BS-EN-ISO-10062-2008.pdf

BRITISH STANDARD BS EN ISO 10062:2008 Corrosion tests in artificial atmosphere at very low concentrations of polluting gas(es) ICS 77.060 ? Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:43:50 MDTNo reproduction or networking permitted without license from IHS -,-,- BS EN ISO 10062:2008 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 29 February 2008 © BSI 2008 ISBN 978 0 580 55060 7 National foreword This British Standard is the UK implementation of EN ISO 10062:2008. It is identical to ISO 10062:2006. It supersedes BS EN ISO 10062:1995 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee ISE/NFE/8, Corrosion of metals and alloys. 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. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments/corrigenda issued since publication DateComments Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:43:50 MDTNo reproduction or networking permitted without license from IHS -,-,- EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN ISO 10062 January 2008 ICS 77.060Supersedes EN ISO 10062:1995 English Version Corrosion tests in artificial atmosphere at very low concentrations of polluting gas(es) (ISO 10062:2006) Corrosion des métaux et alliages - Essais de corrosion en atmosphère artificielle à très faible concentration en gaz polluants (ISO 10062:2006) Korrosionsprüfungen in künstlicher Atmosphäre mit sehr niedrigen Konzentrationen von Schadgas(en) (ISO 10062:2006) This European Standard was approved by CEN on 29 December 2007. 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 concerning such national standards 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 translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, 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 United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels © 2008 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 10062:2008: E Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:43:50 MDTNo reproduction or networking permitted without license from IHS -,-,- Foreword The text of ISO 10062:2006 has been prepared by Technical Committee ISO/TC 156 “Corrosion of metals and alloys” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 10062:2008 by 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 text or by endorsement, at the latest by July 2008, and conflicting national standards shall be withdrawn at the latest by July 2008. 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 10062:1995. 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, 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 10062:2006 has been approved by CEN as EN ISO 10062:2008 without any modifications. BS EN ISO 10062:2008 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:43:50 MDTNo reproduction or networking permitted without license from IHS -,-,- Reference number ISO 10062:2006(E) INTERNATIONAL STANDARD ISO 10062 Second edition 2006-01-15 Corrosion tests in artificial atmosphere at very low concentrations of polluting gas(es) Corrosion des métaux et alliages Essais de corrosion en atmosphère artificielle à très faible concentration en gaz polluants BS EN ISO 10062:2008 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:43:50 MDTNo reproduction or networking permitted without license from IHS -,-,- ii Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:43:50 MDTNo reproduction or networking permitted without license from IHS -,-,- iii Contents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references. 1 3 Terms and definitions. 2 4 Apparatus 2 5 Test methods. 2 6 Information to be given in the relevant specification . 6 7 Expression of results . 7 8 Test report . 7 Annex A (informative) Specifications for apparatus for corrosion tests in artificial atmospheres. 8 Annex B (informative) Typical apparatus for polluting gas corrosion tests 11 Bibliography. 12 BS EN ISO 10062:2008 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:43:50 MDTNo reproduction or networking permitted without license from IHS -,-,- iv Foreword ISO (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 interested 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 Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted 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 Standard 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 10062 was prepared by Technical Committee ISO/TC 156, Corrosion of metals and alloys. This second edition cancels and replaces the first edition (ISO 10062:1991), which has been technically revised. BS EN ISO 10062:2008 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:43:50 MDTNo reproduction or networking permitted without license from IHS -,-,- v Introduction Products with, for example, sensitive electrical functions, may, during storage or operation in indoor locations, be affected by atmospheric corrosion dependent on climatic factors such as temperature, relative humidity, air velocity and rate of change caused by temperature and humidity. Additionally, gaseous pollutants may seriously affect the rate of corrosion, as well as the occurrence of different corrosion mechanisms. Contaminants on the surface, such as salt, dust, oil and compounds liberated from plastics, may also affect the rate and mechanism of corrosion. Different corrosion-promoting gaseous pollutants dominate in different field environments: sulfur dioxide and nitrogen oxides in atmospheres influenced by combustion of fossil fuels and in traffic environments, hydrogen sulfide in atmospheres in the vicinity of petrochemical and steel industry, decaying organic matter, stagnant waters and animal shelters, and hydrogen sulfide and chlorine compounds in the vicinity of pulp and paper industry; if chlorine is used for bleaching Those gaseous pollutants are known to act as single corrosion-promoting factors. However, in atmospheres where more than one gaseous pollutant is present, synergistic effects may be initiated. As a result, a considerable increase in the corrosion rate may occur, compared to the case when the different gaseous pollutants act as single corrosion-promoting factors. This International Standard is intended to a) define a general method using atmospheres polluted by one or more gases at very low volume fractions u106 under specified conditions of temperature and relative humidity, so as to avoid condensation phenomena during the test, b) define the test apparatus and procedure required to achieve the best possible reproducibility, c) assess performance under test conditions which accelerate corrosion; as knowledge of operating conditions proceeds, more suitable pollutants or pollutant mixtures could be used. BS EN ISO 10062:2008 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:43:50 MDTNo reproduction or networking permitted without license from IHS -,-,- blank Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:43:50 MDTNo reproduction or networking permitted without license from IHS -,-,- 1 Corrosion tests in artificial atmosphere at very low concentrations of polluting gas(es) WARNING Safety rules for personnel: Handling of the gases used for testing can be hazardous and must be left to skilled chemists or conducted under their control. The test equipment must be used and maintained by skilled personnel, not only so that the tests can be performed correctly, but also because of the hazards to health and safety that are involved. 1 Scope This International Standard specifies tests which are intended to determine the influence of one or more flowing polluting gas(es) at volume fractions less than or equal to 10-6 on test samples and/or articles of metals and alloys with or without corrosion protection under determined conditions of temperature and relative humidity. These tests apply to a) metals and their alloys, b) metallic coatings (anodic and cathodic), c) metals with conversion coatings, d) metals with anodic oxide coatings, and e) metals with organic coatings. 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 554, Standard atmospheres for conditioning and/or testing Specifications ISO 558, Conditioning and testing Standard atmospheres Definitions ISO 7384, Corrosion tests in artificial atmosphere General requirements ISO 8407, Corrosion of metals and alloys Removal of corrosion products from corrosion test specimens BS EN ISO 10062:2008 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:43:50 MDTNo reproduction or networking permitted without license from IHS -,-,- 2 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 exposure time interval of time elapsed between the moment when the specimens are introduced into the test chamber and the end of the test 3.2 test duration interval of time during which the specimens are exposed to polluting gases 4 Apparatus Special attention shall be paid to equipment design and the choice of construction materials, in order that the conditions (less than ± 1 °C for temperature and less than ± 3 % for relative humidity) are uniformly consistent throughout the working space, able to ensure no condensation in the test chamber, and are repeatable. The apparatus shall enable the use, singly or in mixtures, of polluting gas(es) such as SO2, H2S, Cl2 and NO2 up to at least the concentration required, for each gas, by the test method. The important parameters are a) the materials used for the test chamber and the gas handling system, b) the geometry of the test chamber, c) the rate and pattern of the gas flow, d) the homogeneity of gas mixing, e) the incident illumination (see A.1.6) The apparatus shall be constructed according to Annex A and shall meet its requirements. A typical apparatus for polluting-gas corrosion tests is also shown in Annex B. 5 Test methods 5.1 Test severity 5.1.1 General The test severity, to be given in the relevant specification, is defined by the type, concentration and flow rate of polluting gas, the temperature, the relative humidity, and the test duration. BS EN ISO 10062:2008 Copyright British Standards Institution Pr