1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Anodizing of aluminium and its alloys Assessment of quality of sealed anodic oxidation coatings by measurement of the loss of mass after immersion in acid solution(s)BS EN ISO 3210:2017National forewordThis British Stan
2、dard is the UK implementation of EN ISO 3210:2017. It is identical to ISO 3210:2017. It supersedes BS EN ISO 3210:2010, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee STI/33, Electrodeposited and related coatings.A list of organizations represented on
3、 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 Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 89065 9
4、ICS 25.220.20Compliance 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 31 January 2018.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS E
5、N ISO 3210:2017EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 3210December 2017ICS 25.220.20 Supersedes EN ISO 3210:2010EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGCEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN R
6、ef. No. EN ISO 3210:2017: EAll rights of exploitation in any form and by any means reserved worldwide for CEN national MembersAnodizing of aluminium and its alloys - Assessment of quality of sealed anodic oxidation coatings by measurement of the loss of mass after immersion in acid solution(s) (ISO
7、3210:2017)Anodisation de laluminium et de ses alliages - valuation de la qualit des couches anodiques colmates par mesurage de la perte de masse aprs immersion en solution(s) acide(s) (ISO 3210:2017)Anodisieren von Aluminium und Aluminiumlegierungen - Prfung der Qualitt von verdichteten, anodisch er
8、zeugten Oxidschichten durch Bestimmung des Masseverlustes nach Eintauchen in Sure-Lsung(en) (ISO 3210:2017)This European Standard was approved by CEN on 22 October 2017.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European S
9、tandard 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 (Engl
10、ish, 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, Belgium, B
11、ulgaria, 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, Sweden, Swit
12、zerland, Turkey and United Kingdom.English VersionEN ISO 3210:2017 (E)European forewordThis document (EN ISO 3210:2017) has been prepared by Technical Committee ISO/TC 79 “Light metals and their alloys” in collaboration with Technical Committee CEN/TC 132 “Aluminium and aluminium alloys” the secreta
13、riat of which is held by AFNOR.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 June 2018, and conflicting national standards shall be withdrawn at the latest by June 2018.Attention is drawn to the
14、 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 3210:2010.According to the CEN-CENELEC Internal Regulations, the national standards organizatio
15、ns 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, Lithuania, Luxembourg, Malta,
16、 Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.Endorsement noticeThe text of ISO 3210:2017 has been approved by CEN as EN ISO 3210:2017 without any modification.2BS EN ISO 3210:2017ISO 3210:2017(E)Foreword iv1 Sc
17、ope . 12 Normative references 13 Terms and definitions . 14 Principle 25 Reagents 25.1 General . 25.2 Predip solution, used only for Method 2 . 25.3 Test solution 25.3.1 Test solution A 25.3.2 Test solution B 26 Apparatus . 27 Preparation of test specimen 28 Procedure. 38.1 Test solutions . 38.2 Met
18、hod 1. 38.3 Method 2. 49 Expression of results 510 Test report . 5Annex A (normative) Method for the degreasing and drying of test specimens 6Bibliography 7 ISO 2017 All rights reserved iiiContents PageBS EN ISO 3210:2017ISO 3210:2017(E)ForewordISO (the International Organization for Standardization
19、) 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 interested in a subject for which a technical committee has been established has the right to be repr
20、esented 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. The procedures used to dev
21、elop 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 documents should be noted. This document was drafted in accordance with the editorial rules of the IS
22、O/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 responsible for identifying any or all such patent rights. Details of any patent rights identified during
23、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 given for the convenience of users and does not constitute an endorsement. For an explanation on the volunt
24、ary 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) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.This
25、 document was prepared by Technical Committee ISO/TC 79, Light metals and their alloys, Subcommittee SC 2, Organic and anodic oxidation coatings on aluminium.This fourth edition cancels and replaces the third edition (ISO 3210:2010), which has been technically revised.The main changes compared to th
26、e previous edition are as follows: the option of using a test solution that does not contain hexavalent chromium ions (test solution B) has been added; a new subclause pertaining to the use of test solution B has been included in the procedure.iv ISO 2017 All rights reservedBS EN ISO 3210:2017Anodiz
27、ing of aluminium and its alloys Assessment of quality of sealed anodic oxidation coatings by measurement of the loss of mass after immersion in acid solution(s)1 ScopeThis document specifies methods of assessing the quality of sealed anodic oxidation coatings on aluminium and its alloys by measureme
28、nt of the loss of mass after immersion in acid solution(s).It consists of the following two methods. Method 1: Assessment of quality of sealed anodic oxidation coatings by measurement of the loss of mass after immersion in a phosphoric acid based solution without prior acid treatment. Method 2: Asse
29、ssment of quality of sealed anodic oxidation coatings by measurement of the loss of mass after immersion in a phosphoric acid based solution with prior acid treatment.Method 1 is applicable to anodic oxidation coatings intended for decorative or protective purposes or where resistance to staining is
30、 important.Method 2 is applicable to anodic oxidation coatings intended for outdoor architectural purposes. For less severe applications, Method 1 can be more suitable.The methods are not applicable to the following: hard-type anodic oxidation coatings which normally are not sealed; anodic oxidation
31、 coatings that have been sealed only in dichromate solutions; anodic oxidation coatings produced in chromic acid solutions; anodic oxidation coatings that have undergone treatment to render them hydrophobic.NOTE 1 The methods assess the quality of hydrothermal sealing applied to anodized aluminium.
