© ISO 2017 Non alloy steel wire rod for conversion to wire — Part 2 Specific requirements for general purpose wire rod Fil machine en acier non allié destiné à la fabrication de fils — Partie 2 Exigen[.]
INTERNATIONAL STANDARD ISO 16120-2 Third edition 2017-02 Non-alloy steel wire rod for conversion to wire — Part 2: Specific requirements for general purpose wire rod Fil-machine en acier non allié destiné la fabrication de fils — Partie 2: Exigences spécifiques au fil-machine d’usage général Reference number ISO 16120-2:2017(E) © ISO 2017 ISO 16120-2:2017(E) COPYRIGHT PROTECTED DOCUMENT © ISO 2017, Published in Switzerland All rights reserved Unless otherwise specified, no part o f 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 o f the requester ISO copyright o ffice Ch de Blandonnet • 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 ii © ISO 2017 – All rights reserved ISO 16120-2:2017(E) Contents Page Foreword iv Scope Normative re ferences Terms and definitions Designation Requirements 5.1 General 5.2 Chemical composition f 5.4 Depth of surface discontinuities 5.5 Core segregation 5.6 Tensile strength 5.7 Scale characteristics 5.8 Mechanical damage Annex A (informative) Steel designations and designation o f comparable steel grades I nternal s o undnes s and s ur ace quality Bibliography © ISO 2017 – All rights reserved iii ISO 16120-2:2017(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies) The work o f 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, governmental 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 o f electrotechnical standardization The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part In particular the different approval criteria needed for the di fferent types o f ISO documents should be noted This document was dra fted in accordance with the editorial rules of the ISO/IEC Directives, Part (see www.iso org/directives) Attention is drawn to the possibility that some o f the elements o f this document may be the subject o f patent rights ISO shall not be held responsible for identi fying any or all such patent rights Details o f any patent rights identified during the development o f the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso org/patents) Any trade name used in this document is in formation given for the convenience o f users and does not constitute an endorsement For an explanation on the meaning o f ISO specific terms and expressions related to formity assessment, as well as information about ISO’s adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html This document was prepared by Technical Committee ISO/TC 17, Steel, Subcommittee SC 17, Steel wire This third edition cancels and replaces the second edition (ISO 16120-2:2011), which has been rod an d wire products technically revised A list of all parts in the ISO 16120 series can be found on the ISO website iv © ISO 2017 – All rights reserved INTERNATIONAL STANDARD ISO 16120-2:2017(E) Non-alloy steel wire rod for conversion to wire — Part 2: Specific requirements for general purpose wire rod Scope This document is applicable to general purpose steel wire rod for drawing and/or cold rolling T he Normative re ferences fol lowi ng c u ments are re ferre d to i n the tex t i n s uch a way th at s ome or a l l o f thei r content s titute s re qu i rements o f th i s c u ment For date d re ference s , on ly the e d ition cite d app l ie s For u ndate d re ference s , the late s t e d ition o f the re ference d c ument (i nclud i ng a ny amend ments) appl ie s ISO 