1、March 2012 Translation by DIN-Sprachendienst.English price group 9No 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).ICS 7
2、7.140.65!$zC=“1873226www.din.deDDIN EN 10218-1Steel wire and wire products General Part 1: Test methodsEnglish translation of DIN EN 10218-1:2012-03Stahldraht und Drahterzeugnisse Allgemeines Teil 1: PrfverfahrenEnglische bersetzung von DIN EN 10218-1:2012-03Fils et produits trfils en acier Gnralits
3、 Partie 1: Mthodes dessaiTraduction anglaise de DIN EN 10218-1:2012-03SupersedesDIN EN 10218-1:1994-05www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 14 pages02.12 DIN EN 10218-1:2012-03 2 A comma is used as the decimal marker. National
4、 foreword This standard has been prepared by Technical Committee ECISS/TC 106 “Wire rod and wires” (Secretariat: AFNOR, France). The responsible German body involved in its preparation was the Normenausschuss Eisen und Stahl (Iron and Steel Standards Committee), Working Committee NA 021-00-08-04 UA
5、Patentiert-gezogener oder vergteter Federstahldraht. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 7800 DIN ISO 7800 ISO 7801 DIN ISO 7801 ISO 7802 DIN ISO 7802 ISO 9649 DIN ISO 9649 Amendments This standard differs from DIN EN 10218-
6、1:1994-05 as follows: a) normative references have been updated; b) in Clause 14 “Wire cast measurement”, Figures 3, 4 and 5 have been revised to feature the axial, vertical and spiral displacements; c) in Clause 22 “Retests”, the illustrations of fractures occurring during torsion test (Table 1) ha
7、ve been revised; d) the standard has been editorially revised. Previous editions DIN EN 10218-1: 1994-05 National Annex NA(informative) Bibliography DIN ISO 7800, Metallic Materials Wire Simple torsion test DIN ISO 7801, Metallic Materials Wire Reverse bend test DIN ISO 7802, Metallic Materials Wire
8、 Wrapping test DIN ISO 9649, Metallic materials Wire Reverse torsion test EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 10218-1 January 2012 ICS 77.140.65 Supersedes EN 10218-1:1994English Version Steel wire and wire products - General - Part 1: Test methods Fils et produits trfils en acier -
9、 Gnralits - Partie 1 : Mthodes dessai Stahldraht und Drahterzeugnisse - Allgemeines - Teil 1: Prfverfahren This European Standard was approved by CEN on 3 September 2011. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
10、 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 exists in three official versions (E
11、nglish, 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 standards bodies of Austria, Belgiu
12、m, 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, Turkey and United Kingdom. Managem
13、ent Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 10218-1:2012: EEUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG EN 10218-1:2012
14、(E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Tensile test .53.1 General 53.2 Type of samples .53.3 Preparation of test piece .53.4 Cross-sectional area .53.5 Method of gripping 53.6 Tensile test on knotted wire .54 Simple torsion test.55 Reverse bend test 56 Wrapping test .67 Ben
15、d test .68 Reverse torsion test 69 Compression test.69.1 Purpose .69.2 Principle 610 Deep etch test 610.1 Purpose .610.2 Principle 611 Hardness test .712 Quench hardenability test .713 Fatigue test (bend and axial) 714 Wire cast measurement 714.1 General 714.2 Circular cast .814.3 Helix cast 914.3.1
16、 General 914.3.2 Method A .914.3.3 Method B .914.4 Spiral cast 1015 Artificial ageing . 1116 Decarburization test . 1117 Non-destructive tests . 1118 Grain size test . 1119 Segregation test 1120 Non-metallic inclusion test 1121 Chemical analysis . 1122 Retests . 11DIN EN 10218-1:2012-03 EN 10218-1:2
17、012 (E) 3 Foreword This document (EN 10218-1:2012) has been prepared by Technical Committee ECISS/TC 106 “Wire rod and wires”, 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 endorsem
18、ent, at the latest by July 2012, and conflicting national standards shall be withdrawn at the latest by July 2012. Attention 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 an
19、y or all such patent rights. This document supersedes EN 10218-1:1994. The standard will comprise the following parts: Part 1: Test methods; Part 2: Wire dimensions and tolerances. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are
