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1、Reference number ISO 16120-4:2001(E) ISO 2001 INTERNATIONAL STANDARD ISO 16120-4 First edition 2001-08-15 Non-alloy steel wire rod for conversion to wire Part 4: Specific requirements for wire rod for special applications Fil-machine en acier non alli destin la fabrication de fils Partie 4: Exigence
2、s spcifiques au fil-machine pour applications spciales ISO 16120-4:2001(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and i
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5、d, please inform the Central Secretariat at the address given below. ISO 2001 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
6、writing from either ISO at the address below or ISOs 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 + 41 22 749 09 47 E-mail copyrightiso.ch Web www.iso.ch Printed in Switzerland ii ISO 2001 All rights reserved -,-,- I
7、SO 16120-4:2001(E) ISO 2001 All rights reservediii 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. Eac
8、h 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, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the Internation
9、al Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. Draft International Standards adopted by the technical committees are circulated to the member bodies for
10、 voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this part of ISO 16120 may be the subject of patent rights. ISO shall not be held responsible for identifying a
11、ny or all such patent rights. International Standard ISO 16120-4 was prepared by Technical Committee ISO/TC 17, Steel, Subcommittee SC 17, Steel wire rod and wire products. This first edition of ISO 16120-4, together with parts 1, 2 and 3 cancels and replaces ISO 8457-2 (1989) which has been technic
12、ally revised and augmented. ISO 16120 consists of the following parts, under the general title Non-alloy steel wire rod for conversion to wire: ?Part 1: General requirements ?Part 2: Specific requirements for general purpose wire rod ?Part 3: Specific requirements for rimmed and rimmed-substitute, l
13、ow-carbon steel wire rod ?Part 4: Specific requirements for wire rod for special applications -,-,- -,-,- INTERNATIONAL STANDARDISO 16120-4:2001(E) ISO 2001 All rights reserved1 Non-alloy steel wire rod for conversion to wire Part 4: Specific requirements for wire rod for special applications 1Scope
14、 This part of ISO 16120 defines wire rod with improved characteristics intended for drawing and/or cold rolling. 2Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of ISO 16120. For dated references, su
15、bsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this ISO 16120 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest ed
16、ition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards ISO 4948-1:1982, Steels Classification Part 1: Classification of steels into unalloyed and alloyed steels based on chemical composition ISO 4948-2:1981, Steels Cl
17、assification Part 2: Classification of unalloyed and alloyed steels according to main quality classes and main property or application characteristics ISO 4967:1998, Steel Determination of content of non metallic inclusions Micrographic method using standard diagrams ISO 16120-1:2001, Non-alloy stee
18、l wire rod for conversion to wire Part 1: General requirements 3Requirements 3.1General For the general requirements see ISO 16120-1. 3.2Chemical composition For the heat analysis, the values shown in Table 1 apply. The permissible deviations of the product analysis relative to the specified value o
19、f the heat analysis are given in Table 2. When subsequent patenting is envisaged wire rod may be ordered with restricted analysis for the residual elements. -,-,- ISO 16120-4:2001(E) 2 ISO 2001 All rights reserved Table 1 Chemical analysis (heat analysis) a Heat analysisSteel gradebCc % Sid % Mne %
