1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 10257-1:2011Zinc or zinc alloy coatednon-alloy steel wire forarmouring either power cablesor telecommunication cablesPart 1: Land cablesBS EN 10257-1:2011 BRITISH STANDARDN
2、ational forewordThis British Standard is the UK implementation of EN 10257-1:2011.It supersedes BS EN 10257-1:1998 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee ISE/106, Wire Rod and Wire.A list of organizations represented on this committee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 beobt
3、ained 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 64506 8ICS 29.060.20; 77.140.65Compliance with a British Standard cannot confer immunity fromlegal obliga
4、tions.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 10257-1:2011EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 10257-1 October 2011 ICS 77.140.65 Supersedes EN
5、 10257-1:1998English Version Zinc or zinc alloy coated non-alloy steel wire for armouring either power cables or telecommunication cables - Part 1: Land cablesFils en acier non alli revtus de zinc ou dalliage de zinc pour larmure des cbles destins au transport dnergie ou aux tlcommunications - Parti
6、e 1: Cbles terrestres Mit Zink oder Zinklegierung berzogener unlegierter Stahldraht zur Bewehrung von Strom- und Fernmeldekabeln - Teil 1: Erdverlegte Kabel This European Standard was approved by CEN on 10 September 2011. CEN members are bound to comply with the CEN/CENELEC Internal Regulations whic
7、h 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. This Eur
8、opean 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 members a
9、re 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, Spain, Swed
10、en, 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 Members.
11、Ref. No. EN 10257-1:2011: EBS EN 10257-1:2011EN 10257-1:2011 (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 Mechanic
12、al properties .67.1.1 Tensile strength and elongation 67.1.2 Torsion 67.2 Nominal diameter and tolerances 67.3 Coating, adhesion and surface finish 77.4 Electrical resistance 78 Sampling and testing 89 Inspection and documentation .810 Methods of tests 810.1 Diameter measurement .810.2 Tensile and e
13、longation tests 910.3 Torsion test 910.4 Coating test 910.5 Electrical resistance 911 Packing and identification 9Bibliography . 10BS EN 10257-1:2011EN 10257-1:2011 (E) 3 Foreword This document (EN 10257-1:2011) has been prepared by Technical Committee ECISS/TC 106 “Wire rod and wires”, the secretar
14、iat 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. Attention is drawn to
15、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 10257-1:1998. The European Standard will comprise the following parts: Part 1: L
16、and 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, France, Germ
17、any, 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 10257-1:2011EN 10257-1:2011 (E) 4 1 Scope This European Standard specifies requirements fo
18、r the properties of non-alloy carbon zinc or zinc alloy coated steel wire used primarily for the armouring of either subterranean land power or telecommunication cables. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated refere
19、nces, only 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
20、 products General Part 1: Test methods 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: Zinc or zinc alloy coatings EN ISO 16120-1, Non-all
21、oy 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, Non-alloy steel wire rod for conversion to wire -
22、 Part 3: Specific requirements for rimmed and rimmed substitute, low-carbon steel wire rod (ISO 16120-3:2011) IEC 60468, Method of measurement of resistivity of metallic materials 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 coil reel spoo
23、l 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) designation (see Cl
24、ause 5); BS EN 10257-1:2011EN 10257-1:2011 (E) 5 b) quantity in appropriate units; c) 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:
25、 h) coating uniformity; i) electrical resistance; j) identity for traceability. 5 Designation The steel wire for land cable shall be designated by: a) number of this European Standard i.e. EN 10257-1; b) nominal wire diameter; c) wire coating type to EN 10244-2. EXAMPLE Steel wire for land cable to
26、EN 10257-1, of nominal wire diameter of 0,45 mm, zinc coated to EN 10244-2:2009, class A: EN 10257-1-0,45 - 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
27、 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 The coils as delivered, shall contain no joints other than properly dressed welds, i.e. the original wire diameter shall be retained. BS EN
28、10257-1:2011EN 10257-1:2011 (E) 6 7 Requirements 7.1 Mechanical properties 7.1.1 Tensile strength and elongation The tensile strength and elongation of the wires shall be in accordance with Table 1. The variation within one batch shall not be more than 150 N/mm2. Table 1 Mechanical properties Nomina
29、l wire diameter Tensile strength Elongation after fracture mm N/mm2% d 0,70 320 to 500 7,5 0,70 0,90 340 to 500 10,0 7.1.2 Torsion The wire shall withstand without breaking, not less than the minimum number of turns given in Table 2. These minima are based on 40 turns in a gauge length of 100 d, whe
30、re d is greater than 0,71 and less than or equal to 4,00 mm, and on 27 turns in 100 d for sizes equal or smaller than 0,71 mm where d is the wire diameter. Table 2 Minimum number of turns to fracture Nominal wire diameter Gauge length Minimum number of turns mm mm 0,30 50 450,45 75 45 0,71 75 420,90
