7587 International Standard (ISO INTERNATIONAL ORGANIZATIONFOR STANDARDIZATIONMEKAYHAPOAHAA OPTAHW3ALMA HO CTAHAAPTW3ALWWORGANISATION INTERNATIONALEDE NORMALISATION Electroplated coatings of tin-lead alloys - Specification and test methods Depots électrolytiques d'alliageétain-plomb-Specificationsetmethodesd'essai First edition - 1986-12-15 7587-1986 (E) UDC 669.65'4.87 Ref. No. ISO 7587-1986 (E) Descriptors : metal coatings, electrodeposited coatings, tin coatings, lead coating, classifications, specifications, tests, determination, thickness,adhesion,determinationofcontent,tin. ISO Pricebasedon11pages Copyright Intermational Organization for Standardization Not for Resale 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, govern- mental and non-governmental, in liaison with iso, also take part in the work Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the iSO Council. They are approved in accordance with ISO procedures requiring at least 75 % approval by the member bodies voting. International Standard ISO 7587 was prepared by Technical Committee ISO/TC 107, Metallic and other non-organic coatings. Users should note that all International Standards undergo revision from time to time and that any reference made herein to any other International Standard implies its latest edition, unless otherwise stated. International Organization for Standardization, 1986 Printed in Switzerland Copyriaht Intemational Oorganizatin for Standardization No reprodt Not for Resale INTERNATIONAL STANDARD ISO 7587-1986 (E) Electroplated coatings of tin-lead alloys - Specification and test methods Introduction such steels are subject to hydrogen embrittlement (see 8.2). Tin-lead alloy coatings are used extensively in the telecom- munications industry and their use has improved the integrity and reliability of soldered electrical circuits. Tin-lead alloy 2 References coatingsarealsoknowntobemoreresistanttowhiskergrowth and allotropic changethan pure tin. ISo 1463, Metallic and oxide coatings Measurement of Annex D gives additional information as guidance to the user. coating thickness - Microscopical method. ISo 2064, Metallic and other non-organic coatings It is essential that the purchaser should state the infor- Defi- mation itemized in 4.1 and, if appropriate, 4.2. Specifying nitions and conventions concerning the measurement of thickness. ISO 7587 without this information is insufficient. ISo 2177, Metallic coatings Measurement of coating 1 Scope and field of application thickness - Coulometric method by anodic dissolution. Iso 2819, Metallic coatings on metallic substrates This International Standard specifies requirements for elec- Elec- troplated coatings of tin-lead alloy containing between 50 % trodeposited and chemically deposited coatings -Review of methods available for testing adhesion. (m/m) and 70 % (m/m) of tin (see 10.3). It may be used for tin- lead alloys of other compositions but the properties of such Iso 2859, Sampling procedures and tables for inspection by coatingsmaybe differentfromthose of the alloy rangequoted. attributes.2) A classification scheme is included by which the nature of the Iso 3497, Metallic coatings - Measurements of coating basis metal and the coating composition, within these limits. thickness - X-ray spectrometric methods. canbe definedand whichalso contains provisionfor flow melting and bright deposited coatings. Iso 3543, Metallic and non-metallic coatings -- Measurements The coatings are intended for use on fabricated