1、BS EN ISO2081:2008ICS 25.220.40NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDMetallic and otherinorganic coatings Electroplatedcoatings of zincwith supplementarytreatments on iron orsteel (ISO 2081:2008)This British Standardwas published under theauthority of
2、the StandardsPolicy and StrategyCommittee on 31 March2009 BSI 2009ISBN 978 0 580 54105 6Amendments/corrigenda issued since publicationDate CommentsBS EN ISO 2081:2008National forewordThis British Standard is the UK implementation of EN ISO 2081:2008. Itsupersedes BS EN 12329:2000 which is withdrawn.
3、The UK participation in its preparation was entrusted to TechnicalCommittee STI/33, Earth moving machinery (International).A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a co
4、ntract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 2081December 2008ICS 25.220.40 Supersedes EN 12329:2000 English VersionMetallic and other inorganic coatings
5、 - Electroplated coatings ofzinc with supplementary treatments on iron or steel (ISO2081:2008)Revtements mtalliques et autres revtementsinorganiques - Dpts lectrolytiques de zinc avectraitements supplmentaires sur fer ou acier (ISO2081:2008)Metallische berzge - Galvanische Zinkberzge aufEisenwerksto
6、ffen mit zustzlicher Behandlung (ISO2081:2008)This European Standard was approved by CEN on 19 November 2008.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alterat
7、ion. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN 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 translat
8、ionunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Gree
9、ce, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Ce
10、ntre: Avenue Marnix 17, B-1000 Brussels 2008 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 2081:2008: EBS EN ISO 2081:2008EN ISO 2081:2008 (E) 3 Foreword This document (EN ISO 2081:2008) has been prepared by Technical Committee
11、 ISO/TC 107 “Metallic and other inorganic coatings“ in collaboration with Technical Committee CEN/TC 262 “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 te
12、xt or by endorsement, at the latest by June 2009, and conflicting national standards shall be withdrawn at the latest by June 2009. 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 f
13、or identifying any or all such patent rights. This document supersedes EN 12329:2000. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic,
14、Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 2081:2008 has been app
15、roved by CEN as a EN ISO 2081:2008 without any modification. BS EN ISO 2081:2008ISO 2081:2008(E) ISO 2008 All rights reserved iiiContents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references . 1 3 Terms, definitions, abbreviated terms and symbols. 2 3.1 Terms and definitions. 2 3.2 Abb
16、reviated terms 2 3.3 Symbols . 3 4 Information to be supplied by the purchaser to the electroplater. 3 4.1 Essential information . 3 4.2 Additional information 3 5 Designation . 4 5.1 General. 4 5.2 Designation specification 4 5.3 Designation of the basis material . 5 5.4 Designation of heat treatme
17、nt requirements . 5 5.5 Examples . 5 6 Requirements 6 6.1 Appearance . 6 6.2 Thickness 6 6.3 Conversion coatings and other supplementary treatments. 6 6.4 Adhesion of zinc and chromate coatings. 7 6.5 Accelerated corrosion testing . 7 6.6 Stress relief heat treatments before cleaning and metal depos
18、ition 9 6.7 Hydrogen-embrittlement-relief heat treatments after electroplating. 9 7 Sampling 9 Annex A (normative) Designation of chromate conversion coatings and other supplementary treatments . 10 Annex B (normative) Measurement of average thickness of coating on small articles . 12 Annex C (infor
19、mative) Additional information on corrosion resistance, rinsing and drying, processing parts in bulk and dyeing of chromate conversion coatings 13 Bibliography . 15 BS EN ISO 2081:2008ISO 2081:2008(E) iv ISO 2008 All rights reservedForeword ISO (the International Organization for Standardization) is
20、 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 interested in a subject for which a technical committee has been established has the right to be represen
21、ted 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 Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are dr
22、afted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International S
23、tandard requires approval by at least 75 % of the member bodies casting a vote. 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. ISO 2081 was prepared
24、 by Technical Committee ISO/TC 107, Metallic and other inorganic coatings, Subcommittee SC 3, Electrodeposited coatings and related finishes. This third edition cancels and replaces the second edition (ISO 2081:1986), which has been technically revised. BS EN ISO 2081:2008ISO 2081:2008(E) ISO 2008 A
25、ll rights reserved vIntroduction Zinc coatings are applied to iron or steel articles for protective and decorative purposes by electrodeposition from acid zinc chloride, alkaline non-cyanide zinc, and alkaline zinc cyanide solutions. Electroplated, bright zinc coatings are popular and the processes
26、for preparing bright zinc coatings are widely used. The ability of a zinc coating to prevent corrosion is a function of its thickness and the type of service conditions to which it is exposed. For example, the rate of corrosion of zinc will generally be greater in industrial exposures than in rural
27、ones. The type of service condition should, therefore, be taken into consideration when specifying the minimum coating thickness. Chromate conversion coatings and other supplementary treatments enhance the corrosion resistance of electrodeposited zinc coatings and are commonly applied after electrop
