1、June 2011 Translation by DIN-Sprachendienst.English price group 11No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 2
2、5.220.40!$r+f“1790867www.din.deDDIN EN ISO 26945Metallic and other inorganic coatings Electrodeposited coatings of tin-cobalt alloy (ISO 26945:2011)English translation of DIN EN ISO 26945:2011-06Metallische und andere anorganische berzge Galvanische berzge aus Zinn-Cobalt-Legierungen (ISO 26945:2011
3、)Englische bersetzung von DIN EN ISO 26945:2011-06Revtements mtalliques et autres revtements inorganiques Dpts lectrolytiques dalliage tain-cobalt (ISO 26945:2011)Traduction anglaise de DIN EN ISO 26945:2011-06SupersedesDIN EN ISO 26945:2009-05www.beuth.deDocument comprises pagesIn case of doubt, th
4、e German-language original shall be considered authoritative.1805.11 DIN EN ISO 26945:2011-06 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee ISO/TC 107 “Metallic and other inorganic coatings” (Secretariat: KATS, Republic of Korea) in
5、 collaboration with Technical Committee CEN/TC 262 “Metallic and other inorganic coatings” (Secretariat: BSI, United Kingdom) within the scope of the Agreement on technical cooperation between ISO and CEN (Vienna Agreement). The responsible German body involved in its preparation was the Normenaussc
6、huss Materialprfung (Materials Testing Standards Committee), Working Committee NA 062-01-76 AA Galvanische berzge. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 1456 E DIN EN ISO 1456 ISO 1463 DIN EN ISO 1463 ISO 2064 DIN EN ISO 2064
7、ISO 2080 E DIN EN ISO 2080 ISO 2819 DIN EN ISO 2819 ISO 2859 (all parts) DIN ISO 2859 (all parts) ISO 3497 DIN EN ISO 3497 ISO 4541 DIN EN ISO 4541 ISO 9220 DIN EN ISO 9220 ISO 9227 DIN EN ISO 9227 ISO 10289 DIN EN ISO 10289 Amendments This standard differs from DIN EN ISO 26945:2009-05 as follows:
8、a) normative references to ASTM B117 and ASTM B368 have been deleted, instead, informative references to ASTM B117, ASTM B368 and ISO 9227 relating to the salt spray test have been included; b) the standard has been editorially revised. Previous editions DIN EN ISO 26945: 2009-05 DIN EN ISO 26945:20
9、11-06 3 National Annex NA (informative) Bibliography DIN EN ISO 1456, Metallic and other inorganic coatings Electrodeposited coatings of nickel, nickel plus chromium and of copper plus nickel plus chromium DIN EN ISO 1463, Metallic and oxide coatings Measurement of coating thickness Microscopical me
10、thod DIN EN ISO 2064, Metallic and other inorganic coatings Definitions and conventions concerning the measurement of thickness DIN EN ISO 2080, Metallic and other inorganic coatings Surface treatment, metallic and other inorganic coatings Vocabulary DIN EN ISO 2819, Electrodeposited and chemically
11、deposited coatings on metallic substrates Review of methods available for testing adhesion DIN EN ISO 3497, Metallic coatings Measurement of coating thickness X-ray spectrometric methods DIN EN ISO 4541, Metallic and other non-organic coatings Corrodkote corrosion test (CORR test) DIN EN ISO 9220, M
12、etallic coatings Measurement of coating thickness with the scanning electron microscope method DIN EN ISO 9227, Corrosion tests in artificial atmospheres Salt spray tests DIN EN ISO 10289, Methods for corrosion testing of metallic and other inorganic coatings on metallic substrates Rating of test sp
13、ecimens and manufactured articles subjected to corrosion tests DIN ISO 2859 (all parts), Sampling procedures for inspection by attributes DIN EN ISO 26945:2011-06 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 26945 February 2011 ICS 25.220.40 Supersedes
14、EN ISO 26945:2008English Version Metallic and other inorganic coatings Electrodeposited coatings of tin-cobalt alloy (ISO 26945:2011) Revtements mtalliques et autres revtements Metallische und andere anorganische berzge Galvanische berzge aus Zinn-Cobalt-Legierungen (ISO 26945:2011) This European St
15、andard was approved by CEN on 8 February 2011. 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 concerni
16、ng 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 into i
17、ts 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, France, Germany, Greece, Hungary, Iceland, Ireland,
18、 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: Avenue Marnix 17, B
