ISO/TS 4949 2016 © ISO 2016 Steel names based on letter symbols Désignations des aciers fondées sur des lettres symboles TECHNICAL SPECIFICATION ISO/TS 4949 Reference number ISO/TS 4949 2016(E) Seco[.]
TECHNICAL SPECIFICATION ISO/TS 4949 Second edition 2016-11-01 Steel names based on letter symbols Désignations des aciers fondées sur des lettres symboles Reference number ISO/TS 4949:2016(E) © ISO 2016 ISO/TS 4949:2016(E) COPYRIGHT PROTECTED DOCUMENT © ISO 2016, Published in Switzerland All rights reserved Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission Permission can be requested from either ISO at the address below or ISO’s member body in the country of the requester ISO copyright office Ch de Blandonnet • CP 401 CH-1214 Vernier, Geneva, Switzerland Tel +41 22 749 01 11 Fax +41 22 749 09 47 copyright@iso.org www.iso.org ii © ISO 2016 – All rights reserved ISO/TS 4949:2016(E) Contents Page Foreword iv 1 Scope Normative references Terms and definitions 4 Principles 4.1 A unique steel name 4.2 Formulation of steel names 4.3 Allocation of steel names Reference to product standards Classification of steel names Structure of steel names 7.1 Initial symbol for steel castings 7.2 Steels designated according to their application and mechanical or physical properties (group 1) 7.3 Steels designated according to chemical composition (group 2) 7.3.1 Non-alloy steels (except free-cutting steels) with an average manganese content