1、August 2009DEUTSCHE NORM English price group 11No part of this standard 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 25.220.40; 77.140.65!$Y
2、(6“1540519www.din.deDDIN EN 10244-2Steel wire and wire products Non-ferrous metallic coatings on steel wire Part 2: Zinc or zinc alloy coatingsEnglish version of DIN EN 10244-2:2009-08Stahldraht und Drahterzeugnisse berzge aus Nichteisenmetall auf Stahldraht Teil 2: berzge aus Zink oder Zinklegierun
3、genEnglische Fassung DIN EN 10244-2:2009-08SupersedesDIN EN 10244-2:2001-07www.beuth.deDocument comprises 22 pagesDIN EN 10244-2:2009-08 National foreword This standard has been prepared by Technical Committee ECISS/TC 30 “Steel wires” (Secretariat: AFNOR, France). The responsible German body involv
4、ed in its preparation was the Normenausschuss Stahldraht und Stahldrahterzeugnisse (Steel Wire and Wire Products Standards Committee), Technical Committee NA 099-00-01 AA Stahldraht. For more detailed information about the Normenausschuss Stahldraht und Stahldrahterzeugnisse (NAD), please visit www.
5、nad.din.de. EN 10244 consists of the following parts, under the general title Steel wire and wire products Non-ferrous metallic coating on steel wire: Part 1: General principles Part 2: Zinc or zinc alloy coatings Part 3: Aluminium coatings Part 4: Tin coatings Part 5: Nickel coatings Part 6: Copper
6、, bronze or brass coatings The DIN Standard corresponding to the International Standard referred to in this document is as follows: ISO 7802 DIN ISO 7802 Amendments This standard differs from DIN EN 10244-2:2001-07 as follows: a) The title of Table 1 has been changed. b) The minimum purity of the ma
7、terial ingot used for the zinc coating has been increased from 99,9 % to 99,95 %. c) In Table 2, coating class “E” has been added. d) Subclause 4.2.5.1 has been revised. e) In subclause 5.2.3.6, the equations have been corrected. f) Subclause 5.3.3 has been revised. g) The standard has been editoria
8、lly revised. Previous editions DIN 51213: 1940xx-06, 1965-07, 1970-12 DIN 1548: 1942-10, 1970-09, 1979-01 DIN EN 10244-2: 2001-07 2 DIN EN 10244-2:2009-08 National Annex NA (informative) Bibliography DIN ISO 7802, Metallic Materials Wire Wrapping test 3 DIN EN 10244-2:2009-08 4 This page is intentio
9、nally blank. EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 10244-2 April 2009 ICS 25.220.40; 77.140.65 Supersedes EN 10244-2:2001 English Version Steel wire and wire products Non-ferrous metallic coatings on steel wire Part 2: Zinc or zinc alloy coatings Fils et produits trfils en acier Revte
10、ments mtalliques non ferreux sur fils dacier Partie 2: Revtement de zinc ou dalliage de zinc Stahldraht und Drahterzeugnisse berzge aus Nichteisenmetall auf Stahldraht Teil 2: berzge aus Zink oder Zinklegierungen This European Standard was approved by CEN on 20 December 2008. CEN members are bound t
11、o comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard 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 Ma
12、nagement 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 translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as
13、 theofficial versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovak
14、ia, Slovenia, Spain, 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 2009 CEN All rights of exploitation in any form and by any means reserved worldwide f
15、or CEN national Members. Ref. No. EN 10244-2:2009: EEN 10244-2:2009 (E) 2 Contents PageForeword 31 Scope 42 Normative references 43 Terms and definitions .44 Coating requirements 64.1 Requirements for the coatings material 64.2 Requirements relating to coating on the wire 64.2.1 Coating mass .64.2.2
16、 Appearance of coating 64.2.3 Dipping test 64.2.4 Special finishes 84.2.5 Adherence of coating 85 Test conditions . 105.1 Selection of samples 105.2 Determination of mass of coating . 105.2.1 General . 105.2.2 Gravimetric method 105.2.3 Gaseous volumetric method . 115.3 Dipping test . 165.3.1 Princi
17、ple . 165.3.2 Reagents 165.3.3 Preparation of test piece 175.3.4 Performing of the test 175.3.5 Interpretation of results . 17Bibliography . 18DIN EN 10244-2:2009-08 EN 10244-2:2009 (E) 3 Foreword This document (EN 10244-2:2009) has been prepared by Technical Committee ECISS/TC 30 “Steel wires”, the
18、 secretariat of which is held by AFN0R. 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 October 2009, and conflicting national standards shall be withdrawn at the latest by October 2009. Attention