19、-1000 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 26945:2011: Einorganiques Dpts lectrolytiques dalliage tain-cobalt (ISO 26945:2011) Contents Page Foreword3 Introduction .4 1 Scope 5 2 Normative references 5
20、3 Terms and definitions .6 4 Essential information to be supplied by the purchaser to the processor .6 5 Designation 7 5.1 General7 5.2 Designation specification .7 5.3 Basis metal .7 5.4 Designation of heat treatment requirements 8 5.5 Examples 8 6 Requirements.8 6.1 Basis material.8 6.2 Appearance
21、 9 6.3 Undercoats .9 6.4 Thickness .9 6.5 Adhesion.10 6.6 Quality-evaluation test of tin-cobalt alloy coatings .10 6.7 Stress-relief heat treatment prior to electroplating11 6.8 Hydrogen-embrittlement-relief heat treatment after electroplating11 7 Sampling.11 Annex A (normative) Methods of measuring
22、 the thickness of tin-cobalt alloy coatings 12 Bibliography 14 DIN EN ISO 26945:2011-06 EN ISO 26945:2011 (E) 2 Foreword This document (EN ISO 26945:2011) has been prepared by Technical Committee ISO/TC 107 “Metallic and other inorganic coatings” in collaboration with Technical Committee CEN/TC 262
23、“Metallic and other inorganic coatings” the secretariat of which is held by BSI. 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 August 2011, and conflicting national standards shall be withdrawn
24、at the latest by August 2011. 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 not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 26945:2008. According to
25、 the 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Lat
26、via, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 26945:2011 has been approved by CEN as a EN ISO 26945:2011 without any modification. DIN EN ISO 26945:2011-06 E
27、N ISO 26945:2011 (E) 3 Introduction Electrodeposited coating of tin-cobalt alloy is characterized by its bright surface which is similar to decorative chromium coating. Hardness and wear-resistance properties of tin-cobalt alloy coatings are not equivalent to those of chromium coatings, but are simi
28、lar to those of tin-nickel alloy coatings (see ISO 2179). Thus, tin-cobalt coatings may be regarded, as far as surface lustre is concerned, as one of the possible alternatives to chromium coating. Due to its higher current efficiency (more than 70 %), tin-cobalt alloy coatings can be applied by rack
29、-and-barrel plating processes to a wide range of complicated shapes and sizes, e.g. nuts, bolts, rivets, etc. DIN EN ISO 26945:2011-06 EN ISO 26945:2011 (E) 4 WARNING This International Standard may not be compliant with some countries health and safety legislations and calls for the use of substanc
30、es and/or procedures that may be injurious to health if adequate safety measures are not taken. This International Standard does not address any health hazards, safety or environmental matters and legislations associated with its use. It is the responsibility of the user of this International Standa
31、rd to establish appropriate health, safety and environmentally acceptable practices and take suitable actions to comply with any national and international regulations. Compliance with this International Standard does not in itself confer immunity from legal obligations. 1 Scope This International S
32、tandard specifies electrodeposited coatings of tin-cobalt alloy of approximate composition 75 % (mass fraction) to 80 % (mass fraction) tin, remainder cobalt, as a substitute for decorative chromium coatings of 0,1 m to 0,3 m thickness. Hardness and wear resistance properties of the coatings obtaine
33、d are not equivalent to those of chromium coatings, but similar to those of tin-nickel alloy coatings. Tin-cobalt alloy coatings can be applied by rack or barrel plating processes. This International Standard does not specify requirements for the surface condition of the basis metal prior to electro
34、plating. 2 Normative references The following referenced documents are indispensable 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. ISO 1463, Metalli
35、c and oxide coatings Measurement of coating thickness Microscopical method ISO 2064, Metallic and other inorganic coatings Definitions and conventions concerning the measurement of thickness ISO 2080, Metallic and other inorganic coatings Surface treatment, metallic and other inorganic coatings Voca