31、 75 33 1,25 75 241,60 150 37 2,00 150 302,50 150 24 3,15 150 194,00 150 15 7.2 Nominal diameter and tolerances The preferred nominal diameters of finished wire and the tolerances on diameter are given in Table 3. Other diameters may be used, e.g. those specified in IEC 60502-1 or in IEC 60502-2. NOT
32、E The tolerances correspond to T1 of EN 10218-2:1996, Table 1. BS EN 10257-1:2011EN 10257-1:2011 (E) 7 It is recognised that thick coatings, 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
33、.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. Table 3 Nominal diameters and tolerances Nominal wire diameter Tolerance on diameter mm mm 0,30 0,025 0,45 0,025 0,71 0,030 0,90 0,035 1,25 0
34、,040 1,60 0,045 2,00 0,050 2,50 0,060 3,15 0,070 4,00 0,070 7.3 Coating, adhesion and surface 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 adhe
35、rence test of EN 10244-1 and EN 10244-2. If required, the uniformity shall conform to EN 10244-2. NOTE 1 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 usuall
36、y supplied as zinc or zinc alloy coated. Additionally further coatings with a special finish (e.g. wax or surface compatible with bitumen) may be supplied by agreement between manufacturer and customer. NOTE 2 Where the design of the cable allows, as specified in the relevant cable product standard,
37、 other zinc or zinc alloy classes may be specified. 7.4 Electrical resistance Where requested, the electrical resistance of the armour shall be determined. This result, expressed in ohm per kilometre of wire, shall not exceed the appropriate value given in Table 4. If the d.c. resistance of the coat
38、ed wire is measured at a room temperature (T/C) other than 20 C, it shall be corrected to 20 C using the temperature coefficient (1 + 0,005 (T-20) C). BS EN 10257-1:2011EN 10257-1:2011 (E) 8 Table 4 Maximum electrical resistance values Nominal wire diameter Maximum d.c.aresistance at 20 Cbmm /km 0,3
39、0 1 952,30 0,45 867,690,71 348,560,90 216,92 1,25 112,451,60 68,642,00 43,932,50 28,11 3,15 17,714,00 10,98aBased on an equivalent resistivity of 13,8 10-8ohm.m. For intermediate sizes, values of maximum resistance should be calculated using this value. bIf the d.c. resistance of the coated wire is
40、measured at a room temperature (T/C) other than 20 C, it shall be corrected to 20 C using the temperature coefficient (1 + 0,005 (T-20) C). 8 Sampling and testing The manufacturer shall be responsible for the control of product quality by the application of statistical methods of sampling and analys
41、is of results or, alternatively, by sampling and testing for the agreed quality characteristics at a rate of one roll/reel in 50. NOTE Material covered by this European Standard may in time exhibit changes in mechanical properties after manufacture, particularly in tensile strength and elongation. T
42、hese changes result from a phenomenon known as strain ageing or strain age hardening and lead to an increase in tensile strength and a decrease in elongation compared to the wire immediately after manufacture. It is customary to carry out tests immediately after manufacture. At ordinary temperatures
43、, strain ageing may proceed slowly. Therefore, results of tests performed by the purchaser may be at variance with those reported by the supplier. 9 Inspection and documentation Unless otherwise agreed at time of enquiry and order, non-specific testing and inspection and inspection documentation sha
44、ll be provided according to the requirements of EN 10204 and EN 10021. 10 Methods of tests 10.1 Diameter measurement The actual coated diameter of the test piece shall be determined with a micrometer by taking two measurements at right angles to each other at three places, choosing smooth zones, alo
45、ng a length of not BS EN 10257-1:2011EN 10257-1:2011 (E) 9 less than 250 mm. The average of the six measurements shall be taken as the actual diameter of the coated wire test piece. 10.2 Tensile and elongation tests 10.2.1 The test shall be carried out in accordance with EN 10218-1 using a test leng
46、th between grips sufficient to accommodate a gauge length equal to 100 d (diameter) for wire diameters from 0,30 mm to 2,00 mm, and equal to 250 mm for wire diameters 2,50 mm to 4,00 mm. 10.2.2 The tensile strength shall be calculated on the actual diameter of the coated wire, as determined in 10.1.
47、 10.2.3 The elongation shall be measured on the gauge length after the fractured ends have been fitted together. Where the fracture during testing does not occur in the middle 80 % portion of the gauge length and the elongation specification is not met, it is permissible to repeat the test. 10.3 Tor
48、sion test 10.3.1 The test shall be carried out in accordance with EN 10218-1. 10.3.2 The gauge length between vices shall be as given in Table 2. 10.4 Coating test The wire shall be tested in accordance with the methods of test given in EN 10244-1 and EN 10244-2. 10.5 Electrical resistance Electrica
49、l resistance shall be measured in accordance with IEC 60468. 11 Packing and identification The wire manufacturer shall ensure that every coil is securely tied and shall attach to every coil a suitable label or labels on which shall be shown the wire manufacturers name, the coil or batch number, the size of the wire, the number of this European Standard, and such other markings as may be agreed upo