20、P % max. S % max. Crf % max. Nif % max. Mo % max. Cuf,g % max. Alh % max. Ni % max. C3D2 C5D2 C8D2 C10D2 C12D2 C15D2 C18D2 C20D2 C26D2 C32D2 C36D2 C38D2 C40D2 C42D2 C46D2 C48D2 C50D2 C52D2 C56D2 C58D2 C60D2 C62D2 C66D2 C68D2 C70D2 C72D2 C76D2 C78D2 C80D2 C82D2 C86D2 C88D2 C92D2 C98D2 u0,05 u0,07 0,0
21、6-0,10 0,08-0,12 0,10-0,14 0,13-0,17 0,16-0,20 0,18-0,23 0,24-0,29 0,30-0,34 0,34-0,38 0,36-0,40 0,38-0,42 0,40-0,44 0,44-0,48 0,46-0,50 0,48-0,52 0,50-0,54 0,54-0,58 0,56-0,60 0,58-0,62 0,60-0,64 0,64-0,68 0,66-0,70 0,68-0,72 0,70-0,74 0,74-0,78 0,76-0,80 0,78-0,82 0,80-0,84 0,84-0,88 0,86-0,90 0,9
22、0-0,95 0,96-1,00 u0,30 u0,30 u0,30 u0,30 u0,30 u0,30 u0,30 u0,30 0,10-0,30 0,10-0,30 0,10-0,30 0,10-0,30 0,10-0,30 0,10-0,30 0,10-0,30 0,10-0,30 0,10-0,30 0,10-0,30 0,10-0,30 0,10-0,30 0,10-0,30 0,10-0,30 0,10-0,30 0,10-0,30 0,10-0,30 0,10-0,30 0,10-0,30 0,10-0,30 0,10-0,30 0,10-0,30 0,10-0,30 0,10-
23、0,30 0,10-0,30 0,10-0,30 0,30-0,50 0,30-0,50 0,30-0,50 0,30-0,50 0,30-0,50 0,30-0,50 0,30-0,50 0,30-0,50 0,50-0,70 0,50-0,70 0,50-0,70 0,50-0,70 0,50-0,70 0,50-0,70 0,50-0,70 0,50-0,70 0,50-0,70 0,50-0,70 0,50-0,70 0,50-0,70 0,50-0,70 0,50-0,70 0,50-0,70 0,50-0,70 0,50-0,70 0,50-0,70 0,50-0,70 0,50-
24、0,70 0,50-0,70 0,50-0,70 0,50-0,70 0,50-0,70 0,50-0,70 0,50-0,70 0,020 0,020 0,020 0,020 0,020 0,020 0,020 0,020 0,020 0,020 0,020 0,020 0,020 0,020 0,020 0,020 0,020 0,020 0,020 0,020 0,020 0,020 0,020 0,020 0,020 0,020 0,020 0,020 0,020 0,020 0,020 0,020 0,020 0,020 0,025 0,025 0,025 0,025 0,025 0
25、,025 0,025 0,025 0,025 0,025 0,025 0,025 0,025 0,025 0,025 0,025 0,025 0,025 0,025 0,025 0,025 0,025 0,025 0,025 0,025 0,025 0,025 0,025 0,025 0,025 0,025 0,025 0,025 0,025 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,
26、10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,10 0,05 0,05 0,05 0,05 0,05 0,05 0,05 0,05 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,
27、03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,15 0,15 0,15 0,15 0,15 0,15 0,15 0,15 0,15 0,15 0,15 0,15 0,15 0,15 0,15 0,15 0,15 0,15 0,15 0,15 0,15 0,15 0,15 0,15 0,15 0,15 0,15 0,15 0,15 0,15 0,15 0,15 0,15 0,15 0,01 0,01 0,01 0,01 0,01 0,01 0,01 0,01 0,01 0,
28、01 0,01 0,01 0,01 0,01 0,01 0,01 0,01 0,01 0,01 0,01 0,01 0,01 0,01 0,01 0,01 0,01 0,01 0,01 0,01 0,01 0,01 0,01 0,01 0,01 0,007 0,007 0,007 0,007 0,007 0,007 0,007 0,007 0,007 0,007 0,007 0,007 0,007 0,007 0,007 0,007 0,007 0,007 0,007 0,007 0,007 0,007 0,007 0,007 0,007 0,007 0,007 0,007 0,007 0,0
29、07 0,007 0,007 0,007 0,007 a Elements not included in this table may not be added intentionally to the steel without the agreement of the purchaser, except those intended for finishing the heat. The addition of microalloying elements may be agreed upon between the manufacturer and purchaser at the t
30、ime of ordering. b Special non-alloy steel complying with ISO4948-1 and ISO 4948-2. c For steels C32D2 to C98D2 the carbon range may be enlarged by 0,01 % either by lowering the minimum or by increasing the maximum by agreement between manufacturer and purchaser. d For wire rod intended for galvaniz
31、ing the required lower limit of silicon content should be specified at the time of ordering. e For the manganese content, a different range from the one indicated in the table can be agreed upon at the time of ordering with an amplitude of 0,20 %, with a maximum not exceeding 1,20 % and a minimum no
32、t lower than 0,30 %. f The sum of the contents Cu + Ni + Cr shall not exceed 0,30 %. g Cu + Sn u 0,15 %. For certain applications the Cu content may be restricted to 0,12 % maximum by agreement. h By agreement at the time of ordering the value for aluminium can be fixed at 0,02 % to 0,10 %. The valu
33、e for silicon can then be fixed at u 0,10 % on request. i If in accordance withh, the Al content is fixed at 0,02 % to 0,10 %, the limit value of N shall be agreed at the time of ordering. -,-,- ISO 16120-4:2001(E) ISO 2001 All rights reserved3 Table 2 Permissible deviation in the product analysis i