20、bound to implement this European Standard: 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, Spai
21、n, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 10218-1:2012-03 EN 10218-1:2012 (E) 4 1 Scope This European Standard specifies the methods for the general testing of steel wire and wire products which have been cold worked, annealed or oil hardened and tempered and/or coated and are of
22、 constant cross section, either round, or special section. It includes tensile testing, torsion testing, reverse bend testing, wrapping test, bend test, reverse torsion test, compression test, deep etch test, hardness test, quench hardenability test, fatigue test, wire cast measurement, artificial a
23、geing, decarburization test, non-destructive tests, grain size tests, segregation test, non-metallic inclusion test and chemical analysis. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited ap
24、plies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 10021, General technical delivery conditions for steel products EN 10247, Micrographic examination of the non-metallic inclusion content of steels using standard pictures CEN/TR 10261,
25、 Iron and steel Review of available methods of chemical analysis EN ISO 377, Steel and steel products Location and preparation of samples and test pieces for mechanical testing (ISO 377:1997) EN ISO 643, Steels Micrographic determination of the apparent grain size (ISO 643:2003) EN ISO 3887, Steels
26、Determination of depth of decarburization (ISO 3887:2003) EN ISO 6506-1, Metallic materials Brinell hardness test Part 1: Test method (ISO 6506-1:2005) EN ISO 6508-1, Metallic materials Rockwell hardness test Part 1: Test method (scales A, B, C, D, E, F, G, H, K, N, T) (ISO 6508-1:2005) EN ISO 6508-
27、2, Metallic materials Rockwell hardness test Part 2: Verification and calibration of testing machines (scales A, B, C, D, E, F, G, H, K, N, T) (ISO 6508-2:2005) EN ISO 6508-3, Metallic materials Rockwell hardness test Part 3: Calibration of reference blocks (scales A, B, C, D, E, F, G, H, K, N, T) (
28、ISO 6508-3:2005) EN ISO 6892-1, Metallic materials Tensile testing Part 1: Method of test at room temperature EN ISO 6892-2, Metallic materials Tensile testing Part 2: Method of test at elevated temperature EN ISO 16120-1, Non-alloy steel wire rod for conversion to wire Part 1: General requirements
29、ISO 7800, Metallic materials Wire Simple torsion test ISO 7801, Metallic materials Wire Reverse bend test ISO 7802, Metallic materials Wire Wrapping test ISO 9649, Metallic materials Wire Reverse torsion test DIN EN 10218-1:2012-03 EN 10218-1:2012 (E) 5 3 Tensile test 3.1 General The tensile test sh
30、all be in accordance with EN ISO 6892-1 for testing at ambient temperature and EN ISO 6892-2 for testing at elevated temperature with the modifications specified in 3.2 to 3.6. NOTE For fine wires 0,5 mm diameter or less, any requirements for elongation values should not be mandatory but for informa
31、tion only. 3.2 Type of samples Samples shall be selected in accordance with EN ISO 377 using the full cross section, i.e. be an unmachined portion of wire. 3.3 Preparation of test piece The test piece shall be straightened with care so as not to cause damage (see EN ISO 6892-1 and EN ISO 377). 3.4 C
32、ross-sectional area In EN ISO 6892-1, the actual dimensions are used for tensile calculations but the nominal dimensions may be used if specified in the product standard or order. For non-circular wire, the original cross-sectional area may be determined from the mass of known length and its appropr
33、iate density. 3.5 Method of gripping To avoid breakages of the wire at the gripping zone, when testing the smaller diameters less than or equal to 1 mm, it is recommended the wire ends are wrapped round a circular bar or disc and fastened. 3.6 Tensile test on knotted wire The tensile test on knotted
34、 wire shall be carried out in accordance with EN ISO 6892-1 with a simple knot approximately in the middle of the test piece. 4 Simple torsion test The simple torsion test shall be in accordance with ISO 7800. In this event of initial failure, a retest shall be carried out (see EN 10021). Where poss
