ISO INTERNATIONAL STANDARD 14250 First edition 2000-11-01 Steel Metallographic characterization of duplex grain size and distributions Aciers- Caracterisationmetallographiquedelagrosseur etdela distribution degrainduplex Reference number ISO 14250:2000(E) OSI @ISO2000 Copyright International Organization for Standardizatior Not for Resale ISO14250:2000(E) PDF disclaimer 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 area. Adobe is a trademark of 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 parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by isO member bodies. In the unlikely event ISO2000 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's member body inthecountryof therequester ISO copyright office Case postale 56.CH-1211Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyright@iso.ch Web www.iso.ch Printed in Switzerland @IsO2000-All rights reserved No reproduction or netwiorking permited without license from IHS Not for Resale ISO14250:2000(E) Contents Page Foreword. .iv 1 Scope. 2 Normativereferences 3 Term and definition ... 4 Abbreviated terms. 5 Principle. 6 Apparatus.. 6.1 General.... 6.2 Comparison procedure for estimation of area fractions 6.3 Point count procedure for estimation of area fractions. 6.4 Determination of grain size... 7 Sampling and preparation oftest specimens.. 2 Procedure.... 8.1 Recognizing and classifying duplex grain size.. 8.2 Estimationof area fractions.... 8.3 Determination of grain size... 9 Test report. AnnexA(normative)Chartforestimationofareafractions... .8 ii Not for Re