28、lating. Because the appearance and serviceability of zinc coatings depends on the surface condition of the basis metal, agreement should be reached between the interested parties that the surface finish of the basis metal is satisfactory for electroplating. Chromate conversion coatings are omitted,
29、or replaced by other conversion coatings, at the specific request of the purchaser. This International Standard provides the codes for all types of chromate conversion and other supplementary coatings. Chemical conversion coatings that do not contain hexavalent chromium or are chromium-free, conform
30、ing to this International Standard, are commercially available. The appearance of these substitutes may be different from those produced with hexavalent chromium. All forms of chromate conversion coatings, alternative conversion coatings or substitutes, with the exception of phosphate coatings, can
31、be used and are required to satisfy the corrosion requirements given in this International Standard. Standard designations for metals and alloys can be found in References 6 to 10 in the Bibliography. BS EN ISO 2081:2008BS EN ISO 2081:2008INTERNATIONAL STANDARD ISO 2081:2008(E) ISO 2008 All rights r
32、eserved 1Metallic and other inorganic coatings Electroplated coatings of zinc with supplementary treatments on iron or steel WARNING This International Standard may not be compliant with some countries health, safety and environmental legislations and calls for the use of substances and/or procedure
33、s 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 producers, purchasers and/or user of this Internatio
34、nal Standard to establish appropriate health, safety and environmentally acceptable practices and take appropriate actions to comply with any national, regional and/or international rules and regulations. Compliance with this International Standard does not, of itself, confer immunity from legal obl
35、igations. 1 Scope This International Standard specifies requirements for electroplated coatings of zinc with supplementary treatments on iron or steel. It includes information to be supplied by the purchaser to the electroplater, and the requirements for heat treatment before and after electroplatin
36、g. It is not applicable to zinc coatings applied to sheet, strip or wire in the non-fabricated form, to close-coiled springs, or for purposes other than protective or decorative. This International Standard does not specify requirements for the surface condition of the basis metal prior to electropl
37、ating with zinc. However, defects in the surface of the basis metal can adversely affect the appearance and performance of the coating. The coating thickness that can be applied to threaded components can be limited by dimensional requirements, including class or fit. 2 Normative references The foll
38、owing 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, Metallic and oxide coatings Measurement of coat
39、ing 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 Vocabulary ISO 2177, Metallic coatings Measu
40、rement of coating thickness Coulometric method by anodic dissolution BS EN ISO 2081:2008ISO 2081:2008(E) 2 ISO 2008 All rights reservedISO 2178, Non-magnetic coatings on magnetic substrates Measurement of coating thickness Magnetic method ISO 2819, Metallic coatings on metallic substrates Electrodep
41、osited and chemically deposited coatings Review of methods available for testing adhesion ISO 3497, Metallic coatings Measurement of coating thickness X-ray spectrometric methods ISO 3543, Metallic and non-metallic coatings Measurement of thickness Beta backscatter method ISO 3613, Chromate conversi
42、on coatings on zinc, cadmium, aluminium-zinc alloys and zinc-aluminium alloys Test methods ISO 3892, Conversion coatings on metallic materials Determination of coating mass per unit area Gravimetric methods ISO 4518, Metallic coatings Measurement of coating thickness Profilometric method ISO 4519, E
43、lectrodeposited metallic coatings and related finishes Sampling procedures for inspection by attributes ISO 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 o
44、f iron or steel to reduce the risk of hydrogen embrittlement ISO 10289, Methods for corrosion testing of metallic 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
45、for residual embrittlement in both metallic-coated and uncoated externally-threaded articles and rods Inclined wedge method ISO 15724, Metallic and other inorganic coatings Electrochemical measurement of diffusible hydrogen in steels Barnacle electrode method ASTM B117, Standard Practice for Operati
46、ng Salt Spray (Fog) Apparatus 3 Terms, definitions, abbreviated terms and symbols 3.1 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 2064 and ISO 2080 apply. 3.2 Abbreviated terms C iridescent conversion coating D opaque chromate conversion coating ER
47、 hydrogen embrittlement relief heat treatment NM non-metallic materials PL plateable plastics materials SR stress relief heat treatment T2 organic sealant BS EN ISO 2081:2008ISO 2081:2008(E) ISO 2008 All rights reserved 33.3 Symbols Al chemical symbol for aluminium Cu chemical symbol for copper Fe c
48、hemical symbol for iron Zn chemical symbol for zinc 4 Information to be supplied by the purchaser to the electroplater 4.1 Essential information The following information shall be supplied to the electroplater in writing, for example, in the contract or purchase order, or on engineering drawings: a)
49、 the reference to this International Standard, ISO 2081, and the designation (see Clause 5); b) the significant surface indicated, for example, by drawings or by the provision of suitably marked samples; c) the nature, condition and finish of the basis metal if they are likely to affect the serviceability and/or appearance of the coating (see Clause 1); d) the position on the surface for unavoidable defects, such as rack marks (see 6.1); e) the finish required, for example, b
