be used for each test. Bolts from the batch to be tested shall be selected by simple random sampling. Each bolt may be submitted to several t
39、ests. The bolts to be subjected to destructive tests may be those on which non-destructive tests have been performed. BS EN 3043:20087 4.2 Quality system certification 4.2.1 Purpose The purpose of quality system certification is to ensure that the manufacturer has demonstrated the acceptability of h
40、is quality system and his ability for continuing production of parts according to this standard, to the required level of quality. 4.2.2 Requirements and procedure The requirements and procedures for quality system certification shall be according to the requirements of ISO 9001 and EN 3039. 4.3 Res
41、ponsibility for inspection and tests The manufacturer is responsible for the performance of all inspection and test requirements as specified herein. Each manufacturer will use their own or exceptionally, any other facilities approved in accordance with 4.2 for the implementation of these inspection
42、 and test requirements. 4.4 Inspection and test report A test report showing actual numerical values shall be provided at the purchasers option as part of the terms of the purchase order. 5 Technical requirements and test method Table 1 Technical requirements and test method A = Production acceptanc
43、e requirements (4.1). Clause Characteristic Technical requirement Inspection and test method A Sample size 5.1 Material Material FE-PA92-HT according to specification EN 2398, EN 2399 or EN 3639 supplied by an approved source: shall be used for the manufacture of parts to this standard. As stated in
44、 the material specification. 5.2 Dimensions; tolerances of form and position; threads and quality A Tables 4 and 5 5.2.1 Dimensions The dimensions of the finished parts shall conform to the product standard or definition document. All dimensions shall be controlled by an approved system of gauging.
45、5.2.2 Tolerances of form and position Tolerances of form and position shall conform to the product standard or definition document. Tolerances of form and position shall be controlled by an approved system of gauging. BS EN 3043:20088 Table 1 (continued) A = Production acceptance requirements (4.1).
46、 Clause Characteristic Technical requirement Inspection and test method A Sample size 5.2.3 Threads Threads shall conform to the product standard or definition document. Threads shall be gauged by an approved system of gauging. 5.3 Manufacturing Parts may be manufactured by machining from material E
47、N 2398 or by forging from material EN 2399 or EN XXXX. 5.3.1 Machined from bar parts Parts manufactured from material in the softened, cold worked and solution treated condition shall be semi-finish machined and then precipi-tation heat treated per 5.3.3.2 prior to final machi-ning, thread rolling (
48、and fillet rolling if specified on the product standard). Parts manufactured from material in the softened, cold worked, solution treated and precipi-tation treated condition shall be finished, machined, thread rolled etc. without further heat treatment. 5.3.2 Forged parts Forged parts may be formed
49、 by hot or cold forging. If hot forged the forging temperature shall not exceed 1 150 C and shall be air cooled. The heating equip-ment for forging shall be of a type which ensures a consistent temperature throughout the batch. The forged blanks to be solution treated and precipi-tation treated. 5.3.3 Heat treatment The heat treatment medium or atmosphere shall not cause any surface contami-nation except as permitted by 5.5.2. Any scale which will not be removed by subseq