4948-2, Steels — Classification — Part 2: Classification of un alloyed an d alloy steels accordin g to m ain quality classes an d m ain property or application ch aracteristics ISO 16120-1:—,1) Non-alloy steel wire rod for conversion to wire — Part : Gen eral requirem ents Terms and definitions No term s and defi nition s a re l i s te d i n th i s c u ment ISO and IEC maintain terminological databases for use in standardization at the following addresses: — IEC Electropedia: available at http://www.electropedia org/ — ISO Online browsing platform: available at http://www.iso org/obp Designation I n the de s ignation C# #D, “C ” me a n s non-a l loy s te el (s e e I S O/ T S 49 49) ; # # i s the i nd ic ative average content o f c arb on; “D ” s ign i fie s that it i s for wi re - d rawi ng I f s te el s a re ordere d accord i ng to chem ic a l comp o s ition, # # i nd ic ate s the va lue s to b e i n s er te d b y the purchaser according to the steel names designated in Table The designations of comparable steel grades in national or regional standards are provided in Annex A Steels can also be ordered according to tensile strength The mid-point of the required ultimate tensile f required mid-point of the UTS is 020 MPa “##” means “to be left blank” since the carbon content is at f f the grade designation until shipment See Table for the grade designation , fi rs t colu m n s treng th ( U T S ) range s l l b e i nd ic ate d a s a s u fi x to the grade de s ignation, e g C# #D – 102 , where the the d i s cre tion o the s upplyi ng m i l l, and the s upp lyi ng m i l l i nd ic ate s the e xac t nu mb er o # # b as e d on 1) Under preparation Stage at the time of publication: ISO/FDIS 16120-1:2016 © ISO 2017 – All rights reserved ISO 16120-2:2017(E) Requirements 5.1 General For the general requirements, see ISO 16120-1 5.2 Chemical composition For the heat analysis, the values shown in Table shall apply I f a product analysis is required, the permissible deviations o f the product analysis relative to the specified value o f the heat analysis are given in Table Table — Chemical analysis (heat analysis) Steel Cb Si c Mnd C4D C7D C9D C10D C12D C15D C18D C20D C26D C32D C38D C42D C48D C50D C52D C56D C58D ≤0,06 ≤0,30 ≤0,30 ≤0,30 ≤0,30 ≤0,30 ≤0,30 ≤0,30 ≤0,30 0,30 to 0,60 0,30 to 0,60 0,30 to 0,60 0,30 to 0,60 0,30 to 0,60 0,30 to 0,60 0,30 to 0,60 0,30 to 0,60 0,50 to 0,80 0,50 to 0,80 0,50 to 0,80 0,50 to 0,80 0,50 to 0,80 0,50 to 0,80 0,50 to 0,80 0,50 to 0,80 0,50 to 0,80 grade a % 0,05 to 0,09 ≤0,10 0,08 to 0,13 0,10 to 0,15 0,12 to 0,17 0,15 to 0,20 0,18 to 0,23 0,24 to 0,29 0,30 to 0,35 0,35 to 0,40 0,40 to 0,45 0,45 to 0,50 0,48 to 0,53 0,50 to 0,55 0,53 to 0,58 0,55 to 0,60 % 0,10 to 0,30 0,10 to 0,30 0,10 to 0,30 0,10 to 0,30 0,10 to 0,30 0,10 to 0,30 0,10 to 0,30 0,10 to 0,30 0,10 to 0,30 NOTE Elements not included in Table % Heat analysis P S % max 0,035 0,035 0,035 0,035 0,035 0,035 0,035 0,035 0,030 0,030 0,030 0,030 0,030 0,030 0,030 0,030 0,030 % max 0,035 0,035 0,035 0,035 0,035 0,035 0,035 0,035 0,030 0,030 0,030 0,030 0,030 0,030 0,030 0,030 0,030 Cr % max 0,20 0,20 0,20 0,20 0,20 0,20 0,20 0,20 0,20 0,20 0,20 0,20 0,15 0,15 0,15 0,15 0,15 Ni % max 0,25 0,25 0,25 0,25 0,25 0,25 0,25 0,25 0,25 0,25 0,25 0,25 0,20 0,20 0,20 0,20 0,20 Mo % max 0,05 0,05 0,05 0,05 0,05 0,05 0,05 0,05 0,05 0,05 0,05 0,05 0,05 0,05 0,05 0,05 0,05 Cu e % max 0,30 0,30 0,30 0,30 0,30 0,30 0,30 0,30 0,30 0,30 0,30 0,30 0,25 0,25 0,25 0,25 0,25 Al f % max 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 