1、Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 27 January 2005, Uncontrolled Copy, (c) BSIBRITISH STANDARD BS EN 13523-12:2004 Coil coated metals Test methods Part 12: Resistance to scratching The European Standard EN 13523-12:2004 has the status of a British Standard ICS
2、25.220.60 Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 27 January 2005, Uncontrolled Copy, (c) BSIBS EN 13523-12:2004 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 25 November 2004 BSI 25 November 2004 ISBN 0 58
3、0 44870 3 National foreword This British Standard is the official English language version of EN 13523-12:2004. The UK participation in its preparation was entrusted to Technical Committee STI/27, Paint systems for metallic substrates, which has the responsibility to: A list of organizations represe
4、nted on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”,
5、or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer i
6、mmunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate t
7、hem in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 7 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments
8、Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 27 January 2005, Uncontrolled Copy, (c) BSIEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN1352312 November2004 ICS25.220.60 Englishversion CoilcoatedmetalsTestmethodsPart12:Resistanceto scratching TlesprlaquesMthodesdessaisP
9、artie12: Rsistancelarayure BandbeschichteteMetallePrfverfahrenTeil12: WiderstandgegenRitzen ThisEuropeanStandardwasapprovedbyCENon23September2004. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwith
10、outanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityof
11、aCENmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthesamestatusast heofficial versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France, Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherla
12、nds,Norway,Poland,Portugal, Slovakia, Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2004CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwidef
13、orCENnationalMembers. Ref.No.EN1352312:2004:E Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 27 January 2005, Uncontrolled Copy, (c) BSIEN 13523-12:2004 (E) 2 Foreword This document (EN 13523-12:2004) has been prepared by Technical Committee CEN/TC 139 “Paints and varnishe
14、s”, 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 May 2005, and conflicting national standards shall be withdrawn at the latest by May 2005. According to
15、 the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Lux
16、embourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 27 January 2005, Uncontrolled Copy, (c) BSIEN 13523-12:2004 (E) 3 1 Scope This part of EN 13523 describe
17、s 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 needle will deform the substrate. Unde
18、r 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 applicable to conductive coatings. 2 Norm
19、ative 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 13523-0:2001, Coil coated met
20、als Test methods Part 0: General introduction and list of test methods. EN 23270, Paints and varnishes and their raw materials Temperatures and humidities for conditioning and testing (ISO 3270:1984). EN ISO 1518, Paints and varnishes Scratch test (ISO 1518:1992). 3 Terms and definitions For the pur
21、poses of this document, the terms and definitions given in EN 13523-0:2001 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. Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Ce
22、ntre, 27 January 2005, Uncontrolled Copy, (c) BSIEN 13523-12:2004 (E) 4 5 Apparatus 5.1 Scratch apparatus (see EN ISO 1518). 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
23、 constant speed motor to drive the table and a low voltage electrical meter to detect electrical contact. Other arrangements which give a similar performance may be used. 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
24、 4 Counterweight 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 st
25、eel or tungsten carbide, the latter giving a longer serviceable life. NOTE 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 See 13523-0. Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 27
26、 January 2005, Uncontrolled Copy, (c) BSIEN 13523-12:2004 (E) 5 7 Test panels See 13523-0. The test panel to be tested shall be flat and typically 75 mm 150 mm, although size may vary depending on the apparatus. 8 Procedure 8.1 Test conditions Measure the resistance to scratching of the organic coat
27、ing 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 temperature agreed upon and the relative humidity shall be (50 5) %, in accordance with EN 23270. 8.2 Determination Clamp the test panel onto the sli
28、ding 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 debris is removed. This sho
29、uld 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 spindle. Put the apparatus into the scratch mode and start the test. The minimum length of the travel shal
30、l 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 load at different pos
31、itions on the test panel. This procedure can be repeated after increasing the load until penetration of the coating to the metallic substrate takes place. NOTE It is essential that the movement is smooth with no heavy downward or lateral movement. 9 Expression of results The result shall be expresse
32、d 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. Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 27 January 2
33、005, Uncontrolled Copy, (c) BSIEN 13523-12:2004 (E) 6 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 EN 13523 (EN 13523-12); c) the temperature at which the test was carried out;
34、 d) the result of the test, as indicated in clause 9; e) any deviation from the test method specified; f) the date of the test. Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 27 January 2005, Uncontrolled Copy, (c) BSIEN 13523-12:2004 (E) 7 Bibliography EN 1396, Aluminium
35、and aluminium alloys Coil coated sheet and strip for general applications Specifications. EN 10169-1, Continuously organic coated (coil coated) steel flat products Part 1: General information (definitions, materials, tolerances, test methods). ENV 10169-2, Continuously organic coated (coil coated) s
36、teel flat products Part 2: Products for building exterior applications. EN 10169-3, Continuously organic coated (coil coated) steel flat products Part 3: Products for building interior applications. Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 27 January 2005, Uncontroll
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