ISO INTERNATIONAL STANDARD 11306 First edition 1998-02-15 Corrosion of metals and alloys - Guidelines for exposing and evaluating metals and alloys in surface sea water Corrosion des metaux et alliages - Lignes directrices pour I'exposition et I'évaluation des metaux et alliages a la surface de I'eau de mer ISO Referencenumber ISO11306:1998(E) py IHS under lic Not for Resale ISO 11306:1998(E) Foreword IsO (the International Organization for Standardization) is a worldwide federationofnationalstandardsbodies(lsOmemberbodies).Theworkof 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 sO, also take part in the work. isO collaborates closely with the International Electrotechnical Commission (lEC)onallmattersofelectrotechnicalstandardization. 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. International Standard ISO 11306 was prepared by Technical Committee ISO/TC 156, Corrosion of metals and alloys. @ISO1998 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced microfilm, without permission in writing from the publisher. International Organization for Standardization Case postale 56·CH-1211 Geneve 20· Switzerland Internet [email protected] X.400 C=ch; a=400net; p=iso; 0=isocs; S=central Printed in Switzerland Not for Resale INTERNATIONAL STANDARD @ISO ISO 11306:1998(E) Corrosion of metals and alloys Guidelines for exposing and evaluating metals and alloys in surface sea water 1 Scope 1.1 This International Standard gives guidance on the conditions and procedures to be followed when conducting locations.ThisInternational Standard applies to exposure areasfrom above water level which are wetfor a significant period (splash and tidal zones) down to a depth at which the composition of the sea water is similar to that at the surface. 1.2 This practice gives guidance on procedures for the evaluation of the effects of sea water on metals and alloys. 1.3 Because of the variability and complexity of sea water, exposures over a minimum period of one year are considered necessary to minimize the influence of these variable factors. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard.At the time of publication,the editions indicated were valid.All standards are subjectto revision, and parties to agreements based on this International Standard are encouraged to investigate the registers of currently valid International Standards. Iso 8407:1991, Corrosion of metals and alloys - Removal of corrosion products from corrosion test specimens. Iso 11463:1995, Corrosion of metals and alloys Evaluation of pitting corrosion. 3 Control specimens It is prudent, because of the inherent variability in processing conditions, that control specimens be used in corrosion tests. Two kinds of control specimens are needed as follows. example, mild steel). Its corrosion rate will help to determine the length of the test period. test period. In the case of evaluations of aluminium alloys, care should be exercised in the location of these copper specimens (see 6.2). Copyright International Organization for Standardizatior Not for Resale