ISO INTERNATIONAL STANDARD 5003 Secondedition 2016-03-01 Flat bottom (Vignole) railway rails 43 kg/m and above Rails Vignole de masse superieure ou égale a 43 kg/m Reference number IS0 5003:2016(E) ISO International Organization for Standardization =ZHEJIANG INST OF STANDARDIZATION C1 5956617 @IS02016 mitted without license from IHS IS0 5003:2016(E) COPYRIGHTPROTECTEDDOCUMENT IS02016,PublishedinSwitzerland 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 copyrightoffice Ch. de Blandonnet 8 . 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 PrganizationforStandardization nsee-ZHEJIANG INST OF STANDARDIZzARoISQ06 - All rights reserved etworking permitted without license from IHS IS0 5003:2016(E) Contents Page Foreword ..V 1 Scope 1 2 Normative references 3 Terms and definitions 4 Information to be supplied by the purchaser. 5 Test methods. .3 5.1 Test items, testing frequency and test methods .3 5.2 Chemical composition .3 5.3 Hydrogen content.. .4 5.4 Total oxygen content. ..4 5.5 Tensile test 4 5.6 Hardness. 5.6.1 General requirements 4 5.6.2 Surface hardness .4 5.6.3 Internal hardness .5 5.7 Microstructure 5 5.8 Decarburization 5 5.9 Non-metallic inclusions .5 5.9.1 General requirements. 5.9.2 Testing methods. .5 5.10 Macrostructure .5 5.11 Ultrasonic test. 6 5.11.1 Testingarea .6 5.11.2 Sensitivity requirements .6 5.11.3 Calibration rails. .6 5.12 Residual stress. .6 5.12.1 Test sample rail. .6 5.12.2 Test pieces.. 5.12.3 Test method .6 5.13 Fracture toughness (Kic) ..6 5.13.1 Test sample. .6 5.13.2 Test pieces test method 5.14 Fatigue crack growth rate. .7 5.14.1 Test sample rail. .7 5.14.2 Test pieces. .7 5.14.3 Test method. .7 5.14.4 Number of tests and test conditions .7 5.15 Fatiguetest. .7 5.15.1 Test sample rail 5.15.2 Test pieces ..8 5.15.3 Test method. 5.15.4 Number of tests and test conditions. 5.16 Variation of centre line running surface hardness of heat-treated rails ..8 6 Tolerances for dimension, shape, length and weight ..8 6.1 Dimension, shape and length tolerance. 6.2 Straightness, surface flatness and twist ..8. 6.3 Weight .9 7 Technical requirements. .14 7.1 Manufacturing methods .14 7.2 Chemical composition .14 7.3 Mechanical properties ..16 7.4 Microstructure ..17 iii ISee=ZHEJIANG INST OF STANDARDIZATION C1 5956617 vithoutlicense from IHS