may not be added intentionally to the steel without the agreement o f the purchaser, except those intended for finishing the heat By agreement at the time o f ordering, the grades can contain additions (commonly termed microalloying additions) o f Cr and V The content o f Cr is up to 0,30 % and the content o f V is 0,05 % to 0,10 % a Non-alloy quality steel for general purposes shall comply with unalloyed quality steel in ISO 4948-2 b For steel grades C26D to C92D, the carbon range may be enlarged by lowering the minimum by 0,01 % and by increasing the maximum by 0,01%, by agreement between the supplier and purchaser c For wire rod intended for galvanization, the required lower limit o f silicon content should be specified at the time o f ordering By agreement at the time o f ordering, the maximum silicon level for grades C4D to C20D may be further restricted d For grades from C15D to C92D, a different range from the one indicated in Table 1, but of the same amplitude, can be agreed at the time of ordering, with a maximum not exceeding 1,20 % and a minimum not lower than 0,30 % e A maximum copper content o f 0,20 % may be agreed at the time o f ordering For steel grades C48D to C92D, Cu + Sn shall be ≤0,25 % f By agreement at the time o f ordering, the value for aluminium can be fixed at 0,01 % to 0,06 % In such cases, the value o f silicon can be fixed at ≤0,10 % on request © ISO 2017 – All rights reserved ISO 16120-2:2017(E) Table (continued) Heat analysis P S Steel Cb Si c Mnd C60D C62D C66D C68D C70D C72D C76D C78D C80D C82D C86D C88D C92D 0,58 to 0,63 0,60 to 0,65 0,63 to 0,68 0,65 to 0,70 0,68 to 0,73 0,70 to 0,75 0,73 to 0,78 0,75 to 0,80 0,78 to 0,83 0,80 to 0,85 0,83 to 0,88 0,85 to 0,90 0,90 to 0,95 0,10 to 0,30 0,10 to 0,30 0,10 to 0,30 0,10 to 0,30 0,10 to 0,30 0,10 to 0,30 0,10 to 0,30 0,10 to 0,30 0,10 to 0,30 0,10 to 0,30 0,10 to 0,30 0,10 to 0,30 0,10 to 0,30 0,50 to 0,80 0,50 to 0,80 0,50 to 0,80 0,50 to 0,80 0,50 to 0,80 0,50 to 0,80 0,50 to 0,80 0,50 to 0,80 0,50 to 0,80 0,50 to 0,80 0,50 to 0,80 0,50 to 0,80 0,50 to 0,80 grade a % % NOTE Elements not included in Table % % max 0,030 0,030 0,030 0,030 0,030 0,030 0,030 0,030 0,030 0,030 0,030 0,030 0,030 % max 0,030 0,030 0,030 0,030 0,030 0,030 0,030 0,030 0,030 0,030 0,030 0,030 0,030 Cr % max 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 Ni % max 0,20 0,20 0,20 0,20 0,20 0,20 0,20 0,20 0,20 0,20 0,20 0,20 0,20 Mo % max 0,05 0,05 0,05 0,05 0,05 0,05 0,05 0,05 0,05 0,05 0,05 0,05 0,05 Cu e % max 0,25 0,25 0,25 0,25 0,25 0,25 0,25 0,25 0,25 0,25 0,25 0,25 0,25 Al f % max 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 may not be added intentionally to the steel without the agreement o f the purchaser, except those intended for finishing the heat By agreement at the time o f ordering, the grades can contain additions (commonly termed microalloying additions) o f Cr and V The content o f Cr is up to 0,30 % and the content o f V is 0,05 % to 0,10 % a Non-alloy quality steel for general purposes shall comply with unalloyed quality steel in ISO 4948-2 b For steel grades C26D to C92D, the carbon range may be enlarged by lowering the minimum by 0,01 % and by increasing the maximum by 0,01%, by agreement between the supplier and purchaser c For wire rod intended for galvanization, the required lower limit o f silicon content should be specified at the time o f ordering By agreement at the time o f ordering, the maximum silicon level for grades C4D to C20D may be further restricted d For grades from C15D to C92D, a