1、BSI Standards Publication BS ISO 9154:2016 Aerospace Bolts, with MJ threads, made of heat-resistant nickel-based alloy, strength class 1 550 MPa Procurement specificationBS ISO 9154:2016 BRITISH STANDARD National foreword This British Standard is the UK implementation of ISO 9154:2016. It supersedes
2、 BS A 363:2000 which is withdrawn. 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 publication does not purport to i
3、nclude all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2016. Published by BSI Standards Limited 2016 ISBN 978 0 580 91523 9 ICS 49.030.20 Compliance with a British Standard cannot confer immunity from legal obligations.
4、 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 29 February 2016. Amendments/corrigena issued since publication Date T e x t a f f e c t e dBS ISO 9154:2016 ISO 2016 Aerospace Bolts, with MJ threads, made of heat-resistant nickel-based alloy
5、, strength class 1 550 MPa Procurement specification Aronautique et espace Vis filetage MJ, en alliage rsistant chaud base de nickel, classe de rsistance 1 550 MPa Spcification dapprovisionnement INTERNATIONAL STANDARD ISO 9154 Second edition 2016-02-15 Reference number ISO 9154:2016(E)BS ISO 9154:2
6、016ISO 9154:2016(E)ii ISO 2016 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2016, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including pho
7、tocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Ch. de Blandonnet 8 CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41
8、22 749 01 11 Fax +41 22 749 09 47 copyrightiso.org www.iso.orgBS ISO 9154:2016ISO 9154:2016(E)Foreword iv 1 Scope . 1 2 Normative references 1 3 Terms and definitions . 1 4 Quality assurance 3 4.1 General . 3 4.1.1 Approval of manufacturers . 3 4.1.2 Qualification of bolts 3 4.1.3 Acceptance of bolt
9、s 3 4.2 Qualification inspection conditions 3 4.3 Acceptance inspection conditions 4 4.4 Use of “statistical process control (SPC)” . 4 5 Requirements 5 Annex A (normative) Passivation treatment .20 Annex B (informative) Cross-sectional areas and formulae for tensile, tension fatigue and stress rupt
10、ure loads .21 Annex C (informative) Cross-sectional areas and formulae for double shear loads .23 Bibliography .25 ISO 2016 All rights reserved iii Contents PageBS ISO 9154:2016ISO 9154:2016(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national st
11、andards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International o
12、rganizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. The procedures used to develop this document and those intended for
13、its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/
14、directives). Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be i
15、n the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement. For an explanation on the meaning of ISO specific terms and expressions
16、related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information The committee responsible for this document is ISO/TC 20, Aircraft and space vehicles, Subcommittee
17、 SC 4, Aerospace fastener systems. This second edition cancels and replaces the first edition (ISO 9154:1999), which has been technically revised. Annex A forms a normative part of this International Standard. Annexes B and C are for information only.iv ISO 2016 All rights reservedBS ISO 9154:2016IN
18、TERNATIONAL ST ANDARD ISO 9154:2016(E) Aerospace Bolts, with MJ threads, made of heat- resistant nickel-based alloy, strength class 1 550 MPa Procurement specification 1 Scope This International Standard specifies the characteristics and quality assurance requirements for MJ threads bolts made of he
19、at-resisting nickel-base alloy, of strength class 1 550 MPa, for aerospace construction. It is applicable whenever it is referenced in a definition document. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its
20、 application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 2859-1, Sampling procedures for inspection by attributes Part 1: Sampling schemes indexed by acceptance quality limit (AQL
21、) for lot-by-lot inspection ISO 3452-1, Non-destructive testing Penetrant testing Part 1: General principles ISO 5855-2, Aerospace MJ threads Part 2: Limit dimensions for bolts and nuts 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 batch qu
22、antity of finished products, manufactured using the same processes, from a single material cast (single heat of alloy) having the same definition document number, diameter, and length code, heat treated together to the same specified condition and produced as one continuous run 3.2 inspection lot qu
23、antity of bolts products from a single production batch (3.1) having the same definition document number 3.3 definition document document specifying directly or indirectly all the requirements for products Note 1 to entry: The definition document may be an International Standard, an in-house standar
24、d, or a drawing. 3.4 crack rupture in the material which may extend in any direction and which may be intercrystalline or transcrystalline in character 3.5 seam longitudinal open surface defect ISO 2016 All rights reserved 1BS ISO 9154:2016ISO 9154:2016(E) 3.6 lap surface defect caused by folding ov
25、er metal fins or sharp corners and then forming them into the surface 3.7 crevice hollow area at thread crest 3.8 inclusions non-metallic particles originating from the material manufacturing process Note 1 to entry: These particles may be isolated or arranged in strings. 3.9 microstructural shearin
26、g shear banding V- or U-shaped rippled grain structure immediately below the thread root or chevron-shaped rippled grain structure within the thread crest 3.10 sampling plan plan according to which one or more samples are taken in order to obtain information and possibly to reach a decision, if poss
27、ible Note 1 to entry: In this International Standard, each sampling plan defines the number of bolts to be inspected as a function of the size of the batch and the acceptance number number of defective items acceptable (Ac) 1) 3.11 simple random sampling sampling of n items from a population of N it
28、ems in such a way that all possible combinations of n items have the same probability of being chosen 3.12 critical defect defect that, according to judgement and experience, is likely to result in hazardous or unsafe conditions for individuals using, maintaining, or depending upon the considered pr
