1、BS EN ISO 17672:2016Brazing Filler metals (ISO17672:2016)BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN ISO 17672:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO 17672:2016. It supersedes BS EN ISO 17672:2010 whic
2、h iswithdrawn.The UK participation in its preparation was entrusted to Technical Committee WEE/19, Brazing and braze welding.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of
3、a contract. Users are responsible for its correct application. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 83296 3 ICS 25.160.50 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under
4、 the authority of the Standards Policy and Strategy Committee on 31 October 2016.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 17672 September 2016 ICS 25.160.50 Supersedes EN ISO 17672:2010English Version Brazing -
5、 Filler metals (ISO 17672:2016) Brasage fort - Mtaux dapport (ISO 17672:2016) Hartlten - Lote (ISO 17672:2016) This European Standard was approved by CEN on 29 July 2016. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
6、 Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (E
7、nglish, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgiu
8、m, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerl
9、and, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national M
10、embers. Ref. No. EN ISO 17672:2016 EBS EN ISO 17672:2016EN ISO 17672:2016 (E) 3 European foreword This document (EN ISO 17672:2016) has been prepared by Technical Committee ISO/TC 44 “Welding and allied processes“ in collaboration with Technical Committee CEN/TC 121 “Welding and allied processes” th
11、e secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by March 2017, and conflicting national standards shall be withdrawn at the latest by March 2017. Attention is d
12、rawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 17672:2010. According to the CEN-CENELEC Internal Regulations, the n
13、ational standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
14、Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 17672:2016 has been approved by CEN as EN ISO 17672:2016 without any modification. BS EN ISO 17672:2016ISO 1
15、7672:2016(E)Foreword iv1 Scope . 12 Normative references 13 Composition 14 Special vacuum requirement . 25 Chemical analysis . 26 Designation 37 Technical delivery conditions . 37.1 Types of product 37.2 Dimensions . 37.2.1 General 37.2.2 Foils . 37.2.3 Rods . 47.2.4 Wires 57.3 Condition 57.4 Markin
16、g . 57.5 Packaging . 57.6 Product certificates . 58 Metal hazards . 5Annex A (normative) Codification 16Bibliography .21 ISO 2016 All rights reserved iiiContents PageBS EN ISO 17672:2016ISO 17672:2016(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of nat
17、ional standards 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. Interna
18、tional organizations, 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 intend
19、ed for 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.i
20、so.org/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 wil
21、l be in 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 expressi
22、ons 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 informationThe committee responsible for this document is ISO/TC 44, Welding and allied processes.This seco
23、nd edition cancels and replaces the first edition (ISO 17672:2010), which has been technically revised.Requests for official interpretations of any aspect of this International Standard should be directed to the Secretariat of ISO/TC 44 via your national standards body. A complete listing of these b
24、odies can be found at www.iso.org.iv ISO 2016 All rights reservedBS EN ISO 17672:2016INTERNATIONAL STANDARD ISO 17672:2016(E)Brazing Filler metals1 ScopeThis International Standard specifies the compositional ranges of a series of filler metals used for brazing. The filler metals are divided into se
25、ven classes, related to their composition, but not necessarily to the major element present.NOTE 1 For the major element(s) present, see Annex A.In the case of composite products, such as flux-coated rods, pastes or plastics tapes, this International Standard covers only the filler metal that forms
26、parts of such products. The melting temperatures given in the tables are only approximate, as they necessarily vary within the compositional range of the filler metal. Therefore, they are given only for information. Technical delivery conditions are given for brazing filler metals and products conta
27、ining brazing filler metals with other constituents such as flux and/or binders.NOTE 2 For some applications, e.g. precious metal jewellery, aerospace and dental, filler metals other than those included in this International Standard are often used and these are covered by other International Standa
28、rds to which reference can be made.2 Normative referencesThe following documents, in 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 refere
29、nced document (including any amendments) applies.ISO 3677, Filler metal for soft soldering and braze welding DesignationISO 80000-1:2009, Quantities and units Part 1: General3 CompositionThe filler metal shall have a composition in accordance with Tables 5 to 13 for the particular type, except as mo
30、dified for special vacuum requirements (see Clause 4 and Table 1).If the values for an element range from 0 () to a defined value, the element may be, but does not have to be, in that brazing filler metal.For the purposes of determining compliance with composition limits, any value obtained from the
31、 analysis shall be rounded to the same number of decimal places as used in this International Standard in expressing the specified limit. The following rules shall be used for rounding.a) When the figure immediately after the last figure to be retained is less than five, then the last figure to be r
