Page 55 - 20250602 EEA QM Edition 6.0

Quality Requirements Edition 6.0 European Enamel Association

7.14.3 Quality requirements

Test method Requirement Remarks Frequency
4.3 thickness enamel coating max. 0.40 mm not applicable if covered with several S4/AQL 6.5
colour layers in order to achieve special
decorative effects (when coil production, 1 x per 100 m )
2
4.4 cold citric acid class A when taking into production a sig.diff.
enamel recipe, but at least 1 x per year
4.9 impact resistance at 20 N no damage > 2 mm diameter after 24 hours when taking into production a sig.diff.
enamel recipe, but at least 1 x a year
4.10 adherence min. 3 on test sheets, conform to EN ISO 28764 in production 1 x a day

4.18 scratch resistance 7 N when taking into production a sig.diff.
min. 4 N for metallic finishes and silk-screened finishes enamel recipe (excluding colour oxides),
but at least 1 x a year
4.19 colour difference even and smooth surface, evaluated equal to the Colour difference possibly measured with In production 100%
appearance of an approved enamelled sample a spectrometer and tolerances previously
agreed by interested partners
4.26 abrasion resistance max. 0.1 gram conform to ASTM C 501 when taking into production a sig.diff.
sandpaper S33/1kg/1000 rotations enamel recipe (excluding colour oxides),
EN ISO 6370-1 and 6370-2 but at least 1 x a year

4.28 steel quality in accordance with norm EN 10209 is recommended: determination during design
DC01EK / DC04EK / DC04ED

© EEA2025 page 55