1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 10257-2:2011Zinc or zinc alloy coatednon-alloy steel wire forarmouring either power cablesor telecommunication cablesPart 2: Submarine cablesBS EN 10257-2:2011 BRITISH STAN
2、DARDNational forewordThis British Standard is the UK implementation of EN 10257-2:2011.It supersedes BS EN 10257-2:1998 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee ISE/106, Wire Rod and Wire.A list of organizations represented on this committee can
3、beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2011ISBN 978 0 580 64507 5ICS 29.060.20; 77.140.65Compliance with a British Standard cannot confer immunity fromlegal o
4、bligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 November 2011.Amendments issued since publicationDate Text affectedBS EN 10257-2:2011EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 10257-2 October 2011 ICS 77.140.65 Supersed
5、es EN 10257-2:1998English Version Zinc or zinc alloy coated non-alloy steel wire for armouring either power cables or telecommunication cables - Part 2: Submarine cables Fils en acier non alli revtus de zinc ou dalliage de zinc pour larmure des cbles destins au transport dnergie ou aux tlcommunicati
6、ons - Partie 2: Cbles sous-marins Mit Zink oder Zinklegierung berzogener unlegierter Stahldraht zur Bewehrung von Strom- und Fernmeldekabeln- - Teil 2: Unterseekabel This European Standard was approved by CEN on 10 September 2011. CEN members are bound to comply with the CEN/CENELEC Internal Regulat
7、ions which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
8、 This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN
9、members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Sp
10、ain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national
11、Members. Ref. No. EN 10257-2:2011: EBS EN 10257-2:2011EN 10257-2:2011 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Terms and definitions .44 Information to be supplied by the purchaser .45 Designation 56 Manufacture 56.1 Non-alloy steel .56.2 Welds in coils .57 Requirements .67.1
12、 Mechanical properties .67.1.1 Tensile strength .67.1.2 Elongation 67.1.3 Torsion 67.1.4 Steel ductility wrap test .67.2 Nominal diameters and tolerances 67.3 Coating, adhesion and surface finish 98 Sampling and testing 99 Inspection and documentation .910 Methods of test 910.1 Diameter measurement
13、.910.2 Tensile and elongation tests 910.3 Torsion test 910.4 Steel ductility wrap test 1010.5 Coating test . 1011 Packing and identification . 10BS EN 10257-2:2011EN 10257-2:2011 (E) 3 Foreword This document (EN 10257-2:2011) has been prepared by Technical Committee ECISS/TC 106 “Wire rod and wires”
14、, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by April 2012, and conflicting national standards shall be withdrawn at the latest by April 2012. Attentio
15、n is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 10257-2:1998. The European Standard will comprise the following pa
16、rts: Part 1: Land cables; Part 2: Submarine cables. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland
17、, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 10257-2:2011EN 10257-2:2011 (E) 4 1 Scope This European Standard specifies r
18、equirements for the properties of non-alloy zinc or zinc alloy coated steel wires used for the armouring of either submarine power or telecommunication cables. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only
19、 the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 10021, General technical delivery conditions for steel products EN 10204, Metallic products Types of inspection documents EN 10218-1, Steel wire and wire products
20、General Part 1: Test methods EN 10218-2:1996, Steel wire and wire products General Part 2: Wire dimensions and tolerances EN 10244-1, Steel wire and wire products Non-ferrous metallic coatings on steel wire Part 1: General principles EN 10244-2:2009, Steel wire and wire products Non-ferrous metallic
21、 coatings on steel wire Part 2: Zinc or zinc alloy coatings EN ISO 16120-1, Non-alloy steel wire rod for conversion to wire - Part 1: General requirements (ISO 16120-1:2011) EN ISO 16120-2, Non-alloy steel wire rod for conversion to wire - Part 2: Specific requirements for general-purpose wire rod (