32、They can be appropriate for other sealing methods.NOTE 2 The methods are destructive and can serve as reference methods in case of doubt or dispute regarding the results of the test for loss of absorptive power (see ISO 2143) or the measurement of admittance (see ISO 2931).2 Normative referencesThe
33、following documents are referred to in the text in such a way that some or all of their content constitutes requirements 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.IS
34、O 7583, Anodizing of aluminium and its alloys Terms and definitions3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 7583 apply.INTERNATIONAL STANDARD ISO 3210:2017(E) ISO 2017 All rights reserved 1BS EN ISO 3210:2017ISO 3210:2017(E)ISO and IEC maintain
35、 terminological databases for use in standardization at the following addresses: ISO Online browsing platform: available at http:/www.iso.org/obp IEC Electropedia: available at http:/www.electropedia.org/ 4 PrincipleAn unsealed anodic oxidation coating on aluminium is dissolved rapidly by acid media
36、, whereas a well-sealed coating will withstand long immersion without appreciable attack.The methods are surface specific. They test the resistance of the surface of a sealed anodic oxidation coating to attack by certain acid solutions. They do not test the quality through the whole thickness of the
37、 coating.5 Reagents5.1 GeneralUse only reagents of recognized analytical grade and distilled water or deionized water.5.2 Predip solution, used only for Method 2Aqueous solution containing (470 15) g/l nitric acid.NOTE This solution can be obtained, for example, by diluting a 65 % nitric acid soluti
38、on (20= 1,40 g/ml) with an equal volume of water.5.3 Test solution5.3.1 Test solution AAqueous solution containing per litre, 35 ml of phosphoric acid (20= 1,7 g/ml) and 20 g of chromium(VI) oxide.WARNING Chromium(VI) is toxic and shall be handled properly. Chromium(VI) solutions are hazardous to th
39、e environment and severely hazardous to waters.5.3.2 Test solution BAqueous solution containing per litre, 35 ml of phosphoric acid (20= 1,7 g/ml).6 ApparatusUsual laboratory apparatus and glassware together with a laboratory balance with a readability of 0,1 mg.7 Preparation of test specimenCut a p
40、iece from the material to be tested, avoiding contact areas, such that there is an area of approximately 1 dm2, but not less than 0,5 dm2, of significant surface area. Normally, the mass of the test specimen should not exceed 200 g.For hollow extrusions, take the test specimen from the end of the se
41、ctions where the total (external plus internal) surface area has an anodic oxidation coating (due to the throwing power of the anodizing electrolyte).2 ISO 2017 All rights reservedBS EN ISO 3210:2017ISO 3210:2017(E)In special cases, such as certain types of jigging, small hollow sections, etc., it i
42、s necessary to remove the anodic oxidation coating from the inside surface and to carry out the test on the coating on the outer surface of the extrusion. If test solution A is used, the anodic oxidation coating may be removed from the inside by mechanical abrasion or by chemical dissolution. Otherw
43、ise, the inside surface may be masked.If by agreement between the anodizer and the customer, special test specimens are prepared, they shall be of the same alloy as the production components and processed through the anodizing line at the same time as the production components.8 Procedure8.1 Test so
44、lutionsTest solution A does not attack bare metal and it is not necessary to take uncoated surfaces into account.Test solution B attacks bare metal to a limited extent. However, it is not necessary to take uncoated surfaces into account if conditions a) and b) are both satisfied.a) Dissolution of an
45、 uncoated specimen of the metal does not exceed 10 mg/dm2over the operations 8.2.4 to 8.2.6 or 8.3.4 to 8.3.8 inclusive depending on the method being used.b) The uncoated surface area does not exceed 20 % of the total surface area if the uncoated surface was created by cutting or mechanical abrasion
46、 to remove the anodic oxidation coating or by chemical dissolution of the anodic oxidation coating.Where either condition is not satisfied, the uncoated surface may be masked using an adherent material that neither gains nor loses mass in excess of 1,0 mg/dm2over the operations 8.2.4 to 8.2.6 or 8.3
47、.4 to 8.3.8 inclusive depending on the method being used.The dissolution of an uncoated specimen of the metal may be determined by using an uncoated specimen of the same alloy as that of the test specimen. Empirical data indicate that the dissolution of each of the alloys AA 1050A, 1080A, 5005, 5005
48、A, 5657, 5754, 6060, 6063 and 6063A satisfies condition a).8.2 Method 18.2.1 Remove any sealing smut from the test specimen by rubbing with a dry cloth.8.2.2 Measure the total coated surface area of the test specimen (excluding cut edges and other uncoated surfaces).8.2.3 Degrease the test specimen
49、in an organic solvent, e.g. acetone or ethanol (96 %), at room temperature according to the method specified in A.1.8.2.4 Dry the test specimen thoroughly in accordance with A.2 and weigh immediately to 0,1 mg (mass, m 1).8.2.5 Immerse the test specimen completely, standing upright, in the test solution and leave it for exactly 15 min when using test solution A or 13 min when using test solution B. Maintain the test solution at 38 C 1 C for the duration of the test.Uniformity of temperature within the test solution is very importa
