DIN EN ISO 6509-1-2014 Corrosion of metals and alloys - Determination of dezincification resistance of copper alloys with zinc - Part 1 Test method (ISO 6509-1 2014) German version.pdf

1、September 2014 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).I

2、CS 77.060!%:R“2235847www.din.deDDIN EN ISO 6509-1Corrosion of metals and alloys Determination of dezincification resistance of copper alloys with zinc Part 1: Test method (ISO 6509-1:2014);English version EN ISO 6509-1:2014,English translation of DIN EN ISO 6509-1:2014-09Korrosion von Metallen und L

3、egierungen Bestimmung der Entzinkungsbestndigkeit von Kupfer-Zink-Legierungen Teil 1: Prfverfahren (ISO 6509-1:2014);Englische Fassung EN ISO 6509-1:2014,Englische bersetzung von DIN EN ISO 6509-1:2014-09Corrosion des mtaux et alliages Dtermination de la rsistance la dzincification des alliages de c

4、uivre avec le zinc Partie 1: Mthode dessai (ISO 6509-1:2014);Version anglaise EN ISO 6509-1:2014,Traduction anglaise de DIN EN ISO 6509-1:2014-09Partially supersedesDIN EN ISO 6509:1995-05www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises

5、14 pages 08.14 DIN EN ISO 6509-1:2014-09 2 A comma is used as the decimal marker. National foreword This document (EN ISO 6509-1:2014) has been prepared by Technical Committee ISO/TC 156 “Corrosion of metals and alloys” (Secretariat: SAC, China) and has been adopted as EN ISO 6509-1:2014 by Technica

6、l Committee CEN/TC 262 “Metallic and other inorganic coatings” (Secretariat: BSI, United Kingdom) within the scope of the Agreement on technical cooperation between ISO and CEN (Vienna Agreement). The responsible German body involved in its preparation was the Normenausschuss Materialprfung (DIN Sta

7、ndards Committee Materials Testing), Working Committee NA 062-01-77 AA Korrosionsprfverfahren. ISO 6509 consists of the following parts, under the general title Corrosion of metals and alloys Determination of dezincification resistance of copper alloys with zinc: Part 1: Test method Part 2: Acceptan

8、ce criteria1)The DIN Standard corresponding to the International Standard referred to in this document is as follows: ISO 8044 DIN EN ISO 8044 Amendments This standard differs from DIN EN ISO 6509:1995-05 as follows: a) Clause 1 “Scope” has been rendered more precise; b) Clause 8 “Preparation of tes

9、t specimens” has been revised; c) Subclause 9.5 “Microscopic examination” has been revised; d) the former Clause 8 “Acceptance limits” has been deleted; acceptance criteria are now dealt with in Part 2 of this standard; e) the Bibliography has been updated; f) the standard has been editorially revis

10、ed. Previous editions DIN EN ISO 6509: 1995-05 1 ) In preparation. DIN EN ISO 6509-1:2014-09 3 National Annex NA (informative) Bibliography DIN EN ISO 8044, Corrosion of metals and alloys Basic terms and definitions DIN EN ISO 6509-1:2014-09 4 This page is intentionally blank EUROPEAN STANDARD NORME

11、 EUROPENNE EUROPISCHE NORM EN ISO 6509-1 June 2014 ICS 77.060 Supersedes EN ISO 6509:1995English Version Corrosion of metals and alloys - Determination of dezincification resistance of copper alloys with zinc - Part 1: Test methodCorrosion des mtaux et alliages - Dtermination de la rsistance la dzin

12、cification des alliages de cuivre avec le zinc - Partie 1: Mthode dessai (ISO 6509-1:2014) Korrosion von Metallen und Legierungen - Bestimmung der Entzinkungsbestndigkeit von Kupfer-Zink-Legierungen - Teil 1: Prfverfahren (ISO 6509-1:2014) This European Standard was approved by CEN on 7 May 2014. CE

13、N members are bound to comply with the CEN/CENELEC 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 app

14、lication to the CEN-CENELEC 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 CEN-CENELEC M

