1、Metallic powders - Determination of acid-insoluble content in iron, copper, tin and bronze powders (ISO 4496:2017)BS EN ISO 4496:2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 4496 August 2017 ICS 77.160 S
2、upersedes EN 24496:1993English Version Metallic powders - Determination of acid-insoluble content in iron, copper, tin and bronze powders (ISO 4496:2017)Poudres mtalliques - Dtermination de la teneur en insolubles dans les acides pour les poudres de fer, de cuivre, dtain et de bronze (ISO 4496:2017)
3、 Metallpulver - Bestimmung der sureunlslichen Bestandteile in Eisen-, Kupfer-, Zinn- und Bronzepulvern (ISO 4496:2017) This European Standard was approved by CEN on 7 August 2017. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
4、 European 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 ve
5、rsions (English, 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 Austri
6、a, Belgium, 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, Serbia, Slovakia, Slovenia, Spain,
7、 Sweden, Switzerland, 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 2017 CEN All rights of exploitation in any form and by any means reserved worldwide f
8、or CEN national Members. Ref. No. EN ISO 4496:2017 ENational forewordThis British Standard is the UK implementation of EN ISO 4496:2017. It is identical to ISO 4496:2017. It supersedes BS EN 24496:1993, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee I
9、SE/65, Sintered metal components.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 a contract. Users are responsible for its correct application. The British Standards Institu
10、tion 2017 Published by BSI Standards Limited 2017ISBN 978 0 580 90962 7ICS 77.160Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 September 2017.Amendments/cor
11、rigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN ISO 4496:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 4496 August 2017 ICS 77.160 Supersedes EN 24496:1993English Version Metallic powders - Determination of acid-insoluble content in iron, copper, tin and bronze
12、 powders (ISO 4496:2017)Poudres mtalliques - Dtermination de la teneur en insolubles dans les acides pour les poudres de fer, de cuivre, dtain et de bronze (ISO 4496:2017) Metallpulver - Bestimmung der sureunlslichen Bestandteile in Eisen-, Kupfer-, Zinn- und Bronzepulvern (ISO 4496:2017) This Europ
13、ean Standard was approved by CEN on 7 August 2017. 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 bibliographical references conc
14、erning 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 (English, French, German). A version in any other language made by translation under the responsibility of a CEN member in
15、to 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, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France,
16、Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHE
17、S KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 4496:2017 EBS EN ISO 4496:2017EN ISO 4496:2017 (E) 3 European foreword This document (EN
18、 ISO 4496:2017) has been prepared by Technical Committee ISO/TC 119 “Powder metallurgy“. 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 February 2018 and conflicting national standards shall be w
19、ithdrawn at the latest by February 2018. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 24496:1993. According to the
20、 CEN-CENELEC Internal Regulations, the national 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, Hu
21、ngary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 4496:2017 has been approved by CEN as EN ISO 4496:2017 witho
22、ut any modification. ISO 4496:2017(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body i
23、nterested 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 liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechn
24、ical 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 Directives, Part 1. In particular the different approval criteria needed for the different types of ISO do
25、cuments 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 that some of the elements of this document may be the subject of patent rights. ISO shall not be held resp
26、onsible 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 declarations received (see www .iso .org/ patents).Any trade name used in this document is information gi
27、ven for the convenience of users and does not constitute an endorsement.For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) princ
28、iples in the Technical Barriers to Trade (TBT) see the following URL: www .iso .org/ iso/ foreword .html.This document was prepared by Technical Committee ISO/ TC 119, Powder metallurgy, Subcommittee SC 2, Sampling and testing methods for powders (including powders for hardmetals).This second editio
29、n cancels and replaces the first edition (ISO 4496:1978), of which it constitutes a minor revision. The changes compared to the previous edition are as follows: “ashless grade (less than 0,01 % residual ash 1)” has been added in 6.3; general formatting of the structure.iv ISO 2017 All rights reserve
30、dBS EN ISO 4496:2017ISO 4496:2017(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body in
