ISO/TR TECHNICAL REPORT 581 First edition 2005-02-01 Weldability Metallic materials - General principles Soudabilité-Materiaux métalliques-Principes genéraux Referencenumber ISO/TR 581:2005(E) [so @ISO 2005 ISO/TR581:2005(E) PDFdisclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The Iso Central Secretariat accepts no liability in this area. Adobe is atrademarkof Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO2005 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, ISo's member body in the country of the requester. ISO copyright office Case postale56:CH-1211Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ ISO 2005 - All rights reserved ISO/TR581:2005(E) Foreword Iso (the International Organization for Standardization) is a worldwide federation of national standards bodies non-governmental, in liaison with IsO, also take part in the work. iso collaborates closely with the InternationalElectrotechnicalCommission(lEC)onallmattersofelectrotechnicalstandardization International Standards are drafted in accordance with the rules given in the ISO/lEc Directives, Part 2. 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. In exceptional circumstances, when a technical committee has collected data of a different kind from that informative in nature and does not have to be reviewed until the data it provides are considered to be no longervalidoruseful. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights.IsOshallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights Sc 7, Representation and terms. It cancels and replaces IsO 581:1980, which has been technically revised. nanivaliontnrStanrtardlizatinn'ghtsreserved ili Canvriaht Internatinnal Ornanization fnr Stanardizatin TECHNICAL REPORT ISO/TR581:2005(E) WeldabilityMetallicmaterialsGeneralprinciples 1 Scope apply to all welding processes and all different types of construction whatever properties they may have. 2 Weldability 2.1 General A component consisting of metallic material is considered to be weldable by a given process when metallic continuitycanbeobtainedbyweldingusingasuitableweldingprocedure.Atthesametime,theweldsshall their influence on the construction of which they form a part. Weldability is governed by three factors, namely material, design and production (see Figure 1). Each of these factors is associated with different properties: a) Metallurgical weldability: material properties These are influenced primarily by production and to a minor extent by the design. b) Constructional weldability: design properties These are influenced primarily by the material and to a minor extent by production. C) Operativeweldability:productionproperties These are influenced primarily by the design and to minor extent by the material. Each of these sets of properties depends - like the weldability of a component - - on material, design and production,buttheimportanceoftheinfluencingfactorsdiffersforeach 2.2Metallurgical weldability A material possesses Metallurgical Weldability if, in the course of the procedure adopted, the chemical, metallurgical and physical