1、BSI Standards PublicationBS ISO 9809-4:2014Gas cylinders Refillableseamless steel gas cylinders Design, construction andtestingPart 4: Stainless steel cylinders with an Rmvalue of less than 1 100 MPaBS ISO 9809-4:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of
2、 ISO 9809-4:2014.The UK participation in its preparation was entrusted to TechnicalCommittee PVE/3/3, Gas containers - Transportable gas containers- Cylinder design, construction and testing at the time ofmanufacture.A list of organizations represented on this committee can beobtained on request to
3、its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 76315 1ICS 23.020.30Compliance with a British Standard
4、cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 July 2014.Amendments issued since publicationDate Text affectedBS ISO 9809-4:2014 ISO 2014Gas cylinders Refillable seamless steel gas cylinders Des
5、ign, construction and testing Part 4: Stainless steel cylinders with an Rm value of less than 1 100 MPaBouteilles gaz Bouteilles gaz rechargeables en acier sans soudure Conception, construction et essais Partie 4: Bouteilles en acier inoxydable avec une valeur Rm infrieure 1 100 MPaINTERNATIONAL STA
6、NDARDISO9809-4First edition2014-07-15Reference numberISO 9809-4:2014(E)BS ISO 9809-4:2014ISO 9809-4:2014(E)ii ISO 2014 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2014All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any f
7、orm or by any means, electronic or mechanical, including photocopying, 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 officeCase postale 56
8、 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 9809-4:2014ISO 9809-4:2014(E) ISO 2014 All rights reserved iiiContents PageForeword vIntroduction vi1 Scope . 12 Normative references 13 Terms and definitions . 14 Symbol
9、s 25 Inspection and testing 36 Materials . 46.1 General requirements . 46.2 Controls on chemical composition 46.3 Heat treatment 56.4 Cold working or cryoforming . 56.5 Failure to meet test requirements 57 Design 67.1 General requirements . 67.2 Calculation of cylindrical shell thickness . 67.3 Calc
10、ulation of convex ends (heads and bases) 67.4 Calculation of the concave base ends 97.5 Neck design 97.6 Foot rings 107.7 Neck rings . 107.8 Design drawing 108 Construction and workmanship 108.1 General 108.2 Wall thickness . 108.3 Surface imperfections 108.4 Ultrasonic examination . 118.5 Out-of-ro
11、undness . 118.6 Mean diameter . 118.7 Straightness 118.8 Verticality and stability . 118.9 Neck threads 129 Type approval procedure .129.1 General requirements 129.2 Prototype test 139.3 Type approval certificate. 1410 Batch tests 1510.1 General requirements 1510.2 Tensile test . 1610.3 Bend test an
12、d flattening test 1710.4 Impact test . 1810.5 Hydraulic burst test . 2010.6 Intergranular corrosion test . 2311 Tests/examinations on every cylinder .2311.1 General 2311.2 Hydraulic test 2411.3 Hardness test . 2411.4 Leak test . 2411.5 Capacity check 25BS ISO 9809-4:2014ISO 9809-4:2014(E)iv ISO 2014
13、 All rights reserved12 Certification 2513 Marking .25Annex A (informative) Description and evaluation of manufacturing imperfections and conditions for rejection of seamless steel gas cylinders at the time of final inspection by the manufacturer 26Annex B (normative) Ultrasonic examination .32Annex
14、C (informative) Type approval certificate 38Annex D (informative) Acceptance certificate .39Bibliography .42BS ISO 9809-4:2014ISO 9809-4:2014(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of pre
15、paring 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 organizations, governmental and non-governmental, in
16、 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 its further maintenance are described in the ISO/IEC
17、 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/directives). Attention is drawn to the possibility t
18、hat 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 in the Introduction and/or on the ISO list of patent
19、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 related to conformity assessment, as well as informat
20、ion about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 58, Gas cylinders, Subcommittee SC 3, Cylinder design.ISO 9809 consists of the following parts, und