22、ISO 16120-2:2011) EN ISO 16120-3, Non-alloy steel wire rod for conversion to wire - Part 3: Specific requirements for rimmed and rimmed substitute, low-carbon steel wire rod (ISO 16120-3:2011) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 c
23、oil reel spool continuous length of wire wound in approximately concentric rings 3.2 batch quantity of finished wire presented for examination and tested at any one time 4 Information to be supplied by the purchaser When ordering wire to this European Standard, the purchaser shall specify: a) the de
24、signation (see Clause 5); BS EN 10257-2:2011EN 10257-2:2011 (E) 5 b) the quantity in appropriate units; c) the unit weight of coils (kg); d) instructions for strapping and packaging; e) surface condition (see Clause 7.3); f) agreed quality characteristics (see Clause 8); g) inspection document requi
25、rements. And if required: h) coating uniformity; i) identity for traceability. 5 Designation The steel wire for submarine cable shall be designated by: a) number of this European Standard i.e. EN 10257-2; b) tensile strength grade; c) nominal wire diameter; d) wire coating type. EXAMPLE Wire for sub
26、marine cable to EN 10257-2, grade 85, 2,24 mm diameter zinc coated to EN 10244-2:2009, class A. EN 10257-2 - 85 - 2,24 Zn EN 10244-2:2009, class A. 6 Manufacture 6.1 Non-alloy steel The steel wire shall be cold drawn from plain carbon steel rod produced to EN ISO 16120-1, EN ISO 16120-2 or EN ISO 16
27、120-3 and capable of achieving the physical properties required by this standard. The steel rod shall be capable of being satisfactorily butt-welded. 6.2 Welds in coils For grades 34 and 65 only, one dressed weld per coil shall be allowed after drawing and before coating. Such a weld shall not be le
28、ss than 100 m from either end of the coil. No weld shall be made after drawing on grades 85, 105, 125, 145 and 165. BS EN 10257-2:2011EN 10257-2:2011 (E) 6 7 Requirements 7.1 Mechanical properties 7.1.1 Tensile strength The tensile strength of the wires measured on the actual diameter shall be as gi
29、ven in Table 1 for the appropriate grade. Table 1 Tensile strength of wire grades Grade Tensile strength range N/mm234 340 Rm 540 65 650 Rm 850 85 850 Rm 1 050 105 1 050 Rm 1 250 125 1 250 Rm 1 450 145 1 450 Rm 1 650 165 1 650 Rm 1 900 NOTE 1 If other minima are ordered a 200 N/mm2range shall apply.
30、 NOTE 2 If tensile strength minima are ordered other than those specified and the tensile strength of the ordered grade is less than or equal to 100 N/mm2above the minimum tensile strength of the nearest lower specified grade then the properties of that grade shall apply. If the minimum tensile stre
31、ngth of the required grade is more than 100 N/mm2above the minimum tensile strength of the nearest lower specified grade then the higher grade properties shall apply. 7.1.2 Elongation Elongation measured after fracture shall be not less than that given in Tables 2, 3 or 4 for the grade and diameter
32、of wire being tested. 7.1.3 Torsion When tested in accordance with 10.3.1, the wire shall withstand without breaking not less than the minimum number of turns given in Tables 2, 3 and 4 for the wire being tested. 7.1.4 Steel ductility wrap test When subjected to a steel ductility wrap test, test sam
33、ples of grade 85, 105, 125, or 145 shall withstand being closely wrapped by 8 turns around their own diameter. A test sample of grade 165 shall withstand being closely wrapped around two times its own diameter. No sign of fracture of the base metal shall be evident. 7.2 Nominal diameters and toleran
34、ces The preferred nominal diameters of finished wire and the tolerances on diameter shall be as specified in Tables 2, 3 and 4, depending on the tensile grades. BS EN 10257-2:2011EN 10257-2:2011 (E) 7 The tolerances correspond to T1 of EN 10218-2:1996, Table 1. It is recognized that thick coatings,
35、obtained in the hot dip process, may not be entirely free from surface irregularities, and, provided the latter do not go beyond the limits of good practice (i.e. isolated and not of a repetitive nature), they shall not be a cause for rejection. Persistent lumpy galvanizing or bambooing shall be cau