15、anagement Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, La

16、tvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Ma

17、rnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 6509-1:2014 E(ISO 6509-1:2014) EN ISO 6509-1:2014 (E) 2 Contents Page Foreword . 3 1 Scope 4 2 Normative references 4 3 Terms and definitions . 4 4 P

18、rinciple 4 5 Reagents and materials 4 6 Apparatus . 5 7 Test specimens 5 8 Preparation of test specimens . 6 9 Procedure . 7 9.1 Positioning of test specimens for test 7 9.2 Operating conditions. 7 9.3 Duration of test 7 9.4 Preparation of sections for microscopic examination 7 9.5 Microscopic exami

19、nation 7 10 Test report 9 Bibliography 10 DIN EN ISO 6509-1:2014-09 EN ISO 6509-1:2014 (E) 3 Foreword This document (EN ISO 6509-1:2014) has been prepared by Technical Committee ISO/TC 156 “Corrosion of metals and alloys” in collaboration with Technical Committee CEN/TC 262 “Metallic and other inorg

20、anic coatings” 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 December 2014, and conflicting national standards shall be withdrawn at the latest by Decemb

21、er 2014. 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 any or all such patent rights. This document supersedes EN ISO 6509:1995. According to the CEN-CENELEC Inter

22、nal 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ir

23、eland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 6509-1:2014 has been approved by CEN as EN ISO 6509-1:2014 without any modification. D

24、IN EN ISO 6509-1:2014-09 1 ScopeThis part of ISO 6509 specifies a method for the determination of dezincification depth of copper alloys with zinc exposed to fresh, saline waters or drinking water. The method is intended for copper alloys with a mass fraction of zinc more than 15 %.This part of ISO

25、6509 describes only the test methodology and does not set out criteria for acceptability of materials for a specific application. Acceptance criteria are described in ISO 6509-2.NOTE The method may be used outside its scope for control or research purposes.2 Normative referencesThe following documen

26、ts, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 8044, Corrosion of metals

27、 and alloys Basic terms and definitions3 Terms and definitionsFor the purposes of this document the terms and definitions given in ISO 8044 apply.4 PrincipleExposure of test specimens to copper (ll) chloride solution followed by microscopic examination.5 Reagents and materials5.1 Copper (ll) chlorid

28、e, mass fraction 1 % solution, freshly prepared.Dissolve 12,7 g of copper(II) chloride dihydrate (CuCl22H20) in deionized water (5.2) and make up the volume to 1 000 ml.5.2 Water, deionized with a conductivity not higher than 20 S/cm at 25 C 2 C.5.3 Non-conducting mounting material, such as phenolic

29、 resin for embedding the test specimens.5.4 Appropriate solvent, for cleaning the test specimens.Corrosion of metals and alloys Determination of dezincification resistance of copper alloys with zinc Part 1: Test method DIN EN ISO 6509-1:2014-09 EN ISO 6509-1:2014 (E) 46 Apparatus6.1 Beaker of glass,

30、 covered with suitable plastic foil, for example polyethylene, secured with elastic thread or another method of sealing using non-metallic material.6.2 Thermostatically controlled method, capable of maintaining the test temperature at 75 C 5 C. Figure 1 provides an example of a method of heating the

31、 test solution.6.3 Optical microscope, provided with a scale for measurement.Key1 heating device2 water or oil bath3 plastic foil secured with elastic thread4 beaker containing the copper (II) chloride solution5 embedded test specimenFigure 1 Example of test apparatus7 Test specimens7.1 Unless speci

32、fied in other product standards, the following method for specimen preparation shall be adopted.7.2 The test specimens shall be taken, for example by sawing with light pressure, in such a way that the properties of the materials are unaffected.7.3 For forgings and castings, at least one test specime

33、n shall be taken from the region with the thinnest section and at least one from the region with the thickest section.7.4 In the case of materials with a specific extrusion or rolling direction, for example plates or bars, two specimens shall be taken. One of the specimens shall be taken from the en