31、terested 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 liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechni
32、cal 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 Directives, Part 1. In particular the different approval criteria needed for the different types of ISO doc
33、uments 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 that some of the elements of this document may be the subject of patent rights. ISO shall not be held respo
34、nsible 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 declarations received (see www .iso .org/ patents).Any trade name used in this document is information giv
35、en for the convenience of users and does not constitute an endorsement.For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) princi
36、ples in the Technical Barriers to Trade (TBT) see the following URL: www .iso .org/ iso/ foreword .html.This document was prepared by Technical Committee ISO/ TC 119, Powder metallurgy, Subcommittee SC 2, Sampling and testing methods for powders (including powders for hardmetals).This second edition
37、 cancels and replaces the first edition (ISO 4496:1978), of which it constitutes a minor revision. The changes compared to the previous edition are as follows: “ashless grade (less than 0,01 % residual ash 1)” has been added in 6.3; general formatting of the structure.iv ISO 2017 All rights reserved
38、BS EN ISO 4496:2017INTERNATIONAL STANDARD ISO 4496:2017(E)Metallic powders Determination of acid-insoluble content in iron, copper, tin and bronze powders1 ScopeThis document specifies methods for determining, in iron, copper, tin and bronze powders, the approximate content of non-metallic materials
39、 which are insoluble in the ordinary mineral acids.The insoluble matter referred to is generally considered to be acid-insoluble silica and silicates, carbides, alumina, clays or other refractory oxides which are either present in the raw material from which the powders are manufactured or introduce
40、d during the manufacturing process.2 Normative referencesThere are no normative references in this document.3 Terms and definitionsNo terms and definitions are listed in this document.ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedi
41、a: available at h t t p :/ www .electropedia .org/ ISO Online browsing platform: available at h t t p :/ www .iso .org/ obp4 Field of applicationThe methods are applicable to lubricant-free metallic powders of iron, copper, tin, alloy bronze and elemental mixtures of copper and tin.5 ReagentsDuring
42、the analysis, use only reagents of recognized analytical grade, and only distilled water or water of equivalent purity. See Table 1 for the required reagents. ISO 2017 All rights reserved 1BS EN ISO 4496:2017INTERNATIONAL STANDARD ISO 4496:2017(E)Metallic powders Determination of acid-insoluble cont
43、ent in iron, copper, tin and bronze powders1 ScopeThis document specifies methods for determining, in iron, copper, tin and bronze powders, the approximate content of non-metallic materials which are insoluble in the ordinary mineral acids.The insoluble matter referred to is generally considered to
44、be acid-insoluble silica and silicates, carbides, alumina, clays or other refractory oxides which are either present in the raw material from which the powders are manufactured or introduced during the manufacturing process.2 Normative referencesThere are no normative references in this document.3 T
45、erms and definitionsNo terms and definitions are listed in this document.ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia: available at h t t p :/ www .electropedia .org/ ISO Online browsing platform: available at h t t p :/ www .i
46、so .org/ obp4 Field of applicationThe methods are applicable to lubricant-free metallic powders of iron, copper, tin, alloy bronze and elemental mixtures of copper and tin.5 ReagentsDuring the analysis, use only reagents of recognized analytical grade, and only distilled water or water of equivalent
47、 purity. See Table 1 for the required reagents. ISO 2017 All rights reserved 1 ISO 4496:2017(E)Table 1 Required reagentsType of powder ReagentDensity, g/mlConcentration of solutionIronHydrochloric acid (5.1) 1,19 1 + 1Hydrochloric acid (5.2) 1,19 1 + 25Potassium thiocyanate (5.3) 5 %Nitric acid (5.4
48、) 1,42 concentratedCopperTinBronzeHydrochloric acid (5.5) 1,19 concentratedNitric acid (5.6) 1,42 1 + 1Hydrogen peroxide (5.7) 30 %Ammonium acetate (5.8) 200 g/lCopperBronzeSodium diethyldithiocarbamate (5.9) 4 %TinSodium sulfide (5.10)Hydrogen sulfide (5.11) 6 EquipmentOrdinary laboratory equipment
49、 and the following.6.1 Laboratory balance, of sufficient capacity and capable of weighing to an accuracy of 0,000 1 g.6.2 Glass filter funnel, diameter approximately 70 mm.6.3 Filter paper, ashless grade (less than 0,01 % residual ash 1) for medium precipitates, diameter approximately 110 mm.6.4 Furnace, capable of operating between 900 C and 1 000 C.6.5 Fused silica or porcelain crucibles, pre-treated to constant mass at 900 C to 1 000 C and stored in a desiccator.7 Sampling7.1 Number of test portionsDet
