1、December 2010 Translation by DIN-Sprachendienst.English price group 8No 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).IC
2、S 25.220.20!$lf“1735967www.din.deDDIN EN ISO 3211Anodizing of aluminium and its alloys Assessment of resistance of anodic oxidation coatings to cracking bydeformation (ISO 3211:2010)English translation of DIN EN ISO 3211:2010-12Anodisieren von Aluminium und Aluminiumlegierungen Prfung der Bestndigke
3、it von anodisch erzeugten Oxidschichten gegen Rissbildung beiVerformung (ISO 3211:2010)Englische bersetzung von DIN EN ISO 3211:2010-12Anodisation de laluminium et de ses alliages valuation de la rsistance des couches anodiques la formation de criques pardformation (ISO 3211:2010)Traduction anglaise
4、 de DIN EN ISO 3211:2010-12SupersedesDIN EN 12373-15:2000-12www.beuth.deDocument comprises pagesIn case of doubt, the German-language original shall be considered authoritative.1212.10 DIN EN ISO 3211:2010-12 2 A comma is used as the decimal marker. National foreword This standard has been prepared
5、by Technical Committee ISO/TC 79 “Light metals and their alloys”, Subcommittee SC 2/WG 16 “Revisions for systematic reviewed TC 79/SC 2 ISO standards” (Secretariat: JISC, Japan) in collaboration with Technical Committee CEN/TC 132 “Aluminium and aluminium alloys”, Working Group WG 15 “Aluminium anod
6、isation” (Secretariat: BSI, United Kingdom). The responsible German body involved in its preparation was the Normenausschuss Nichteisenmetalle (Nonferrous Metals Standards Committee), Working Committee NA 066-01-09 AA Anodisch oxidiertes Aluminium. Amendments This standard differs from DIN EN 12373-
7、15:2000-12 as follows: a) the standard has been taken over as DIN EN ISO 3211:2010-12 (the main title has been adapted), see National Annex NA; b) the standard has been editorially revised. Previous editions DIN EN 12373-15: 2000-12 DIN EN ISO 3211:2010-12 3 National Annex NA (informative) Correspon
8、dence between the previous standards series DIN EN 12373 “Aluminium and aluminium alloys Anodizing” and the corresponding new ISO and DIN EN ISO Standards Table NA.1 Correspondence previous now DIN EN 12373 DIN EN ISO Part 1 7599 General specifications for anodic oxidation coatings on aluminium The
9、title has been slightly changed Part 2 2106 Determination of mass per unit area (surface density) of anodic oxidation coatings Gravimetric method Part 3 2128 Determination of thickness of anodic oxidation coatings Non-destructive measurement by split-beam microscope Part 4 2143 Estimation of loss of
10、 absorptive power of anodic oxidation coatings after sealing Dye spot test with prior acid treatment Part 5 2931 Assessment of quality of sealed anodic oxidation coatings by measurement of admittance Part 6 Part 7 3210 Assessment of quality of sealed anodic oxidation coatings by measurement of the l
11、oss of mass after immersion in phosphoric acid/chromic acid solution The title has been changed: with/without prior acid treatment Part 8 Determination of the comparative fastness to ultra-violet light and heat of coloured anodic oxidation coatings Part 9 Part 10 8251 Measurement of abrasion resista
12、nce of anodic oxidation coatings The title has been changed Part 11 7668 Measurement of specular reflectance and specular gloss of anodic oxidation coating at angles of 20 degrees, 45 degrees, 60 degrees or 85 degrees Part 12 6719 Measurement of reflectance characteristics of aluminium surfaces usin
13、g integrating-sphere instruments Part 13 7759 Measurement of reflectance characteristics of aluminium surface using a goniophotometer or an abridged goniophotometer The German title has been slightly changed Part 14 10215 Visual determination of image clarity of anodic oxidation coatings Chart scale
14、 method Part 15 3211 Assessment of resistance of anodic oxidation coatings to cracking by deformation Part 16 2085 Check for continuity of thin anodic oxidation coatings Copper sulphate test Part 17 2376 Determination of electric breakdown potential Part 18 8993 Rating system for the evaluation of p
15、itting corrosion Chart method Part 19 8994 Rating system for the evaluation of pitting corrosion Grid method Anodizing of aluminium and its alloys 6581DIN EN ISO 3211:2010-12 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 3211 September 2010 ICS 25.220.20
16、 Supersedes EN 12373-15:2000English Version Anodizing of aluminium and its alloys - Assessment of resistance of anodic oxidation coatings to cracking by deformation (ISO 3211:2010) Anodisation de laluminium et de ses alliages - valuation de la rsistance des couches anodiques la formation de criques
17、par dformation (ISO 3211:2010) Anodisieren von Aluminium und Aluminiumlegierungen - Prfung der Bestndigkeit von anodisch erzeugten Oxidschichten gegen Rissbildung bei Verformung (ISO 3211:2010) This European Standard was approved by CEN on 31 August 2010. CEN members are bound to comply with the CEN
18、/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 application to the CEN Management Centre or t
19、o 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 Management Centre has the same status as the official versi
20、ons. CEN members are 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, Slo