different range from the one indicated in Table 1, but of the same amplitude, can be agreed at the time of ordering, with a maximum not exceeding 1,20 % and a minimum not lower than 0,30 % e A maximum copper content o f 0,20 % may be agreed at the time o f ordering For steel grades C48D to C92D, Cu + Sn shall be ≤0,25 % f By agreement at the time o f ordering, the value for aluminium can be fixed at 0,01 % to 0,06 % In such cases, the value o f silicon can be fixed at ≤0,10 % on request Table — Permissible deviation in the product analysis in relation to the specified heat analysis Elements C Si Mn P and S Steel grade C4D to C20D C26D to C82D C86D to C92D All grades All grades All grades Permissible deviation in product analysis % ±0,02 ±0,03 ±0,04 ±0,04 ±0,06 +0,005 NOTE I f agreed at the time o f ordering, the permissible deviation between product analysis and heat analysis for carbon can be in relation to the actual heat analysis instead o f the specified range © ISO 2017 – All rights reserved ISO 61 0-2 : 01 7(E) 5.3 Internal soundness and surface quality The wire rod shall have no internal and/or surface discontinuities, such as shrink holes, cracks, folds, i nc ru s tation s , no tche s , s c ab s or rol l i ng bu rrs , wh ich may b e de tri menta l to its corre c t u s e 5.4 Depth o f surface discontinuities T he wi re ro d s l l no t have a ny s u r face d i s conti nuitie s with dep th s gre ater than tho s e shown i n T he s e l i m it va lue s app ly Table agreed upon ap p l i e s to for ro u nd Table the te s t cho s en i n accorda nce with I S O 161 -1 : —, 9.4 and w i re ro d o n l y; m a x i mu m d i s co nti nu i t y le ve l s fo r o ther s h ap e s m ay b e Table — Limit values for the depth o f sur face discontinuities o f round wire rod Dimensions in millimetres Nominal diameter dN ≤ dN ≤ dN > 12 Maximum permissible depth o f surdiscontinuities — radial depth a Maximum permissible actual length o f sur face discontinuities b,c 0,20 0,25 0,25 0,30 face The depth of surface discontinuities is measured from the actual surface of the product in a radial direction The actual measured length of the discontinuities See ISO 16120-1:—, Annex B for an explanation of terms a b c T he te s t fo r and purchaser 5.5 the m a xi mu m ac tu a l len g th o f s u r face d i s co nti nu itie s m ay b e s kip p e d b y a gre eme nt b e twe e n the s up p l ie r Core segregation Unless otherwise agreed at the time of ordering, not more than 20 % of test pieces inspected from steel grade C60D, or those with a higher carbon content, shall be Class 4, and none shall be of Class (see ISO 16120-1:—, Annex A) However, it is recommended that this evaluation be done as part of a qua l ity s ys tem 5.6 Tensile strength For grade s s p e c i fie d b y chem ic a l comp o s ition, and i f re que s te d b y the pu rchas er at the ti me o f orderi ng , the supplier shall provide guidance values of tensile strength Clause The ultimate tensile strength of the wire rod shall fall within the limits of permissible variation given in Tables and for the designated strength level The ranges given in Table are referred to as Option A For certain applications, the ranges given in Table f and order For grade s s p e c i fie d b y ten s i le s treng th , the pu rcha s er s l l u s e the de s ignation s de s c rib e d i n (O p tio n B) may b e agre e d at the ti me o enqu i r y Table — Permissible variation for ultimate tensile strength o f the wire rod (MPa), Option A Steel grade C4D to C20D C26D to C60D C62D to C92D Batch