29、oduct, or that is likely to prevent performance of the function of a major end item 3.13 major defect defect other than critical that is likely to result in a failure or to reduce materially the usability of the considered product for its intended purpose 3.14 minor defect defect that is not likely
30、to reduce materially the usability of the considered product for its intended purpose or that is a departure from established specifications having little bearing on the effective use or operation of this product 3.15 limiting quality LQa quality level which corresponds to a specified and relatively
31、 low probability of acceptance Note 1 to entry: It is the limiting lot quality characteristic that the consumer is willing to accept with a low probability that a lot of this quality would occur. 1) Supplementary information taken from ISO 2859-1.2 ISO 2016 All rights reservedBS ISO 9154:2016ISO 915
32、4:2016(E) Note 2 to entry: For the purposes of this International Standard, the limiting quality quoted in Table 4 corresponds to a probability of acceptance of 10 %. 3.16 acceptable quality limit AQL maximum percent defective (or the maximum number of defects per hundred units) that, for purposes o
33、f sampling inspection, can be considered satisfactory as a process average Note 1 to entry: Variant: Quality level, which in a sampling plan, corresponds to a specified but relatively high probability of acceptance. 4 Quality assurance 4.1 General 4.1.1 Approval of manufacturers All parts which are
34、going to be assembled to a flying aircraft, need to be qualified per airworthiness regulations. The manufacturer of these parts shall have a quality system that complies with EASA / FAA or an equivalent regulation such as SAE AS 9100 / EN 9100. Quality documentation for parts produced in accordance
35、with this International Standard, shall be maintained for a minimum period of 10 years. The approval of the manufacturer shall be granted by the Certification Authorities, or their appointed representative, who may be the prime contractor. 4.1.2 Qualification of bolts The purpose of inspections 2)is
36、 to verify that the design and manufacturing conditions of a bolt enable it to satisfy the requirements of this International Standard. The qualification shall be granted by the Certification Authorities in the purchasers country, or their appointed representative, who may be the prime contractor. 4
37、.1.3 Acceptance of bolts The purpose of inspections is to verify, as simply as possible, using a method which is inexpensive, with the uncertainty inherent in statistical sampling, that the bolts satisfy the requirements of this International Standard. They shall be carried out by the manufacturer o
38、r under his responsibility. The manufacturer is responsible for the quality of the bolts manufactured. 4.2 Qualification inspection conditions Unless otherwise specified, the inspection shall be carried out on the following: each type and diameter of bolt; 28 bolts selected from a single inspection
39、lot by simple random sampling. 2) In order to simplify the text, the term “inspections” used in this International Standard also refers to “inspections and tests”. ISO 2016 All rights reserved 3BS ISO 9154:2016ISO 9154:2016(E) The test programme may possibly be reduced, or the qualification granted,
40、 without inspection: Any such decision shall be based on the results obtained on similar types and diameters of bolts, provided that the design and manufacturing conditions are identical. The inspections shall be repeated on any bolt if the manufacturing conditions have modified. Table 2 indicates t
41、he allocation of bolt sample for the inspections. 4.3 Acceptance inspection conditions Inspections shall be carried out on each production batch or inspection lot. Bolts from the batch or lot to be inspected shall be selected by simple random sampling. Each bolt may be submitted to several inspectio
42、ns, provided that none of characteristics to be verified has been previously altered during any of these inspections. The bolts to be subjected to destructive inspections may be those on which non-destructive inspections have been carried out. If a more stringent inspection is deemed necessary, all
43、or part of the qualification inspections may be performed during the acceptance inspections. In this case, the number of bolts submitted is the same as that submitted for qualification inspection. Production batches or inspection lots declared unacceptable after the production acceptance inspections
44、 shall be submitted for re-inspection only after all the defective units have been removed and/or defects have been corrected. In this case, the attribute(s) which caused the rejection shall be verified using a sample of twice the normal size with the same number of defective items acceptable. 4.4 U
45、se of “statistical process control (SPC)” When a characteristic is obtained by a controlled statistical process, the manufacturer has the possibility, in order to declare conformity of the characteristic, of refraining from the final systematic sampling provided for in this International Standard, i
46、f he is capable of formally justifying this choice by using ISO/TR 13425 and the standards quoted in it as a basis. This justification will include the following phases: analysis of the key characteristics of the product; analysis of the risks for each implemented process; determination of the param
47、eters and/or characteristics to be respected under SPC; determination of the capabilities of each process; drawing up an inspection plan and integration in the manufacturing process; drawing up of routes and control charts (ISO 7870-1, ISO 7870-2, ISO 7870-3); use of control charts for data consolid
48、ation; determination of the audits to be run and the control to be carried out to ensure reliability of the device. To be usable in production, this process shall or should be validated beforehand by the qualifying body, either during the qualification phase, or a posteriori according to the case, b
49、y analysing the justificatory file and the results of the qualification inspections such as provided for in Clause 5. Such SPC process not applicable to destructive tests apart from the measurement of the hydrogen content.4 ISO 2016 All rights reservedBS ISO 9154:2016ISO 9154:2016(E) 5 Requirements The requirements of this International Standard are given in Table 1 and, unless otherwise specified, they apply to bolts ready for use. The test temperature, unless otherwise specified, shall be the am