21、venia, 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 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN
22、national Members. Ref. No. EN ISO 3211:2010: EContents DIN EN ISO 3211:2010-12 EN ISO 3211:2010 (E) 2 Page Foreword3 1 Scope 4 2 Principle4 3 Apparatus .4 4 Procedure .5 5 Expression of results 5 6 Test report 6 Bibliography 8 Foreword The text of ISO 3211:2010 has been prepared by Technical Committ
23、ee ISO/TC 79 Light metals and their alloys” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 3211:2010 by Technical Committee CEN/TC 132 “Aluminium and aluminium alloys” the secretariat of which is held by AFNOR. This European Standard shall be given the
24、status of a national standard, either by publication of an identical text or by endorsement, at the latest by March 2011, and conflicting national standards shall be withdrawn at the latest by March 2011. Attention is drawn to the possibility that some of the elements of this document may be the sub
25、ject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 12373-15:2000. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement
26、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, Spain, Sweden, Switzerl
27、and and the United Kingdom. Endorsement notice The text of ISO 3211:2010 has been approved by CEN as a EN ISO 3211:2010 without any modification. “ DIN EN ISO 3211:2010-12 EN ISO 3211:2010 (E) 3 1 Scope This International Standard specifies an empirical method for assessing the resistance of anodic
28、oxidation coatings to cracking by deformation. The method is applicable particularly to sheet material with anodic oxidation coatings of thickness less than 5 m, and is useful for development purposes. NOTE If the test piece is thick, even more than 5 m of coating can be measured (see Clause 6). 2 P
29、rinciple A test piece is bent along a spiral, graduated with a radius of curvature index, using a simple instrument. The radius of curvature corresponding to the region where the first cracks in the oxide layer appear is determined and the percentage elongation of the test piece corresponding to thi
30、s radius is calculated. 3 Apparatus 3.1 Measuring instrument, as shown in Figure 1, which includes the following elements. 3.1.1 Steel former, mounted on a suitable base, in the shape of a spiral, graduated in deformation indexes, E, from 1 to 18. These indexes, E, correspond to radii of curvature,
31、R, as shown in Table 1, and are derived from Equation (1): R = 21 E (1) where R is the radius of curvature, in centimetres; E is the deformation index corresponding to the region where the first cracks appear. 3.1.2 Two screws, for clamping the ends of the test piece. DIN EN ISO 3211:2010-12 EN ISO
32、3211:2010 (E) 4 Table 1 Relationship between radius of curvature R and deformation index E Deformation index E Radius of curvature R cm Deformation index E Radius of curvature R cm 1 20 10 11 2 19 11 10 3 18 12 9 4 17 13 8 5 16 14 7 6 15 15 6 7 14 16 5 8 13 17 4 9 12 18 3 4 Procedure 4.1 Test piece
33、Cut a strip of anodized aluminium having approximately the following dimensions: length: 25 cm; width: 2 cm; maximum thickness: 0,5 cm. 4.2 Determination Clamp one end of the test piece with the clamping screw 3 with the significant surface outwards. Bend the test piece progressively over the spiral
34、, in such a way that the test piece remains in contact with the spiral, and clamp the other end with the second screw 5. Beginning from clamping screw 3, examine the anodic oxidation coating and mark the region where the first cracks appear. lf the cracks are difficult to detect, they can be rendere
35、d visible using the procedure described in ISO 2085 by removing the bent test piece and immersing it in copper sulfate solution for 5 min, then rinsing and drying it. The test piece is then replaced on the apparatus and the deformation index corresponding to the region where the first cracks appear
36、is marked. 5 Expression of results Express the elongation, A, of the anodized metal as a percentage using Equation (2): 1002dAR d=+(2) DIN EN ISO 3211:2010-12 EN ISO 3211:2010 (E) 5 where d is the thickness, in centimetres, of the test piece; R is the radius of curvature, in centimetres, given by Eq
37、uation (1). 6 Test report The test report shall include at least the following information: a) a reference to this International Standard; b) the type and identification of the product tested; c) the result of the test (see Clause 5); d) the thickness of the test piece, the anodic coating thickness
38、and the index, E, in the case of a thick test piece with an anodic coating greater than 5 m; e) anything unusual noticed during the determination; f) any operations not included in the procedure described in this International Standard, or considered to be optional; g) the date of the test. DIN EN I
39、SO 3211:2010-12 EN ISO 3211:2010 (E) 6 Key 1 steel spiral 4 rubber pad 2 wooden base 5 clamping screw 3 clamping screw, removable Figure 1 Deformation index measuring instrument (scale 1: 1,7) DIN EN ISO 3211:2010-12 EN ISO 3211:2010 (E) 7 Bibliography 1 ISO 2085, Anodizing of aluminium and its alloys Check for continuity of thin anodic oxidation coatings Copper sulfate test DIN EN ISO 3211:2010-12 EN ISO 3211:2010 (E) 8