19、 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 10244-2:2001. Some significant technical changes from the previous
20、edition of this standard have been made like the addition of new mass requirements for a coating of Zn95AI5 (in Table 2, see E) and the correction of the Formula in 5.2.3.6 “Expression of results“. This European Standard for non-ferrous metallic coating on steel wire is made up of the following part
21、s: Part 1: General principles Part 2: Zinc or zinc alloy coatings Part 3: Aluminium coatings Part 4: Tin coatings Part 5: Nickel coatings Part 6: Copper, bronze or brass coatings According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bo
22、und to implement this European Standard: Austria, Belgium, Bulgaria, 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,
23、Switzerland and the United Kingdom. DIN EN 10244-2:2009-08 EN 10244-2:2009 (E) 4 1 Scope This part of this European Standard specifies the requirement for coating mass, other properties and testing of zinc and zinc alloy coatings on steel wire and steel wire products of circular or other section. 2
24、Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 1179, Zinc and zinc alloy
25、s Primary zinc EN 10218-1, Steel wire and wire products General Part 1: Test methods EN 10244-1:2009, Steel wire and wire products Non-ferrous metallic coatings on steel wire Part 1: General principles ISO 7802, Metallic materials - Wire - Wrapping test ISO 7989-2:2007, Steel wire and wire products
26、Non-ferrous metallic coatings on steel wire Part 2: Zinc or zinc-alloy coating ASTM B 750, Standard Specification for GALFAN (Zinc-5% Aluminium-Mischmetal) Alloy in Ingot Form for Hot-Dip Coatings. 3 Terms and definitions For the purposes of this document, the following terms and definitions apply.
27、3.1 wire with zinc or zinc alloy coating wire to which zinc or zinc alloy coating has first been applied to protect it against corrosion. NOTE The coating method may be hot dipping in a bath of molten zinc or by means of an aqueous solution of suitable electrolyte. In the hot dipping process wiping
28、media may be used to modify the mass of coating 3.2 zinc or zinc alloy coating zinc to which deliberately other elements are added in order to obtain particular characteristics. NOTE In all cases the quantity of zinc in the alloy shall be minimum 50 %. The most common alloy elements are aluminium, t
29、in, nickel but other elements may also be considered 3.3 mass of coating mass of zinc per unit of surface area expressed in grams per square metre of surface of bare wire DIN EN 10244-2:2009-08 EN 10244-2:2009 (E) 5 Table 1 Mass requirements for a coating of Zn Diameter d mm Classes aA AB B C D A x
30、3b g/m2 g/m2g/m2g/m2g/m2g/m20,15 d 0,20 15 10 0,20 d 0,25 30 20 20 20 15 0,25 d 0,32 45 30 30 25 15 0,32 d 0,40 60 30 30 25 15 0,40 d 0,50 85 55 40 30 15 0,50 d 0,60 100 70 50 35 20 0,60 d 0,70 115 80 60 40 20 0,70 d 0,80 130 90 60 45 20 0,80 d 0,90 145 100 70 50 20 0,90 d 1,00 155 110 70 55 25 1,00
31、 d 1,20 165 115 80 60 25 1,20 d 1,40 180 125 90 65 25 540 1,40 d 1,65 195 135 100 70 30 585 1,65 d 1,85 205 145 100 75 30 615 1,85 d 2,15 215 155 115 80 40 645 2,15 d 2,50 230 170 125 85 45 690 2,50 d 2,80 245 185 125 95 45 735 2,80 d 3,20 255 195 135 100 50 765 3,20 d 3,80 265 210 135 105 60 795 3,
32、80 d 4,40 275 220 135 110 60 825 4,40 d 5,20 280 220 150 110 70 840 5,20 d 8,20 290 110 80 870 8,20 d 10,00 300 110 80 900 aThe coating class with a designation starting with A relates to thick coatings (generally final coating). Designations ending in B relate to classes usually but not always obta
33、ined by (zinc coating) and subsequent drawing. Classes C and D are standard classes for low mass coating which are usually produced but not exclusively, produced by hot zinc dipping and then wiping. bA x 3 relates to very high mass requirement three times higher than class A. Other multiples of Clas
34、s A are possible and these classes will be identified in the same way, e.g. A x 4. DIN EN 10244-2:2009-08 EN 10244-2:2009 (E) 6 The ingot of the material used for the zinc coating shall be of minimum 99,95 % purity (according to Z3 of EN 1179) unless otherwise stated in the relevant product standard
