1、May 2017 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).ICS 25.220.60!%eQ9“2664622www.din.deDIN E
2、N 13523-12Coil coated metals Test methods Part 12: Resistance to scratching;English version EN 1352312:2017,English translation of DIN EN 13523-12:2017-05Bandbeschichtete Metalle Prfverfahren Teil 12: Widerstand gegen Ritzen;Englische Fassung EN 1352312:2017,Englische bersetzung von DIN EN 13523-12:
3、2017-05Tles prlaques Mthodes dessai Partie 12: Rsistance la rayure;Version anglaise EN 1352312:2017,Traduction anglaise de DIN EN 13523-12:2017-05SupersedesDIN EN 1352312:200502www.beuth.deDocument comprises 10 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original sh
4、all be considered authoritative.05.17 DIN EN 13523-12:2017-05 2 A comma is used as the decimal marker. National foreword This document (EN 13523-12:2017) has been prepared by Technical Committee CEN/TC 139 “Paints and varnishes” (Secretariat: DIN, Germany), Working Group WG 9 “Testing of coil coated
5、 metals” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was DIN-Normenausschuss Beschichtungsstoffe und Beschichtungen (DIN Standards Committee Coatings and Coating Materials), Working Committee NA 002-00-07 AA “General test methods for coating materials and coa
6、tings”. The European Standards referred to in this document have been published as DIN EN or DIN EN ISO Standards with the same number. Amendments This standard differs from DIN EN 13523-12:2005-02 as follows: a) a reference to EN 13523-0 concerning conditioning of the test panels has been added; b)
7、 the text has been editorially revised and normative references have been updated. Previous editions DIN EN 13523-12: 2005-02 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13523-12 March 2017 ICS 25.220.60 Supersedes EN 13523-12:2004English Version Coil coated metals - Test methods - Part 12:
8、 Resistance to scratching Tles prlaques - Mthodes dessai - Partie 12 : Rsistance la rayure Bandbeschichtete Metalle - Prfverfahren - Teil 12: Widerstand gegen Ritzen This European Standard was approved by CEN on 30 December 2016. CEN members are bound to comply with the CEN/CENELEC Internal Regulati
9、ons 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-CENELEC Management Centre or to any CEN member.
10、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 Management Centre has the same status as the official versions. CEN m
11、embers 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, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Por
12、tugal, Romania, Serbia, 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 Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation
13、 in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13523-12:2017 EEN 13523-12:2017 (E) 2 Contents Page European foreword . 3 1 Scope 5 2 Normative references 5 3 Terms and definitions . 5 4 Principle . 5 5 Apparatus . 5 6 Sampling . 6 7 Test panels . 6 8 Procedure
14、. 7 8.1 Ambient conditions 7 8.2 Determination 7 9 Expression of results 7 10 Precision . 7 11 Test report . 7 Bibliography 8 DIN EN 13523-12:2017-05 EN 13523-12:2017 (E) 3 European foreword This document (EN 13523-12:2017) has been prepared by Technical Committee CEN/TC 139 “Paints and varnishes”,
15、the secretariat of which is held by DIN. 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 2017, and conflicting national standards shall be withdrawn at the latest by September 2017. Atte
16、ntion is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 13523-12:2004. The main changes are: a) a reference to EN 13523-0 concerning
17、conditioning of the test panels was added; b) the text has been editorially revised and the normative references have been updated. The EN 13523 series, Coil coated metals Test methods, consists of the following parts: Part 0: General introduction Part 1: Film thickness Part 2: Gloss Part 3: Colour
18、difference Instrumental comparison Part 4: Pencil hardness Part 5: Resistance to rapid deformation (impact test) Part 6: Adhesion after indentation (cupping test) Part 7: Resistance to cracking on bending (T-bend test) Part 8: Resistance to salt spray (fog) Part 9: Resistance to water immersion Part
19、 10: Resistance to fluorescent UV radiation and water condensation Part 11: Resistance to solvents (rubbing test) Part 12: Resistance to scratching Part 13: Resistance to accelerated ageing by the use of heat Part 14: Chalking (Helmen method) Part 15: Metamerism DIN EN 13523-12:2017-05 EN 13523-12:2
20、017 (E) 4 Part 16: Resistance to abrasion Part 17: Adhesion of strippable films Part 18: Resistance to staining Part 19: Panel design and method of atmospheric exposure testing Part 20: Foam adhesion Part 21: Evaluation of outdoor exposed panels Part 22: Colour difference Visual comparison Part 23:
21、Resistance to humid atmospheres containing sulfur dioxide Part 24: Resistance to blocking and pressure marking Part 25: Resistance to humidity Part 26: Resistance to condensation of water Part 27: Resistance to humid poultice (Cataplasm test) Part 29: Resistance to environmental soiling (Dirt pick-u
22、p and striping) According to the CEN-CENELEC Internal Regulations, the national standards organisations 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 Macedo
23、nia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 13523-12:2017-05 EN 13523-12:2017 (E) 5 1 Scope This par