36、bulary ISO 2819, Metallic coatings on metallic substrates Electrodeposited and chemically deposited coatings Review of methods available for testing adhesion ISO 3497, Metallic coatings Measurement of coating thickness X-ray spectrometric methods ISO 4519, Electrodeposited metallic coatings and rela
37、ted finishes Sampling procedures for inspection by attributes ISO 4541, Metallic and other non-organic coatings Corrodkote corrosion test (CORR test) ISO 9220, Metallic coatings Measurement of coating thickness Scanning electron microscope method DIN EN ISO 26945:2011-06 EN ISO 26945:2011 (E) 5 ISO
38、9587, Metallic and other inorganic coatings Pretreatment of iron or steel to reduce the risk of hydrogen embrittlement ISO 9588, Metallic and other inorganic coatings Post-coating treatments of iron or steel to reduce the risk of hydrogen embrittlement ISO 10289, Methods for corrosion testing of met
39、allic and other inorganic coatings on metallic substrates Rating of test specimens and manufactured articles subjected to corrosion tests ISO 10587, Metallic and other inorganic coatings Test for residual embrittlement in both metallic-coated and uncoated externally-threaded articles and rods Inclin
40、ed wedge method ISO 15724, Metallic and other inorganic coatings Electrochemical measurement of diffusible hydrogen in steels Barnacle electrode method 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 2064, ISO 2080, ISO 9587 and ISO 9588 apply. 4 Ess
41、ential information to be supplied by the purchaser to the processor When ordering articles to be processed in accordance with this International Standard, the purchaser shall provide the following information in writing, in, for example, the contract, purchase order, or on the engineering drawing: a
42、) the number of this International Standard, ISO 26945, and article designation; b) the nature, condition and finish of the basis metal if they are likely to affect the serviceability and/or appearance of the coating (see 6.1); c) the significant surface of the article to be electroplated, indicated
43、, for example, by drawings or by the provision of suitably marked samples; d) additional part of surfaces where the minimum thickness requirements apply; e) positions where unavoidable contact marks and other defects are acceptable (see 6.2); f) any requirements for special pretreatment (see 6.1); g
44、) tensile strength of parts and requirements for heat treatment before and/or after electrodeposition (see 6.7 and 6.8); h) requirements, nature and thickness of undercoats (see 6.1 and 6.3); i) requirements for thickness, quality-evaluation test for controlling the quality and continuity of the coa
45、ting and test method(s) to be used, and adhesion testing (see 6.4, 6.5 and 6.6); j) finish required, e.g. bright, dull or another type, accompanied by approved samples of the finish (see 6.2); k) the sampling plan to be adopted, and the acceptance levels (see Clause 7); l) any additional essential i
46、nformation. DIN EN ISO 26945:2011-06 EN ISO 26945:2011 (E) 6 5 Designation 5.1 General The designation shall appear on engineering drawings, in the purchase order, the contract or in the detailed product specification. The designation specifies, in the following order, the basis metal, the specific
47、alloy (optional), stress-relief requirements, the type and thickness of undercoats (when present), the thickness and composition of alloy coating or coatings (when double or multilayer coatings are specified), and supplementary treatments, such as heat treatment to reduce susceptibility to hydrogen
48、embrittlement. 5.2 Designation specification The designation shall comprise the following: a) the term “Electrodeposited coating”; b) the number of this International Standard, ISO 26945; c) a hyphen; d) the chemical symbol of the basis metal (see 5.3), e.g. Fe (iron or steel), followed by a solidus
49、 (/); e) the chemical symbol of the undercoat, e.g. Cu (copper) or Ni (nickel); f) stress-relief (SR) designation (see 5.4); g) a solidus (/); h) the chemical symbol(s) for the metal or alloy or coating(s); i) a number indicating the minimum local thickness, in micrometres, of the coating(s) followed by a solidus (/); j) hydrogen-embrittlement-relief (ER) designation (see 5.4); k) if appropriate, codes indicating the type of any supplementary coating, followed
