ISO INTERNATIONAL STANDARD 6934-2 First edition 1991-07-01 Steel for the prestressing of concrete -- Part 2: Coid-drawn wire Acier pour armatures de précontrainte Partie 2: Fil trefile a froid Reference number 1SO 6934-2:1991(E) Copyright International Organization for Standardization ted without license from IHS Not for Re 1SO 6934-2:1991(E) Foreword Iso (the international Organization for Standardization) is a worldwide federation of national standards bodies (Iso member bodies). The work of preparing International Standards is normally carried out through IsO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, govern- mental and non-governmental, in liaison with Iso, also take part in the work. iso collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft Internationai Standards adopted by the technical committees are national Standard requires approval by at ieast 75 % of the member bodies casting a vote. International Standard tso 6934-2 was prepared by Technical Committee ISO/TC 17, Steel. Iso 6934 consists of the following parts, under the general title Steel for the prestressing of concrete: Part 1: General requirements Part 2: Cold-drawn wire Part 3: Quenched and tempered wire Part 4: Strand Part 5: Hot-rolled steel bars with or without subsequent processing Annexes A and B of this part of isO 6934 are for information only. C ISO 1991 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, inciuding photocopying and microfilm, without permission in writing from the publisher. International Organization for Standardization Case Postale56.CH-1211Genéve 20·Switzeriand Printed in Switzerland Copyright International Organization for Standardization Notfor Resale ISO 6934-2:1991(E) INTERNATIONAL STANDARD Steel for the prestressing of concrete Part 2: Cold-drawn wire Scope 5 Surface configuration This part of Iso 6934 specifies requirements for There are several types of surface configuration round, cold-drawn, high-tensile steei wire, either (ribs, indentations, crimps), the purpose of which is plain, indented, ribbed or crimped. The product is to improve bond properties between wire and con- supplied as mill coil wire or straightened and crete. The type of surface configuration shall be stress-relieved wire in coils or cut fengths, accord- agreed between purchaser and manufacturer. ing to the general requirements specified in Exampies of indentations and crimps are given in ISO 6934-1. annex A. 2 Normative reference 6 Properties The following standard contains provisions which, through reference in this text, constitute provisions The designations, data for information and required of this part of IsO 6934. At the time of publication, properties are given in table 1 and table 2. the edition indicated was valid. All standards are subject to revision, and parties to agreements based on this part of isO 6934 are encouraged to investi- gate the possibility of applying the most recent edi- 6.1 Dimensions and properties of mill coil tion of the standard indicated below. Members of wire iEC and isO maintain registers of currentiy valid International Standards 6.1.1 Dimensions, masses and tensite properties Iso 6934-1:1991, Steel for the prestressing of con- crete - Part 1: General requirements. See table 1. 3 Definitions 6.1.2 Elongation and ductility For the purposes of isO 6934, the definitions given The percentage total elongation at maximum force in 1so 6934-1 apply. measured on a length of 200 mm, shall be not less than 1,5 %. Conditions of manufacture Ail wires shall show a ductile fracture with a con- 4 striction visible to the naked eye. The wire shall be manufactured from high carbon All wires shall withstand a reverse bend