mean Coil-to-coil and within coil variation (in relation to the specified strength level) (in relation to the actual batch mean) ±40 ±50 ±60 ±40 ±50 ±60 © ISO 2017 – All rights reserved ISO 61 0-2 : 01 7(E) Table — Permissible variation for ultimate tensile strength o f the wire rod (MPa), Option B Steel grade C4D to C20D C26D to C60D C62D to C92D 5.7 Batch mean Coil-to-coil and within coil variation (in relation to the specified strength level) (in relation to the actual batch mean) ±70 ±90 ±110 ±40 ±50 ±60 Scale characteristics T he s c a le ch arac teri s tics may b e agre e d b e twe en the s uppl ier and purch as er T he s e may b e s p e ci fie d as quantity o f s c a le and/or de s c a labi l ity 5.8 Mechanical damage The wire rod shall have no abrasive damage (the consequence of frictional contact between wire rod and wire rod, wire rod and concrete, or wire rod and steel) detrimental to its subsequent processing f f the supplier and purchaser Illustrative examples of mechanical damage are shown in ISO 16120-1:—, Annex C and end u s e Sta ndard s o accep tabi l ity relati ng to p erm i s s ible level s o © ISO 2017 – All rights reserved d amage may b e agre e d b e twe en ISO 16120-2:2017(E) Annex A (informative) Steel designations and designation o f comparable steel grades T h i s c u ment wi l l b e adop te d b y C E N without ch ange s T he e qu iva lent Eu rop e an s te el nu mb ers a re therefore listed in column of Table A.1 Table A.1 — Steel designations in accordance with this document and designation o f comparable steel grades in national or regional standards ISO 16120-2 Steel European designation C4D C7D C9D C10D C12D C15D C18D C20D a material no 1.0300 1.0313 1.0304 1.0310 1.0311 1.0413 1.0416 1.0414 C26D C32D C38D C42D 1.0415 1.0530 1.0516 1.0541 C48D C50D C52D C56D C58D C60D C62D C66D C68D C70D 1.0517 1.0586 1.0588 1.0518 1.0609 1.0610 1.0611 1.0612 1.0613 1.0615 JIS G 3505 Steel designation n/nr/ya SWRM6 SWRM8 SWRM10 SWRM12 SWRM15 SWRM17 SWRM20 SWRM22 SWRH27 SWRH32 SWRH37 SWRH42A SWRH42B SWRH47A SWRH47B nr y y y y y y SWRH52A SWRH52B SWRH57A SWRH57B SWRH62A SWRH62B SWRH67A SWRH67B D e vi atio n o f the chem ic a l a n a l ys i s ( he at a n a l ys i s) fro m GB/T 24242.2:2009 Steel n/nr/ya designation C4D C7D C9D C10D C12D C15D C18D C20D n nr nr nr nr C26D C32D C38D C42D nr nr nr nr nr nr nr nr nr nr C48D C50D C52D C56D C58D C60D C62D C66D C68D C70D y y y y y y y y y y y y y y y y y y y y y y th at g i ve n i n th i s c u me nt: n = no ; n r = no t re le va nt; y = rele va nt © ISO 2017 – All rights reserved ISO 16120-2:2017(E) Table A.1 (continued) ISO 16120-2 Steel European designation material no a C72D C76D C78D C80D C82D C86D C88D C92D 1.0617 1.0614 1.0620 1.0622 1.0626 1.0616 1.0628 1.0618 JIS G 3505 Steel designation n/nr/ya SWRH72A SWRH72B nr nr nr SWRH77A SWRH77B SWRH82A SWRH82B D e vi atio n o f the che m ic a l a n a l ys i s ( he at a n a l ys i s) nr fro m GB/T 24242.2:2009 Steel n/nr/ya designation C72D C76D C78D C80D C82D C86D C88D C92D y y y y y y y y th at g i ve n i n th i s c u ment: n = no ; n r = no t re le va nt; y = re le va nt © ISO 2017 – All rights reserved ISO 61 0-2 : 01 7(E) Bibliography [1] [2] [3] ISO/TS 4949, JIS G 3505, Low carbon steel wire rods GB/T 24242.2:2009, Steel n am es based on letter symbols Non-alloy steel wire rod for conversion to wire — Part 2: Specific requirem ents for gen eral-purpose wire rod © ISO 2017 – All rights reserved ISO 61 0-2 : 01 7(E) ICS 77.140.60 Price based on pages © ISO 2017 – All rights reserved