21、er the general title Gas cylinders Refillable seamless steel gas cylinders Design, construction and testing: Part 1: Quenched and tempered steel cylinders with tensile strength less than 1 100 MPa Part 2: Quenched and tempered steel cylinders with tensile strength greater than or equal to 1 100 MPa
22、Part 3: Normalized steel cylinders Part 4: Stainless steel cylinders with tensile strength less than 1 100 MPa ISO 2014 All rights reserved vBS ISO 9809-4:2014ISO 9809-4:2014(E)IntroductionThe purpose of ISO 9809 is to provide a specification for the design, manufacture, inspection, and testing of a
23、 seamless stainless steel cylinder for worldwide usage. The objective is to balance the design and economic efficiency against international acceptance and universal utility.ISO 9809 aims to eliminate the concern about climate, duplicate inspections, and restrictions currently existing because of th
24、e lack of definitive International Standards. This International Standard should not be construed as reflecting on the suitability of the practice of any nation or region.This part of ISO 9809 has been prepared to address the general requirements on the design, construction, and initial inspection a
25、nd test of pressure receptacles of the UN model regulations for the transportation of dangerous goods.6It is intended to be used under a variety of regulatory regimes but has been written so that it is suitable for use with the conformity assessment system in paragraph 6.2.2.5 of the above mentioned
26、 model regulations.vi ISO 2014 All rights reservedBS ISO 9809-4:2014Gas cylinders Refillable seamless steel gas cylinders Design, construction and testing Part 4: Stainless steel cylinders with an Rm value of less than 1 100 MPa1 ScopeThis part of ISO 9809 specifies the minimum requirements for the
27、material, design, construction and workmanship, manufacturing processes, examinations, and tests at manufacture of refillable seamless stainless steel gas cylinders of water capacities from 0,5 l up to and including 150 l for compressed, liquefied, and dissolved gases. This part of ISO 9809 is appli
28、cable to cylinders with a maximum actual tensile strength, Rma, of less than 1 100 MPa.NOTE If so desired, cylinders of water capacity less than 0,5 l and between 150 l and 500 l can be manufactured to be in full compliance with this part of ISO 9809.2 Normative referencesThe following documents, in
29、 whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 148-1, Metallic materials Charp
30、y pendulum impact test Part 1: Test methodISO 3651-2, Determination of resistance to intergranular corrosion of stainless steels Part 2: Ferritic, austenitic and ferritic-austenitic (duplex) stainless steels Corrosion test in media containing sulfuric acidISO 6506-1, Metallic materials Brinell hardn
31、ess test Part 1: Test methodISO 6508-1, Metallic materials Rockwell hardness test Part 1: Test methodISO 7438, Metallic materials Bend testISO 9329-1, Seamless steel tubes for pressure purposes Technical delivery conditions Part 1: Unalloyed steels with specified room temperature propertiesISO 9712,
32、 Non-destructive testing Qualification and certification of NDT personnelISO 13769, Gas cylinders Stamp marking3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.3.1yield strengthstress value corresponding to the 0,2 % proof stress or for austenitic s
33、teels in the solution-annealed condition, 1 % proof stressINTERNATIONAL STANDARD ISO 9809-4:2014(E) ISO 2014 All rights reserved 1BS ISO 9809-4:2014ISO 9809-4:2014(E)3.2quenchinghardening heat treatment in which a cylinder, which has been heated to a uniform temperature above the upper critical poin
34、t Ac3of the steel, is cooled rapidly in a suitable medium3.3temperingtoughening heat treatment which follows quenching, in which the cylinder is heated to a uniform temperature below the lower critical point Ac1of the steel3.4solution annealingsoftening heat treatment for austenitic and duplex stain
35、less steels in which a cylinder is heated to a uniform temperature above the upper critical point (Ac3, as defined in ISO 10052) of the steel followed by rapid cooling3.5cryoformingprocess where the cylinder is subjected to a controlled low-temperature deformation treatment that results in a permane
