ISO INTERNATIONAL STANDARD 12725 Second edition 2019-03 Nickel and nickel alloy castings Pieces moulées en nickel et alliages de nickel Reference number IS0 12725:2019(E) ISO @IS02019 IS0 12725:2019(E) COPYRIGHTPROTECTEDDOCUMENT @ ISO 2019 All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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 CP 401 : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +4122 749 0111 Fax: +41 22 749 09 47 Email: [email protected] Website: www.iso.org Published in Switzerland ii @ IS0 2019 - All rights reserved IS0 12725:2019(E) Contents Page Foreword ..iv 1 Scope 1 2 Normative references ..1 3 Terms and definitions 4 Alloy identification 5 General requirements for delivery ..1 5.1 Information to be supplied by the purchaser .1 5.2 Additional information to be supplied 2 6 Manufacture .2 6.1 Melting .2 6.2 Heat treatment .2 6.3 Welding. 2 6.3.1 General 2 6.3.2 Restriction .2 7 Requirements .2 7.1 Composition .2 7.2 Mechanical properties 5 7.3 Supplementary requirements .5 8 Marking ..6 9 Supplementary requirements 6 Annex A (informative) Rules for nickel and nickel alloys identification based on chemical symbols 7 Annex B (informative) Supplementary requirements .9 Bibliography .12 @ IS0 2019 - All rights reserved iii