BS EN 13523-12-2017 Coil coated metals Test methods Resistance to scratching《卷材覆层金属 试验方法 耐划痕》.pdf

1、BS EN 13523-12:2017Coil coated metals TestmethodsPart 12: Resistance to scratchingBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN 13523-12:2017 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 13523-12:2017. It supersedes BS

2、 EN 13523-12:2004 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee STI/21, Paint systems and surface preparation for metallic substrates.A list of organizations represented on this committee can be obtained on request to its secretary.This publication d

3、oes not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017.Published by BSI Standards Limited 2017ISBN 978 0 580 91555 0 ICS 25.220.60 Compliance with a British Standard cannot confer immunity from

4、legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2017.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS EN 13523-12:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13523-12 March 2

5、017 ICS 25.220.60 Supersedes EN 13523-12:2004English Version Coil coated metals - Test methods - Part 12: Resistance to scratching Tles prlaques - Mthodes dessai - Partie 12 : Rsistance la rayure Bandbeschichtete Metalle - Prfverfahren - Teil 12: Widerstand gegen Ritzen This European Standard was ap

6、proved by CEN on 30 December 2016. CEN 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 nati

7、onal standards may be obtained on application 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 langu

8、age and notified to the CEN-CENELEC Management 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,

9、 Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NOR

10、MUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13523-12:2017 EBS EN 13523-12:2017EN 13523-12:2017 (E) 2 Contents Page European foreword . 3 1 Scope 5 2 Nor

11、mative references 5 3 Terms and definitions . 5 4 Principle . 5 5 Apparatus . 5 6 Sampling . 6 7 Test panels . 6 8 Procedure. 7 8.1 Ambient conditions 7 8.2 Determination 7 9 Expression of results 7 10 Precision . 7 11 Test report . 7 Bibliography 8 BS EN 13523-12:2017EN 13523-12:2017 (E) 3 European

12、 foreword This document (EN 13523-12:2017) has been prepared by Technical Committee CEN/TC 139 “Paints and varnishes”, 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 th

13、e latest by September 2017, and conflicting national standards shall be withdrawn at the latest by September 2017. Attention 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 p

14、atent rights. This document supersedes EN 13523-12:2004. The main changes are: a) a reference to EN 13523-0 concerning 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 meth

15、ods, consists of the following parts: Part 0: General introduction Part 1: Film thickness Part 2: Gloss Part 3: Colour 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

16、 to cracking on bending (T-bend test) Part 8: Resistance to salt spray (fog) Part 9: Resistance to water immersion Part 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 accelerate

17、d ageing by the use of heat Part 14: Chalking (Helmen method) Part 15: Metamerism BS EN 13523-12:2017EN 13523-12:2017 (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:

18、Foam adhesion Part 21: Evaluation of outdoor exposed panels Part 22: Colour difference Visual comparison Part 23: 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 wate

19、r Part 27: Resistance to humid poultice (Cataplasm test) Part 29: Resistance to environmental soiling (Dirt pick-up 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,

20、 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, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, S

21、weden, Switzerland, Turkey and the United Kingdom. BS EN 13523-12:2017EN 13523-12:2017 (E) 5 1 Scope This part 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 w

22、ith some aluminium alloys and thin gauge steel substrate below 0,4 mm, that rather than scratching, the needle 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

23、 due to the soft nature of the coating and/or the potential for the needle to snag. The method is not applicable 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 dat

24、ed references, only the edition cited applies. For undated references, the latest edition of the referenced document (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 - Temperat

25、ures and humidities for conditioning and testing (ISO 3270) 3 Terms and definitions For the purposes of this 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 spec

26、ified load is placed. 5 Apparatus 5.1 Scratch apparatus (see EN ISO 1518-1). The apparatus is shown in Figure 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 l

27、ow voltage electrical meter to detect electrical contact. Other arrangements which give a similar performance may be used. BS EN 13523-12:2017EN 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 cou

28、nterweight 5 electrical connection with indicator for detecting scratch penetration to a metallic substrate 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

29、 tungsten carbide, the latter giving a longer serviceable life. In the case of a needle with a tip of hardened 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 te

30、st panel to be tested shall be flat and typically 75 mm 150 mm, although size may vary depending on the apparatus. BS EN 13523-12:2017EN 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 measure

31、ments, as required for instance in case of dispute, the temperature shall be (23 2) C or any other 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 t

32、est panel onto the sliding table, using the screw clamps on the apparatus, the long edge being in the 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 debri

33、s is removed. This should be carried out prior to every scratch. Adjust the position of the counterweight 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 leng

34、th of the travel shall be 50 mm. The penetration of the coating will be indicated by the detection 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

35、load at different positions on the test panel. This procedure can be repeated after increasing the 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 s

36、hall be expressed either by a pass or fail with a specified load or by the load just prior to penetration, 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 in

37、formation: a) all details necessary to identify the product tested; b) a reference to this part of 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 Claus

38、e 9; f) any deviation from the test method specified; g) the date of the test. BS EN 13523-12:2017EN 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

39、) 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) This page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-rel

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