24、t of the EN 13523 series describes the procedure for determining the resistance of an organic coating on a metallic substrate to penetration by scratching with a needle. It is possible that with some aluminium alloys and thin gauge steel substrate below 0,4 mm, that rather than scratching, the needl
25、e will deform the substrate. Under these conditions, this test method is not applicable. Soft coatings such as poly vinyl chloride (PVC) and structured coatings will not give a precise result due to the soft nature of the coating and/or the potential for the needle to snag. The method is not applica
26、ble to conductive coatings. 2 Normative references The following documents, 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 d
27、ocument (including any amendments) applies. EN 13523-0:2014, Coil coated metals - Test methods - Part 0: General introduction EN 23270, Paints and varnishes and their raw materials - Temperatures and humidities for conditioning and testing (ISO 3270) 3 Terms and definitions For the purposes of this
28、document, the terms and definitions given in EN 13523-0 apply. 4 Principle The organic coating is tested by mechanical means whereby a test panel is dragged beneath a needle upon which a specified load is placed. 5 Apparatus 5.1 Scratch apparatus (see EN ISO 1518-1). The apparatus is shown in Figure
29、 1. It consists of a sliding table, which holds the test panel, with an arm on which the load is placed over a chuck, which holds the needle, a constant speed motor to drive the table and a low voltage electrical meter to detect electrical contact. Other arrangements which give a similar performance
30、 may be used. DIN EN 13523-12:2017-05 EN 13523-12:2017 (E) 6 Key 1 panel in test panel holder with sloping ramp 2 needle 3 rod which allows the needle to lower gently onto the tested surface 4 counterweight 5 electrical connection with indicator for detecting scratch penetration to a metallic substr
31、ate 6 drive from constant-speed motor Figure 1 Scratch apparatus 5.2 Needle that can be fixed on the apparatus. The tip of the needle is a small sphere (1 0,05) mm in diameter of hardened steel or tungsten carbide, the latter giving a longer serviceable life. In the case of a needle with a tip of ha
32、rdened steel, the needle should be used only once and then disposed of or re-tipped. 6 Sampling Shall be in accordance with EN 13523-0. 7 Test panels Shall be in accordance with EN 13523-0. The test panel to be tested shall be flat and typically 75 mm 150 mm, although size may vary depending on the
33、apparatus. DIN EN 13523-12:2017-05 EN 13523-12:2017 (E) 7 8 Procedure 8.1 Ambient conditions Measure the resistance to scratching of the organic coating at ambient conditions. For more accurate measurements, as required for instance in case of dispute, the temperature shall be (23 2) C or any other
34、temperature agreed upon and the relative humidity shall be (50 5) %, in accordance with EN 23270. Conditioning is carried out in accordance with EN 13523-0:2014, Clause 6. 8.2 Determination Clamp the test panel onto the sliding table, using the screw clamps on the apparatus, the long edge being in t
35、he direction in which the scratch is to be made. The surface to be tested shall be facing up. Place the needle in the chuck. It is important that the needle tip is checked for damage and that any debris is removed. This should be carried out prior to every scratch. Adjust the position of the counter
36、weight so that the rod is just in contact with the sample holder on top of the ramp. Place the specified load on the needle. Put the apparatus into the scratch mode and start the test. The minimum length of the travel shall be 50 mm. The penetration of the coating will be indicated by the detection
37、of an electrical current when the needle makes contact with the metallic substrate. If the test method is to be used as a pass or fail method, this procedure shall be carried out 3 times with the same load at different positions on the test panel. This procedure can be repeated after increasing the
38、load until penetration of the coating to the metallic substrate takes place. It is essential that the movement is smooth with no heavy downward or lateral movement. 9 Expression of results The result shall be expressed either by a pass or fail with a specified load or by the load just prior to penet
39、ration, in which case the result shall be the arithmetic mean of three measurements. 10 Precision No precision data are available. 11 Test report The test report shall contain at least the following information: a) all details necessary to identify the product tested; b) a reference to this part of
40、the EN 13523 series (EN 13523-12); c) the temperature at which the test was carried out; d) the direction of scratching (relative to rolling direction); e) the result of the test, as indicated in Clause 9; f) any deviation from the test method specified; g) the date of the test. DIN EN 13523-12:2017
41、-05 EN 13523-12:2017 (E) 8 Bibliography 1 EN 1396, Aluminium and aluminium alloys - Coil coated sheet and strip for general applications - Specifications 2 EN 10169, Continuously organic coated (coil coated) steel flat products Technical delivery conditions 3 EN ISO 1518-1, Paints and varnishes - Determination of scratch resistance - Part 1: Constant-loading method (ISO 1518-1) DIN EN 13523-12:2017-05