36、nt increase in strength3.6batchquantity of up to 200 cylinders plus cylinders for destructive testing of the same nominal diameter, thickness, length, and design made successively on the same equipment, from the same cast of steel, and subjected to the same heat treatment for the same duration of ti
37、me3.7test pressurephrequired pressure applied during a pressure testNote 1 to entry: It is used for the cylinder wall thickness calculation.3.8burst pressurepbhighest pressure reached in a cylinder during a burst test3.9design stress factorFratio of the equivalent wall stress at test pressure (ph) t
38、o guaranteed minimum yield strength (Reg)3.10working pressuresettled pressure of a compressed gas at a uniform reference temperature of 15 C in a full gas cylinder4 SymbolsA percentage elongation after the fracture for a gauge length of Loa calculated minimum thickness of the cylindrical shell, in m
39、illimetresa guaranteed minimum thickness of the cylindrical shell, in millimetresa1guaranteed minimum thickness of a concave base at the knuckle, in millimetres (see Figure 2)a2guaranteed minimum thickness at the centre of a concave base, in millimetres (see Figure 2)2 ISO 2014 All rights reservedBS
40、 ISO 9809-4:2014ISO 9809-4:2014(E)b guaranteed minimum thickness at the centre of a convex base, in millimetres (see Figure 1)c1maximum permissible deviation of burst profile for quenched and tempered cylinders, in millimetres (see Figure 11)c2maximum permissible deviation of the burst profile for c
41、ryoformed or solution-annealed cylinders with less than 7,5 mm wall thickness, in millimetres (see Figure 12)D nominal outside diameter of the cylinder, in millimetres (see Figure 1)Dfdiameter of former, in millimetres (see Figure 6)F design stress factor (variable) (see 3.7)H outside height of the
42、domed part (convex head or base end), in millimetres (see Figure 1)h outside depth (concave base end), in millimetres (see Figure 2)Looriginal gauge length as defined in ISO 6892, in millimetres (see Figure 5)l overall length of the cylinder, in millimetres (see Figure 3)n ratio of the diameter of t
43、he bend test former to the actual thickness of the test piece (t)pbmeasured burst pressure above the atmospheric pressure, in barNOTE 1 bar = 105Pa = 105N/m2.phhydraulic test pressure above the atmospheric pressure, in barpyobserved pressure when the cylinder starts yielding during the hydraulic bur
44、st test above the atmos-pheric pressure, in barr inside knuckle radius, in millimetres (see Figures 1 and 2)Reaactual value of the yield strength as determined by the tensile test, in MPa (see 10.2)Regminimum guaranteed value of the yield strength (see 7.1.1) for the finished cylinder, in MPaRmaactu
45、al value of the tensile strength as determined by the tensile test, in MPa (see 10.2)Rmgminimum guaranteed value of the tensile strength for the finished cylinder, in MPaSooriginal cross-sectional area of the tensile test piece in accordance with ISO 6892, in square millimetrest actual thickness of
46、the test specimen, in millimetrestmaverage cylinder wall thickness at the position of testing during the flattening test, in millimetresu ratio of the distance between the knife edges or platens in the flattening test to the average cylinder wall thickness at the position of the testV water capacity
47、 of the cylinder, in litresw width of the tensile test piece, in millimetres (see Figure 5)5 Inspection and testingTo ensure that the cylinders conform to this part of ISO 9809, they shall be subject to inspection and testing in accordance with Clauses 9, 10, and 11 by an inspection body (hereafter
48、referred to as “the inspector”) authorized to do so. ISO 2014 All rights reserved 3BS ISO 9809-4:2014ISO 9809-4:2014(E)Equipment used for the measurement, testing, and examination during the production shall be maintained and calibrated within a documented quality management system.NOTE Evaluation o
49、f conformity can be performed in accordance with the regulations recognized by the country(ies) where the cylinders are intended to be used.6 Materials6.1 General requirements6.1.1 Materials for the manufacture of gas cylinders shall fall within one of the following categories:a) internationally recognized cylinder steels;b) nationally recognized cylinder steels;c) new cylinder steels resulting from technical progress.For all categories, the relevant conditions specified in 6.2 and 6.3 shall be s
