ISO INTERNATIONAL STANDARD 3076 Third edition 2012-06-15 Round steel short link chains for general lifting purposes Medium tolerance sling chains for chain slings Grade 8 Chaines de levage général en acier, de section ronde, a maillons courts - Chaines de tolérance moyenne pour élingues - Classe 8 Reference number ISO 3076:2012(E) ISO @ ISO 2012 IHS under itted without license from IHS Not for Resale ISO 3076:2012(E) COPYRIGHTPROTECTEDDOCUMENT ISO 2012 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 in the country of the requester. ISO copyright office Case postale 56 · CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 4122 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ ISO 2012 -All rights reserved No reproductic etworking permitted without license from IHS Not for Resale ISO 3076:2012(E) Contents Page Foreword 1 Scope 2 Normative references 3 Terms and definitions 4 General conditions of acceptance 5 Dimensions 5.1 Nominal size, dn 5.2 Material diameter and tolerance. 5.3 Weld diameter.. 5.4 Length dimensionally affected by welding. 5.5 Pitch 5.6 Width 6 Materialandmanufacture 4 6.1 Qualityofmaterial.. 6.2 Heat treatment. 6.3 Working load limits (WLLs) 5 6.4 Mechanical properties... 6 7 Verification of safety requirements 10 7.1 Size of lot and selection of samples .... .10 7.2 Manufacturing proof force, breaking force and total ultimate elongation 10 7.3 Benddeflection 10 7.4 Toughness of chain test material. 11 8 Marking. .12 8.1 Grade marking 12 8.2 Identification marking .12 8.3 Inspection marking 12 9 Manufacturer's certificate .12 Annex A (informative) Bases for calculation .13 Annex B (informative) Mass of sling chains 16 Annex C (informative) Designation system. 17 Bibliography 18 ili ed without license from IHS Not for Resale