34、n relation to the specified value of the heat analysis ElementsSteel gradePermissible deviation in product analysis % CC3D2 to C20D2 C26D2 to C82D2 C86D2 to C98D2 ? 0,02 ? 0,03 ? 0,04 SiAll grades? 0,04 MnAll grades? 0,06 P and SAll grades? 0,005 3.3Internal soundness and surface quality The wire ro
35、d shall have no internal or surface imperfections such as: shrink holes, segregation, cracks, folds, incrustations, notches, scabs, rolling burrs and damage which may be detrimental to its correct use. 3.4Depth of surface discontinuities The rod shall not have any surface discontinuities of depth gr
36、eater than the values shown in Table 3. These limit values apply for the test chosen in accordance with 9.4.3 and 9.5.3 of ISO 16120-1:2001. Table 3 applies to round wire rod only. Maximum discontinuity levels for other shapes may be agreed. Table 3 Limit values for the depth of surface discontinuit
37、ies of round wire rod Nominal diameter dN(mm) Maximum permissible depth of surface discontinuities mm 5 u dNu 12 12 ? dNu 30 0,15 0,20 NOTE 1The depth of surface discontinuities is measured from the actual surface of the product in a radial direction. NOTE 2By agreement at the time of enquiry and or
38、der, limit values in accordance with ISO 9443 may be specified. 3.5Depth of decarburization The specifications given below concerning the depth of decarburization and the inspection procedure relating to it only apply to grades C42D2 to C98D2. 3.5.1Complete decarburization The wire rod shall not dis
39、play complete decarburization. 3.5.2Partial decarburization The wire rod shall not display partial decarburization of depth greater than the values given in Table 4. -,-,- ISO 16120-4:2001(E) 4 ISO 2001 All rights reserved The maximum depth of decarburization shall not exceed twice the limit of Tabl
40、e 4. These limit values are applicable for the test described in 9.5.4 of ISO 16120-1:2001. At the time of enquiry and order, it shall be agreed whether Class A or Class B of Table 4 is requested. Table 4 Limit of the depth of partial decarburization Limit valuesa mm Nominal diameter dN(mm) AB 5 u d
41、Nu 8 8 ? dNu 30 0,10 1,2 % dN 0,08 1,0 % dN a By agreement at the time of enquiry and order, other limit values may be specified. 3.6Non-metallic inclusions The method for assessment of non-metallic inclusions and the assessment criteria shall be agreed at the time of ordering, as far as possible wi
42、th reference to ISO 4967. 3.7Core segregation If so agreed at the time of enquiry and order, wire rod of grade C60D2 or grades with a higher carbon content shall be inspected for carbon segregation. Not more than 10 % of the samples tested shall be of Class 4; Class 5 is not allowed (see annex A of
43、ISO 16120-1:2001). However, it is recommended that the evaluation be done as part of a quality system. 3.8Tensile strength If requested by the purchaser at the time of ordering, the manufacturer shall provide guidance values of tensile strength. The permissible variation on the values agreed at the
44、time of ordering shall not exceed the values reported in Table 5. Table 5 Permissible variation of tensile strength values Steel gradePermissible variationa N/mm2 C3D2 to C20D2 C26D2 to C70D2 C72D2 to C98D2 80 100 120 a These values are applicable to wire rod with the same nominal diameter, up to 12
45、 mm, of the same heat and rolled in the same continuous lot. They are not applicable wheneof Table 1 is used. NOTE1 N/mm2= 1 MPa 3.9Austenitic grain size If requested by the purchaser at the time of ordering, where applicable, the parties may agree with a specific austenitic grain size. ISO 16120-4:2001(E) ISO 2001 All rights reserved5 Bibliography 1ISO 9443:1991, Heat-treatable and alloy steels Surface quality classes for hot-rolled round bars and wire rods Technical delivery conditions ISO 16120-4:2001(E) ICS 77.140.60 Price based on 5 pages ISO 2001 All rights reserved -,-,-