EESTI STANDARD EVS-EN ISO 28762:2010 Vitreous and porcelain enamels - Enamel coatings applied to steel for writing surfaces - Specification (ISO 28762:2010)
EESTI STANDARDI EESSÕNA Käesolev Eesti standard EVS-EN ISO 28762:2010 sisaldab Euroopa standardi EN ISO 28762:2010 ingliskeelset teksti. NATIONAL FOREWORD This Estonian standard EVS-EN ISO 28762:2010 consists of the English text of the European standard EN ISO 28762:2010. Standard on kinnitatud Eesti Standardikeskuse 31.12.2010 käskkirjaga ja jõustub sellekohase teate avaldamisel EVS Teatajas. This standard is ratified with the order of Estonian Centre for Standardisation dated 31.12.2010 and is endorsed with the notification published in the official bulletin of the Estonian national standardisation organisation. Euroopa standardimisorganisatsioonide poolt rahvuslikele liikmetele Euroopa standardi teksti kättesaadavaks tegemise kuupäev on 15.11.2010. Standard on kättesaadav Eesti standardiorganisatsioonist. Date of Availability of the European standard text 15.11.2010. The standard is available from Estonian standardisation organisation. ICS 25.220.50 Standardite reprodutseerimis- ja levitamisõigus kuulub Eesti Standardikeskusele Andmete paljundamine, taastekitamine, kopeerimine, salvestamine elektroonilisse süsteemi või edastamine ükskõik millises vormis või millisel teel on keelatud ilma Eesti Standardikeskuse poolt antud kirjaliku loata. Kui Teil on küsimusi standardite autorikaitse kohta, palun võtke ühendust Eesti Standardikeskusega: Aru 10 Tallinn 10317 Eesti; www.evs.ee; Telefon: 605 5050; E-post: info@evs.ee
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN ISO 28762 November 2010 ICS 25.220.50 Supersedes EN 14864:2005+A1:2007 English Version Vitreous and porcelain enamels - Enamel coatings applied to steel for writing surfaces - Specification (ISO 28762:2010) Émaux vitrifiés - Revêtements en émail appliqués sur l'acier de surfaces d'écriture - Spécification (ISO 28762:2010) Emails und Emaillierungen - Email-Schichten auf Stahl für Schreibtafeln - Anforderungen (ISO 28762:2010) This European Standard was approved by CEN on 14 November 2010. 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 national 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 language 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR 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 national Members. Ref. No. EN ISO 28762:2010: E
EVS-EN ISO 28762:2010 EN ISO 28762:2010 (E) Foreword This document (EN ISO 28762:2010) has been prepared by Technical Committee ISO/TC 107 "Metallic and other inorganic coatings" in collaboration with Technical Committee CEN/TC 262 Metallic and other inorganic 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 May 2011, and conflicting national standards shall be withdrawn at the latest by May 2011. 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 14864:2005+A1:2007. According to the CEN/CENELEC Internal 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 28762:2010 has been approved by CEN as a EN ISO 28762:2010 without any modification. 3
INTERNATIONAL STANDARD EVS-EN ISO 28762:2010 ISO 28762:2010(E) Vitreous and porcelain enamels Enamel coatings applied to steel for writing surfaces Specification WARNING This International Standard calls for the use of substances and/or procedures that may be injurious to health if adequate safety measures are not taken. This International Standard does not address any health hazards, safety or environmental matters associated with its use. It is the responsibility of the user of this International Standard to establish appropriate health, safety and environmentally acceptable practices and take suitable actions for any national and international regulations. Compliance with this International Standard does not in itself confer immunity from legal obligations. 1 Scope This International Standard specifies the requirements for the functional and aesthetic characteristics of vitreous and porcelain enamel coatings applied to plain steel, for use as writing surfaces (whiteboards and chalkboards). 2 Normative 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. ISO 2178, Non-magnetic coatings on magnetic substrates Measurement of coating thickness Magnetic method ISO 2813, Paints and varnishes Determination of specular gloss of non-metallic paint films at 20, 60 and 85 ISO 2813:1994/Cor.1:1997, Paints and varnishes Determination of specular gloss of non-metallic paint films at 20, 60 and 85. Technical Corrigendum 1:1997 ISO 4532, Vitreous and porcelain enamels Determination of the resistance of enamelled articles to impact Pistol test ISO 7724-1, Paints and varnishes Colorimetry Part 1: Principles ISO 7724-2, Paints and varnishes Colorimetry Part 2: Colour measurement ISO 7724-3, Paints and varnishes Colorimetry Part 3: Calculation of colour differences ISO 15695, Vitreous and porcelain enamels Determination of scratch resistance of enamel finishes ISO 15695:2000/Cor.1:2000, Vitreous and porcelain enamels Determination of scratch resistance of enamel finishes. Technical Corrigendum 1:2000 ISO 28706-1:2008, Vitreous and porcelain enamels Determination of resistance to chemical corrosion Part 1: Determination of resistance to chemical corrosion by acids at room temperature ISO 2010 All rights reserved 1
EVS-EN ISO 28762:2010(E) ISO 28762:2010 EN 10209:1996, Cold rolled low carbon steel flat products for vitreous enamelling Technical delivery conditions EN 15771, Vitreous and porcelain enamels Determination of surface scratch hardness according to the Mohs scale ASTM C501, Standard Test Method for Relative Resistance to Wear of Unglazed Ceramic Tile by the Taber Abraser 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 vitreous enamel porcelain enamel substantially vitreous, or glassy, inorganic coating bonded to metal by fusion at a temperature above 500 C NOTE 1 This coating can be applied for protective, functional and/or decorative purposes. NOTE 2 Vitreous enamel is produced by the application of powdered inorganic glass, dry or suspended in water, on to the metal surface, and its subsequent fusion bonding. The fused coating exhibits a cubic thermal expansion of between 150 10 7 /K and 450 10 7 /K in the temperature range 20 C to 100 C, the actual value varying specifically with the type of substrate and the field of application. 3.2 vitreous- or porcelain-enamel writing surface facing material or component of a chalkboard or whiteboard NOTE Writing boards can have vitreous- or porcelain-enamelled sheets laminated to any of a variety of substrates, and perhaps framed, or can be made from fabricated vitreous- or porcelain-enamelled panels. 4 Steel substrate requirements The steel for enamelling shall conform to the requirements of EN 10209. The interested parties shall determine by mutual agreement the required thickness of the steel. The steel shall be free from all defects that may affect the appearance of the surface finish. 5 Final thickness of fired enamel When determined in accordance with ISO 2178, the thickness of the enamel on the outer face of the product shall be 250 µm maximum for whiteboards and 200 µm maximum for chalkboards. 6 Functional characteristics of the coating 6.1 Adherence test The adherence of the enamelled coating shall be determined in accordance with EN 10209:1996, Annex D. For steel thicknesses of less than 0,6 mm, a drop height of 300 mm shall be used. The adherence of the enamel shall be at least level 3, as defined in EN 10209:1996, Annex D. 2 ISO 2010 All rights reserved