35、 or other specification in the order. Coatings applied by electrolysis shall contain a minimum of 99 % zinc. 4.2 Requirements relating to coating on the wire 4.2.1 Coating mass The minimum mass of zinc per unit of surface area of the wire shall comply with the requirements of Table 1. If no class of
36、 zinc coating or no coating mass is specified the coating shall be called “regular coating“. Such a coating shall be not less than 1 g zinc mass per Kg of zinc coated wire (equivalent to the coating mass in g/m2not less than two times the wire diameter expressed in mm). The requirements for zinc-alu
37、minium coatings of type Zn95Al 5 are given in Table 2. For other zinc alloy coatings, the manufacturer and supplier shall agree on the required coating mass. 4.2.2 Appearance of coating The coating applied to the wire shall be reasonably smooth and as evenly distributed as industrial technology allo
38、ws and not show discontinuities such as bare patches, dross contamination, etc. NOTE The Zn95Al5 zinc-aluminium alloy might show difference in colour and become darker with time. This does not affect the corrosion protection performance. 4.2.3 Dipping test When specified the dipping (immersion) test
39、 shall be carried out according to the procedure detailed in 5.3. However, it should be pointed out that there is no correlation between the number of dips and the mass of the coating and that the result is influenced as much by the conditions of manufacture of the coating as by the uniformity of th
40、e coating. Table 3 gives the minimum number of immersions for coatings of classes A and AB. The dipping test does not apply to class B, C and D. 4 Coating requirements 4.1 Requirements for the coatings material The zinc or zinc alloy used for the coating shall comply with the standard EN 1179. For z
41、inc-alloy grades not mentioned in the EN the alloy shall be specified at the enquiry and order. For Zn95Al5 reference is made to ASTM B 750 with or without mischmetal (MM).11) Mischmetal is a mixture of rare earth metals (La and others) which is a by product from zinc production. DIN EN 10244-2:2009
42、-08 EN 10244-2:2009 (E) 7 Table 2 Mass requirements for a coating of Zn95Al5 Diameter mm Mass of coating ag/m2A AB B E b0,20 d 0,25 20 20 40 0,25 d 0,40 30 300,40 d 0,50 85 55 400,50 d 0,60 100 70 50 0,60 d 0,70 115 80 600,70 d 0,80 130 90 600,80 d 0,90 145 100 70 0,90 d 1,00 155 110 701,00 d 1,20 1
43、65 115 801,20 d 1,40 180 125 90 60 1,40 d 1,65 195 135 1001,65 d 1,85 205 145 1001,85 d 2,15 215 155 115 2,15 d 2,50 230 170 1252,50 d 2,80 245 185 1252,80 d 3,20 255 195 135 3,20 d 3,80 265 210 1353,80 d 4,40 275 220 1354,40 d 5,20 280 220 150 5,20 d 8,20 290 8,20 d 10,00 300aThe coating class with
44、 a designation starting with A relates to thick coatings (generally final coating). Designations ending in B relate to classes usually but not always obtained by (zinc coating) and subsequent drawing. bthe corrosion resistance of this class E must be at least equivalent of these from a zinc coating
45、according Table 1 class B Table 3 Minimum number of dips Nominal diameter mm Class A of coating Class AB of coating Number of dips Number of dips of 1 min of 1/2 min of 1min of 1/2 min 0,40 d 0,60 1 0,60 d 0,90 1 1 0,90 d 1,00 1 1 1,00 d 1,40 1 1,40 d 1,65 2 1,65 d 1,85 1 1,85 d 2,15 2 1 2,15 d 2,80
46、 2 1 1 2,80 d 4,40 3 2 4,40 d 5,20 3 1 5,20 d 8,20 8,20 d 10,00 4 DIN EN 10244-2:2009-08 EN 10244-2:2009 (E) 8 4.2.4 Special finishes If drawing after galvanising is required it shall be stipulated at the time of enquiry and order or in the appropriate product standard. The same also applies for oth
47、er special finishes such as wax coating, a polished surface or an exceptionally smooth surface. 4.2.5 Adherence of coating 4.2.5.1 During the test carried out in accordance with EN 10218-1, the coating shall adhere to the steel when subjected to the conditions of wrapping test for adherence. It shal
48、l not crack or split to such an extent that slivers of coating can be removed by simply rubbing with the bare fingers. The loosening or detachment during testing of small particles of zinc resulting from mechanical polishing of the surface of the zinc or zinc alloy coating shall not be considered to be a cause for rejection. The wrapping test is defined in ISO 7802 and specific requirements for wires are defined in EN 10244-1:2009, 5.3. 4.2.5.2 Assessment of adherence To assess the adherence of the coating as may b