34、d and the other specimen from DIN EN ISO 6509-1:2014-09 EN ISO 6509-1:2014 (E) 5another section of the extruded product. In each specimen surfaces both parallel and perpendicular to the extrusion or rolling direction shall be tested. In addition, in the case of rods, all test specimens, transverse o

35、r longitudinal, shall be cut in such a way as to include points midway between the axis and the periphery.7.5 The area of each test specimen to be exposed shall be approximately 100 mm2. If the size of the component or the cross-section of the rod to be tested is too small to provide test areas of t

36、his size, the largest possible test area shall be taken.See Figure 2.Dimensions in millimetresKey1 phenolic resin or equivalent material2 ground test surface3 test specimenFigure 2 Embedded test specimen with one test surface8 Preparation of test specimens8.1 The test specimens shall be embedded in

37、the phenolic resin or equivalent material (5.3). The test surfaces to be exposed shall be ground using wet abrasive paper, finishing with 500 grade or finer, see Figure 2.8.2 Prior to testing, the test specimens shall be cleaned to remove any surface contamination. The efficacy of the solvent chosen

38、 shall be demonstrated, for example according to ASTM F2165(2007).DIN EN ISO 6509-1:2014-09 EN ISO 6509-1:2014 (E) 69 Procedure9.1 Positioning of test specimens for testThe test specimens shall be placed in the beaker (6.1) containing the copper (II) chloride solution (5.1) so that the test surfaces

39、 are vertical and at least 15 mm above the bottom of the beaker. The plastic foil shall then be placed over the beaker and secured (see Figure 1).NOTE 250 ml+1050ml of the copper (II) chloride solution are required per 100 mm2of exposed surface of the test pieces.9.2 Operating conditions9.2.1 The be

40、aker containing the test specimens shall be placed in the thermostatically controlled environment (6.2), the temperature of which shall be maintained at 75 C 5 C during the entire exposure period.9.2.2 Different alloys shall not be tested simultaneously in the same beaker.9.3 Duration of testThe tes

41、t specimens shall be exposed continuously for 24 h 30 min. At the end of this period, they shall be removed from the beaker, washed in water (5.2), rinsed in an appropriate solvent (5.4) and allowed to dry.9.4 Preparation of sections for microscopic examinationMicroscopic examination of the test spe

42、cimens shall be carried out as soon as possible after exposure. If the test specimens are stored before microscopic examination, they shall be kept in a desiccator. Each test specimen shall be sectioned at right angles to the exposed test surface. The section shall be ground and polished for microsc

43、ope examination. The total length of the section through the exposed surface shall be not less than 5 mm. If the dimensions of the test specimen make this impossible, the section shall be taken to provide the maximum possible total length.9.5 Microscopic examination9.5.1 The micro-section prepared f

44、rom each test area shall be examined using an optical microscope provided with a scale for measurement of the dezincification depth (6.3) and the maximum as well as the average depth of dezincification with respect to the final, corroded, surface shall be recorded. The appropriate magnification shal

45、l be used to provide the greatest accuracy of measurement.9.5.2 For some purposes, assessment of the characteristics of dezincification distribution, for example whether the depth of the dezincified zone varies greatly (localized dezincification) or is an extended area (layer dezincification) and wh

46、ether the attack is limited to a single phase in the alloy, measurements of both the average and the maximum depth of dezincification shall be executed. In the case of a few localized dezincification attacks, only the measurement of the maximum depth of attack is required. The importance of measurem

47、ent of both maximum and average dezincification depth is demonstrated in Figure 3.DIN EN ISO 6509-1:2014-09 EN ISO 6509-1:2014 (E) 7a) Localized dezincification b) Layer dezincificationNOTE The dezincification attack has propagated from the left side of both copper alloy specimens. Dark areas repres

48、ent attacks in most probably the -phase. This figure demonstrates the importance of measurement of both maximum and average dezincification depth. If only the maximum depth were measured the difference between the two specimens would not have been apparent.Figure 3 Cross-section through two copper alloy specimens with same maximum dezincification depth but different average dezincification depth9.5.3 The examined section shall have the maximum possible length. If there is evidence of edge