35、ible, the retest shall be conducted at a speed conforming to requirements of ISO 7800 (as a function of wire diameter). Where the fracture in the torsion test is required to be characterized, it shall be done on the basis of Table 1. NOTE For small diameter wires, it may not be possible to make a di
36、stinction between some of the classes in Table 1 (e.g. 2b versus 3b). 5 Reverse bend test The reverse bend test shall be in accordance with ISO 7801 with the following amendment for automatic counters. DIN EN 10218-1:2012-03 EN 10218-1:2012 (E) 6 If the testing machine has an automatic counter opera
37、ting at the limit stops, then the first bend down through 90 counts as one bend and the second bend is represented by the 180 bend in the opposite direction. The last figure obtained before fracture occurs counts as the number of bends. 6 Wrapping test The wrapping test shall be in accordance with I
38、SO 7802 and may be applied to assess coilability, ductility or the adherence of coatings as specified in the relevant product standard. 7 Bend test The bend test comprises bending the wire, which is allowed to move freely over a mandrel of specified diameter through a specified angle in one operatio
39、n at ambient temperature. Details will be given in the relevant product standard. 8 Reverse torsion test The reverse torsion test shall be in accordance with ISO 9649 with the following amendment: The test shall be used to detect surface defects as well as to assess ductility. 9 Compression test 9.1
40、 Purpose The purpose of the test is to detect surface defects. This test is not suitable for wires of less than 4,0 mm diameter. 9.2 Principle A straight test pieces of wire equal in length to 1 (or 1,5 times), the diameter of the wire is cut, with cuts at right angles to the wire axis. The test pie
41、ce is placed on a flat surface of a compression machine and compressed at room temperature in the direction of the wire axis to a specified percentage of it original length. The compressed test piece is examined for surface cracking. The degree of acceptability is specified in the product standard.
42、10 Deep etch test 10.1 Purpose The deep etch test is used for the detection of surface defects. 10.2 Principle A cold test piece is suitably degreased where appropriate. The test piece which has undergone deformation by drawing is washed and dried and in the case of high carbon steel, the test piece
43、 is stress relieved at 400 C to 500 C for 15 min and allowed to cool to ambient temperature before etching. With the exception of test pieces greater than 5,00 mm and test pieces of annealed structures, the test piece is immersed in a solution of 50 % by volume concentrated hydrochloridric acid and
44、50 % by volume of water, at a minimum temperature of 60 C for a period of time equivalent to 2 s for every 0,025 mm of diameter with a maximum of 5 min. Test pieces greater than 5,00 mm and test pieces of annealed structures may be left in the solution for 10 min. DIN EN 10218-1:2012-03 EN 10218-1:2
45、012 (E) 7 The test piece is examined for surface defects. To ascertain the depth of defect, the test piece is filed until the defect disappears, the difference in thickness before and after filing being recorded as the defect depth. For a definitive assessment of a defect, optical micrographical ana
46、lysis shall be used. 11 Hardness test Hardness test shall be in accordance with EN ISO 6506-1 or EN ISO 6508 (Part 1 to Part 3) as specified in the product standard or in the order. A distinction should be made between surface hardness, core hardness and through hardness. NOTE There is no relevant r
47、elationship between hardness and tensile strength. 12 Quench hardenability test The test pieces for the quench hardening test shall be heated in neutral or reducing furnace atmosphere up to the austenitising temperature specified for the steel type, and maintained at this temperature until they are
48、completely austenitised. They shall then be taken out of the furnace and promptly quenched down, in a high-duty quenching oil, to complete temperature equalization. The high-duty quenching oil shall be at a temperature of (50 10) C, be of sufficient volume and agitated such that together with the speed of immersion, the test pieces shall achieve the temperature of the quenching mediu
