1、STD*BSI BS EN L0244-4-ENGL 2001 = Lb24669 0909299 5T9 I BRITISH STANDARD Steel wire and wire products - Non-ferrous metallic coatings on steel wire - Part 4: Tin coatings The European Standard EN 10244-4:2001 has the status of a British Standard ICs 25.220.40; 77.140.65 BS EN 10244-4:200 1 NO COPYIN
2、G WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW STD-BSI BS EN L0244-4-ENGL 2OOL Lb24669 0909300 040 BS EN 10244-4:2001 Amd. No. National foreword Date Comments This British Standard is the official English language version of The UK participation in its preparation was entrusted to Tec
3、hnical Committee ISE/26, Steel wire, which has the responsibility to: EN 10244-4:2001. - - aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related internation
4、al and European developments and promulgate them in the UK. - A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in
5、the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue . A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are
6、 responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. This British Standard. havine been prepared under the direction of the Engineering Sector Committee. was Summary Of pages This document comprises a front cover, a
7、n inside hont cover, the EN title page, aublished under the authority uaees 2 to 7 and a back cover. “ AY f the Standards Committee and comes into effect on 15 May 2001 The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication
8、O BSI 05-2001 I I ISBN O 580 37144 1 STD*BSI BS EN 30244-4-ENGL 2OOL m Lb24bb9 0909303 TB? m EUROPEAN STANDARD EN 102444 NORME EUROPENNE EUROPISCHE NORM March 2001 ICs 25.220.40; 77.140.70 English version Steel wire and wire products - Non-ferrous metallic coatings on steel wire - Part 4: Tin coatin
9、gs Fils et produits trfils en acier - Revtements mtalliques non ferreux sur fils dacier - Partie 4: Revtements dtain Stahldraht und Drahterzeugnisse - Uberzge aus Nichteisenmetall auf Stahldraht - Teil 4: Uberzge aus Zinn This European Standard was approved by CEN on 21 January 2001. CEN members are
10、 bound to comply with the CENKENELEC Internal Regulations 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 th
11、e Management Centre or to any CEN member. 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 Management Centre has the same status a
12、s the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZA
13、TION COMITE EUROPEEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 E-1050 Brussels 8 2001 CEN All rights of exploitation in any fonn and by any means reserved worldwide for CEN national Members. Ref. No. EN 10244-4:2001 E STD-BSI BS EN LO244-4-ENGL 2001 lb24b
14、b9 0909302 913 Page 2 EN 10244-4:2001 Contents Page Foreword . 3 1 2 3 4 4.1 4.2 4.3 4.4 5 5.1 5.1.1 5.1.2 5.2 5.2.1 5.2.2 5.2.3 5.3 5.4 Scope 4 Normative reference 4 Term and definition -4 Requirements relating to coating 4 Material . 4 Mass of coating . 4 General requirements . 4 Test conditions 5
15、 General . 5 Length of samples . 5 Determination of mass of coating . 5 Calculation of mass of coating 6 Porosity 6 Adherence test 7 Porosity 5 Samples 5 General . 5 Procedure . 6 STD-BSI BS EN L0244-4-ENGL 2001 Lb24669 0707303 85T Page 3 EN 10244-412001 Foreword This European Standard has been prep
16、ared by Technical Committee ECISSTTC 30 “Steel wires“, the secretariat of which is held by BSI. 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 September 2001, and conflicting national standards s
17、hall be withdrawn at the latest by September 2001. This European Standard for non-ferrous metallic coating on steel wire is made up of the following parts: Part 1 : General principles Part 2 : Zinc and zinc alloy coatings Part 3 : Aluminium coatings Part 4 : Tin coatings Part 5 : Nickel coatings Par
18、t 6 : Copper, bronze and brass coatings According to the CENKENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Ital
19、y, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. STD-BSI BS EN 10244-4-ENGL 2001 16246h9 O909304 796 Page 4 EN 10244-412001 1 Scope This part of this European Standard specifies the requirements for the mass, other properties and testing of tin coating
20、s on steel wire and steel wire products of round or other cross section. 2 Normative reference This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are li