36、se for rejection. Table 2 Preferred nominal diameters, tolerances and mechanical properties of grade 34 steel wire Nominal wire diameter Tolerance on diameter Minimum elongation on gauge length Torsion test minimum number of turnsaon gauge length L0 = 250 mm L0 = 150 mm mm mm % 3,35 0,07 18 4,00 0,0
37、7 154,25 0,08 14 4,50 0,08 10 134,75 0,08 13 5,00 0,08 125,30 0,09 11 5,6 0,09 11 6,0 0,09 106,3 0,09 10 10 6,7 0,10 9 7,1 0,10 8 7,5 0,10 8 8,0 0,10 10 8 8,5 0,12 7 a Based on 40 turns in a length of 100 wire diameters. NOTE 1 For intermediate sizes the properties to be achieved shall be those for
38、the next larger size listed. NOTE 2 Grade 34 steel wire may in time exhibit changes in mechanical properties after manufacture, particularly tensile strength and elongation. These changes result from a phenomenon known as strain ageing or strain age hardening, and lead to an increase in tensile stre
39、ngth and a decrease in elongation, compared to the wire immediately after coating with zinc. It is customary to carry out tests immediately after manufacture. At ordinary temperatures, strain ageing may proceed slowly. Therefore, results of tests performed by the purchaser may be at variance with th
40、ose reported by the supplier. BS EN 10257-2:2011EN 10257-2:2011 (E) 8 Table 3 Preferred nominal diameters, tolerances and mechanical properties of grade 65 steel wire Nominal diameter Tolerance on diameter Minimum elongation on 250 mm gauge length Torsion test minimum number of turnsaon 150 mm gauge
41、 length mm mm % 2,65 0,06 5 12 3,35 0,07 6 10 4,25 0,08 6 8 5,00 0,08 6 7 aBased on 23 turns in a length of 100 wire diameters. NOTE For intermediate sizes the properties to be achieved are those of the next larger size listed. Table 4 Preferred nominal diameters, tolerances and mechanical propertie
42、s of grades 85, 105, 125, 145 and 165 steel wire Nominal wire diameter Tolerance on diameter Minimum elongation on 250 mm gauge length Torsion test on 150 mm gauge length mm mm % Grade Minimum number of turnsa85 105 125 145 165 grades 85 and 105 grade 125 grade 145 grade 165 2,12 5 4,5 4 3 2,5 16 14
43、 12 10 2,24 0,06 5 4,5 4 3 2,5 15 13 11 9 2,36 5 4,5 4,5 3 2,5 15 13 11 9 2,50 5 5 5 3 2,5 14 12 10 8 2,65 0,06 5 5 5 3,5 3 13 11 9 8 2,80 5 5 5 3,5 3 12 11 9 7 3,15 5 5 5 3,5 3 11 9 8 7 3,35 0,07 5 5 5 4 3,5 10 9 7 6 3,55 5 5 5 4 3,5 10 8 7 6 4,00 5 5 5 4 4 9 7 6 4 5,00 0,08 5 5 5 4 4 8 6 5 4 5,30
44、0,09 5 5 - - - 7 - - - 6,00 5 5 - - - 6 - - - aBased on 23 turns in a length of 100 wire diameters for grades 85 + 105. Based on 20 turns in a length of 100 wire diameters for grade 125. Based on 17 turns in a length of 100 wire diameters for grade 145. Based on 14 turns in a length of 100 wire diam
45、eters for grade 165. NOTE For intermediate sizes the elongation value to be achieved shall be those of the next larger size listed. But for torsion values they shall be proportionally based on aand rounded to the next lower figure.BS EN 10257-2:2011EN 10257-2:2011 (E) 9 7.3 Coating, adhesion and sur
46、face finish The wire shall be zinc or zinc alloy coated either by the hot dip or the electrolytic process, in accordance with EN 10244-2:2009 (Table 1 and Table 2), class A. The coating shall conform to the adherence test of EN 10244-1 and EN 10244-2. If required, the uniformity shall conform to EN
47、10244-2. NOTE The finished wire should be free from any defects likely to cause breakages in subsequent manufacturing processes or service, or likely to adversely affect the finished cables. The wire is usually supplied as zinc or zinc alloy coated. Additionally further coatings with a special finis
48、h (e.g. wax or surface compatible with bitumen) may be supplied by agreement between manufacturer and customer. 8 Sampling and testing The manufacturer shall be responsible for the control of product quality by the application of statistical methods of sampling and analysis of results or, alternativ
49、ely, by sampling and testing for the agreed quality characteristics at a rate of one roll/reel in 50. 9 Inspection and documentation Unless otherwise agreed at time of enquiry and order, non-specific testing and inspection and inspection documentation shall be provided according to the requirements of EN 10204 and EN 10021. 10 Methods of test 10.1 Diameter measurement The diameter