32、etained shall be kept unchanged.b) When the figure immediately after the last figure to be retained is either1) greater than five, or2) equal to five and followed by at least one figure other than zero,the last figure to be retained shall be increased by one.c) When the figure immediately after the
33、last figure to be retained is equal to five, and followed by zeros only, then the last figure to be retained shall be left unchanged if even, and increased by one ISO 2016 All rights reserved 1BS EN ISO 17672:2016ISO 17672:2016(E)if odd. For the purposes of determining compliance with the requiremen
34、ts of this International Standard, the actual test values obtained shall be subjected to the rounding-off instructions given in ISO 80000-1:2009, Annex B.NOTE The chemical analysis is of the bulk material, but the material can be composed of discrete powders with different individual compositions or
35、 multiple layers of roll-clad foils where each layer can have a different individual composition.4 Special vacuum requirementIn a few instances, which are most likely to apply to Ag 272, Pd 287, Pd 387, Pd 388, Pd 481, Pd 483, Pd 484, Pd 587, Pd 647 and Au 295, Au 375, Au 625, Au 752, Au 801 and Au
36、827, lower impurity limits can be required for brazing in vacuum or service in vacuum and these limits shall be as given in Table 1.Filler metals complying with Table 1 shall have the letter V added as a suffix to the codification plus the digit 1 or 2 to indicate the grade.NOTE Grade 1 is intended
37、for the most demanding duties, Grade 2 for less demanding.Table 1 Impurity limits for special vacuum requirementsImpurityLimit % by mass max.Grade 1 Grade 2Ca0,005 0,005Cd 0,001 0,002P 0,002 0,002bPb 0,002 0,002Zn 0,001 0,002Mnc0,001 0,002Inc0,002 0,003All other elements where vapour pressure at 500
38、 C is 1,3 105Pad0,001 0,002aFor filler metal Ag 272 (see Table 6), lower levels may be available by agreement between the purchaser and the supplier.bFor filler metal Ag 272, 0,02 % maximum.cExcept where otherwise specified in Tables 5 to 13.dExamples of such elements are Ca, Cs, K, Li, Mg, Na, Rb,
39、S, Sb, Se, Sr, Te and Tl. For such elements (including Cd, Pb and Zn), the total is limited to 0,010 %.5 Chemical analysisChemical analyses shall be carried out by any suitable method, but it should be noted that in the case of many brazing alloys, the use of reference standards may be essential, as
40、 agreed between the purchaser and the supplier. Analysis is only required to be carried out routinely for those elements for which specific limits are shown. If, however, the presence of other elements is suspected or in the course of routine analysis is indicated to be in excess of the limits laid
41、down for unnamed elements, or would bring the total of impurities above the specified limit, further analyses shall be carried out for such elements.2 ISO 2016 All rights reservedBS EN ISO 17672:2016ISO 17672:2016(E)6 DesignationThe filler metal shall be designated by the description “filler metal,”
42、 reference to this International Standard (i.e. ISO 17672) and a code. Details of the two options for the code system used are given in Annex A.As an example, the designations of an aluminium filler metal containing 11 % to 13 % Si, in accordance with this International Standard, can be made in one
43、of the following ways:EXAMPLE 1 Filler metal ISO 17672-Al 112where“Filler metal” is the description;“ISO 17672” is the reference to this International Standard;“Al 112” is the short code given in Tables 5 to 13.EXAMPLE 2 Filler metal ISO 17672-B-Al88Si-575/585where“Filler metal” is the description;“
44、ISO 17672” is the reference to this International Standard;“B” denotes brazing;“Al88Si-575/585” is the code in accordance with ISO 3677.7 Technical delivery conditions7.1 Types of productThe form of the material shall be agreed between the purchaser and the manufacturer/supplier at the time of placi
45、ng the order.NOTE Brazing filler metals are available as rod, wire, foil (or preforms made from them) or powder, although not all filler metals are necessarily available in every type of product. They are also available as a constituent of brazing pastes or, particularly in the case of aluminium bra
46、zing filler metals, clad onto one or both sides of an alloy sheet. Rods can be completely or partially coated with flux.7.2 Dimensions7.2.1 GeneralDimensions and tolerances for foils (see 7.2.2), rods (see 7.2.3) and, to a lesser extent, wires (see 7.2.4) are defined. For other forms and dimensions
47、not listed in the respective tables, the purchaser and the manufacturer/supplier shall agree on the dimensions and tolerances at the time of placing the order.7.2.2 FoilsThe tolerances for thickness, width and camber are given in Tables 2, 3 and 4. ISO 2016 All rights reserved 3BS EN ISO 17672:2016I
48、SO 17672:2016(E)Table 2 Thickness tolerance for foilsThicknessnominal sizemmLimits of thicknessrelated to width over 1 mm (nominal size)over to 0,05 10 %0,05 0,1 0,005 mm0,1 0,2 0,010 mm0,2 0,3 0,015 mm0,3 0,4 0,018 mm0,4 0,5 0,020 mm0,5 0,8 0,025 mm0,8 1,2 0,030 mm1,2 2,0 0,035 mmTable 3 Width tole
49、rance for foilsThicknessnominal sizemmLimits of widthrelated to width (nominal size)mmover to to 50 mmover 50 mm to 100 mmover 100 mm 0,1+020, +030, +040,0,1 1,0+020, +030, +040,1,0 2,0+030, +040, +050,Table 4 Camber tolerance for foilsThicknessnominal sizemmMax. camber for widthnominal sizemm/mover tofrom 3 mm to 10 mmover 10 mm to 15 mmover 15 mm to 30 mmover 30 mm to 50 mmover 50 mm 0,5 10 7 4 3 30,5 2,0 15 10 6 4 47.2.3 RodsFor rods, the preferred diameters are 1 mm, 1,5 mm, 2 mm, 2,5 mm, 3 mm and 5 mm and the preferred l