21、sted hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN
22、10244-1, Steel wire and wire products - Non-ferrous metallic coatings on steel wire - Part 1: General principles 3 Term and definition For the purposes of this European standard the following term and definition apply. 3.1 wire with tin coating wire to which a tin coating has been applied by hot dip
23、ping or by an electrolytic procedure It does not apply to the coating procedure by ion exchange, which only produces a very fine porous coating with an irregular degree of purity 4 Requirements relating to coating 4.1 Material For hot dip tinning, the ingot material used shall be pure tin . The perm
24、issible impurity level shall be less than 0,5 %. Coating applied by an electrolytic procedure shall contain minimum 99 % of tin. 4.2 Mass of coating The coating mass, when required, shall be agreed at the time of enquiry and order or according to the product standard. 4.3 General requirements See re
25、quirements in EN 10244-1 STDmBSI BS EN 10244-4-ENGL 2001 Lb24bb7 0707305 b22 W Page 5 EN 10244-412001 4.4 Porosity If the order specifications require it, a test may be carried out to establish the presence of small areas of porosity in the coating. In this case porosity does not mean a degree of su
26、rface roughness but extremely fine discontinuites in the coating giving direct access to the base metal. The test conditions and acceptance criteria shall be defined at the time of the invitation to tender or the order. 5 Test conditions 5.1 Samples 5.1.1 General See the general requirements in EN 1
27、0244-1. 5.1.2 Length of samples The length of the samples shall be sufficient to allow the various tests to be carried out. 5.2 Determination of mass of coating 5.2.1 General The mass of the coating shall be determined using the gravimetric method. The sample length necessary to determine the mass o
28、f coating shall be in accordance with Table 1. STD-BSI BS EN 1024Y-4-ENGL 2001 Lb24669 0909306 569 Page 6 EN 10244-4:2001 diameter of wire d (mm) 0,08SdS0,15 0,15 e dS 0,30 0,30 d rj 0,60 0,60 d S 1 ,O0 1 ,O0 c d S 230 2.50 5 d length (mm) 3000 2000 1 O00 500 200 1 O0 5.2.2 Procedure If necessary, d
29、egrease the sample with a suitable solvent. Weigh the sample to an accuracy of 0,l mg. Strip the tin of the samples by dipping in the stripping solution. The stripping solution is obtained by adding 12,5 g SbC13 to 250 ml HCI (18“ Be) and 250 ml demineralized water. When the gas evolution is ceased,
30、 remove the samples from the stripping solution, rinse under running water, dry and weigh once again to an accuracy of 0,l mg. If the mass difference is less than 10 mg, repeat the test with a sample of double the length. Determine the dimension of the wire. 5.2.3 Calculation of mass of coating The
31、mass shall be calculated in accordance with EN 10244-1 5.3 Porosity The acceptable porosity shall be agreed at the time of enquiry and order. The porosity of the tin coating layer shall be evaluated qualitively by one of the following methods: METHOD 1 Bend samples of wire at least 30 cm long into a
32、 U shape, thoroughly degrease and dry and then immerse to at least 1 O cm in the following solution. 100 ml 5,O % NH4SCN analytical purity 100 ml 2,5 % CH3COOh analytical purity 50 mlO,3 % H202 Remove the samples from the solution after 1 minute. Areas of porosity are shown by the appearance of a re
33、d colour. STD-BSI BS EN 1024Y-4-ENGL 2OOL W 1624bb9 0909307 4T5 Page 7 EN 10244-4:2001 METHOD 2 An alternative method consists of immersing the same wire samples in the following solution. Hydrogen peroxide H20220 ml Sodium chloride NaCI 30 g Potassium ferricyanide kFe(CN)6.3H20 1 Og Make up to 1 li
34、tre with demineralized water. Rinse under cold water and wipe dry. Immerse the sample again in the test solution and repeat the operation. Examine the sample to establish the presence of blue coloured areas on the surface (examination with naked eye shall generally be sufficient). The blue coloured
35、areas indicate porosity in the tin coating. 5.4 Adherence test With regard to adherence, the wrapping test shall be carried out around the actual diameter of the wire in so far as the ductility of the base material permits this. If it is not the case, the conditions of the wrapping test shall be agr
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