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Quality Requirements Edition 6.0 European Enamel Association
7.16. QUALITY REQUIREMENTS FOR PORCELAIN AND VITREOUS ENAMELLED PROJECTION BOARDS
7.16.1 Application area
These requirements are applicable for enamelled projection boards of which the basic material consists of steel or laminated steel.
7.16.2 Test methods
Item Name Applicable standards
4.3 measurement of the thickness of the enamel coating EN ISO 2178, EN ISO 2360, EN ISO 1463
4.9 determination of the resistance to impact EN ISO 4532
4.10 determination of the adherence of the enamel to the substrate EN 10209 Annex C
4.17 determination of gloss EN ISO 2813, ASTM C246
4.26 determination of abrasion resistance ASTM C501, EN ISO 6370-1and 6370-2
4.28 determination of the quality of steel for enamelling EN 10209 for cold rolled steel and see 4.28 recommendations for hot rolled steels, HSLA
steels and steel forgings for pressure applications
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