1、February 2012 Translation by DIN-Sprachendienst.English price group 8No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).IC
2、S 77.140.65!$yf b) Clause 4 “Information to be supplied by the purchaser” has been revised; c) the standard has been editorially revised. Previous editions DIN EN 10257-2: 1998-07 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 10257-2 October 2011 ICS 77.140.65 Supersedes EN 10257-2:1998Englis
3、h 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 tlcommunications - Partie 2: Cbles so
4、us-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 Regulations which stipulate the
5、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. This European Standard e
6、xists 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 members are the national
7、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, Spain, Sweden, Switzerland
8、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 Members. Ref. No. EN 1025
9、7-2:2011: EEN 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 Mechanical properties .67.1.1 Tensile stre
10、ngth .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 .910.2 Tensile and elongation tests 910.3 T
11、orsion test 910.4 Steel ductility wrap test 1010.5 Coating test . 1011 Packing and identification . 10DIN EN 10257-2:2012-02 EN 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”, the secretariat of which is held by
12、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. Attention is drawn to the possibility that som
13、e 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 parts: Part 1: Land cables; Part 2: Subm
14、arine 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, France, Germany, Greece, Hungary, Ic
15、eland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. DIN EN 10257-2:2012-02 EN 10257-2:2011 (E) 4 1 Scope This European Standard specifies requirements for the properties of
16、 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 the edition cited applies. For u
17、ndated 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 General Part 1: Test methods EN 1
18、0218-2:1996, 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 coatings on steel wire Part 2: Z
19、inc 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 (ISO 16120-2:2011) EN ISO 16120-3,
20、 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 coil reel spool continuous length
21、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 designation (see Clause 5); DIN EN
22、10257-2:2012-02 EN 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 requirements. And if required: h)
23、 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 submarine cable to EN 10257-2,
24、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 16120-3 and capable of achievi
25、ng 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 less than 100 m from either en
26、d of the coil. No weld shall be made after drawing on grades 85, 105, 125, 145 and 165. DIN EN 10257-2:2012-02 EN 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 given in Table 1 for the
27、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. NOTE 2 If tensile stre
28、ngth 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 strength of the required gr
29、ade 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 of wire being tested. 7
30、.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 samples of grade 85, 105,
31、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 tolerances The preferred nomin
32、al diameters of finished wire and the tolerances on diameter shall be as specified in Tables 2, 3 and 4, depending on the tensile grades. DIN EN 10257-2:2012-02 EN 10257-2:2011 (E) 7 The tolerances correspond to T1 of EN 10218-2:1996, Table 1. It is recognized that thick coatings, obtained in the ho
33、t 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 cause for rejection.
34、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 0,07 154,25 0,08 14 4
35、,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 the next larger si
36、ze 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 strength and a decreas
37、e 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 those reported by th
38、e supplier. DIN EN 10257-2:2012-02 EN 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 length mm mm
39、 % 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 properties of grades 8
40、5, 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 12 10 2,24 0
41、,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 0,09 5 5 - -
42、- 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 diameters for gra
43、de 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.DIN EN 10257-2:2012-02 EN 10257-2:2011 (E) 9 7.3 Coating, adhesion and surface fin
44、ish 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 10244-2.
45、 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 finish (e.g.
46、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, alternatively, by
47、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 10
48、204 and EN 10021. 10 Methods of test 10.1 Diameter measurement The diameter of the zinc or zinc alloy coated test piece shall be determined with a micrometer by taking two measurements at right angles to each other at three places, choosing smooth zones, along a length of not less than 250 mm. The a
49、verage of the six measurements shall be taken as the actual diameter of the galvanized wire test piece. 10.2 Tensile and elongation tests 10.2.1 The test shall be carried out in accordance with EN 10218-1, with a test length between the grips sufficient to accommodate a gauge length of 250 mm. 10.2.2 The tensile strength shall be calculated on the actual diameter of the coated wir
